Micom P631 Technical Manual
MiCOM P631
Transformer Differential Protection Device
P631/EN M/R-11-C
Version P631 -310 -409/410 -650
Technical Manual
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Warning!
When electrical equipment is in operation dangerous voltage will be present in
⚫
certain parts of the equipment. Failure to observe warning notices, incorrect
use or improper use may endanger personnel and equipment and cause
personal injury or physical damage.
Before working in the terminal strip area, the P631 must be isolated. Where
stranded conductors are used, insulated crimped wire end ferrules must be
employed.
The signals MAIN: Blocked/faulty and SFMON: Warning (LED)
(permanently assigned to the LEDs labeled OUT OF SERVICE and ALARM) can
be assigned to output relays to indicate the health of the P631. Schneider
Electric strongly recommends that these output relays are hardwired into the
substation's automation system, for alarm purposes.
Any modifications to this P631 must be in accordance with the manual. If any
other modification is made without the express permission of Schneider
Electric, it will invalidate the warranty, and may render the product unsafe.
Proper and safe operation of this P631 depends on appropriate shipping and
handling, proper storage, installation and commissioning, and on careful
operation, maintenance and servicing.
For this reason only qualified personnel may work on or operate this P631.
The User should be familiar with the warnings in the Safety Guide
(SFTY/4LM/J11 or later version), with the warnings in Chapter 5, (p. 5-1),
Chapter 10, (p. 10-1), Chapter 11, (p. 11-1) and Chapter 12, (p. 12-1)
and with the content of Chapter 14, (p. 14-1), before working on the
equipment. If the warnings are disregarded, it will invalidate the warranty, and
may render the product unsafe.
Installation of the DHMI:
A protective conductor (ground/earth) of at least 1.5 mm² (US: AWG14 or
thicker) must be connected to the DHMI protective conductor terminal to link
the DHMI and the main relay case; these must be located within the same
substation.
To avoid the risk of electric shock the DHMI communication cable must not be
in contact with hazardous live parts.
The DHMI communication cable must not be routed or placed alongside highvoltage cables or connections. Currents can be induced in the cable which
may result in electromagnetic interference.
Qualified Personnel
are individuals who
are familiar with the installation, commissioning and operation of the P631
●
and of the system to which it is being connected;
are able to perform switching operations in accordance with safety
●
engineering standards and are authorized to energize and de-energize
equipment and to isolate, ground and label it;
are trained in the care and use of safety apparatus in accordance with
●
safety engineering standards;
are trained in emergency procedures (first aid).
●
Note
This operating manual gives instructions for installation, commissioning and
operation of the P631. However, the manual cannot cover all conceivable
circumstances or include detailed information on all topics. In the event of
questions or specific problems, do not take any action without proper
authorization. Contact the appropriate technical sales office of Schneider Electric
and request the necessary information.
Any agreements, commitments, and legal relationships and any obligations on
the part of Schneider Electric, including settlement of warranties, result solely
from the applicable purchase contract, which is not affected by the contents of
the operating manual.
Changes after going to press
P631
TABLE OF CONTENTS
1 APPLICATION AND SCOPE ................................................................................... 1-1
1.1 Overview - P631 ..........................................................................................................1-1
1.2 Including Function Groups in the Configuration ..........................................................1-3
1.3 Overview of Function Groups - Part 1 ......................................................................... 1-4
1.4 Overview of Function Groups - Part 2 ......................................................................... 1-6
1.5 Design .........................................................................................................................1-8
1.6 Configurable Function Keys ........................................................................................ 1-9
1.7 Inputs and Outputs ................................................................................................... 1-10
1.8 Control and Display ...................................................................................................1-11
1.9 Information Interfaces ...............................................................................................1-12
2 TECHNICAL DATA ................................................................................................2-1
2.1 Conformity ..................................................................................................................2-1
2.2 General Data ...............................................................................................................2-2
2.2.1 General Device Data ..................................................................................................................................... 2-2
2.3 Tests ...........................................................................................................................2-4
2.3.1 Type Tests .....................................................................................................................................................2-4
2.3.2 Routine Tests .................................................................................................................................................2-7
2.4 Environmental Conditions ...........................................................................................2-9
2.5 Inputs and Outputs ................................................................................................... 2-10
2.5.1 Current Measuring Inputs ............................................................................................................................2-10
2.5.2 Binary Signal Inputs .....................................................................................................................................2-11
2.5.3 IRIG‑B Interface ........................................................................................................................................... 2-12
2.5.4 Direct Current Input .....................................................................................................................................2-12
2.5.5 Resistance Thermometer ............................................................................................................................ 2-12
2.5.6 Direct Current Output ..................................................................................................................................2-12
2.5.7 Output Relays ..............................................................................................................................................2-13
2.5.8 BCD Measured Data Output ........................................................................................................................ 2-13
2.6 Interfaces ..................................................................................................................2-14
2.6.1 Local Control Panel ......................................................................................................................................2-14
2.6.2 PC Interface .................................................................................................................................................2-14
2.6.3 Serial Communication Interface .................................................................................................................. 2-14
2.6.4 IEC Communication Interface ......................................................................................................................2-15
2.6.5 IRIG‑B Interface ........................................................................................................................................... 2-15
2.7 Information Output ................................................................................................... 2-16
2.8 Settings – Typical Characteristic Data .......................................................................2-17
2.8.1 Main Function ..............................................................................................................................................2-17
2.8.2 Differential Protection ..................................................................................................................................2-17
2.8.3 Definite-Time and Inverse-Time Overcurrent Protection ............................................................................. 2-17
2.9 Deviations .................................................................................................................2-18
2.9.1 Deviations of the Operate Values ................................................................................................................2-18
2.9.2 Deviations of the Timer Stages ................................................................................................................... 2-19
2.9.3 Deviations of Measured Data Acquisition ....................................................................................................2-20
2.10 Resolution of the Fault Data Acquisition ...................................................................2-21
2.10.1 Time Resolution ...........................................................................................................................................2-21
2.10.2 Currents .......................................................................................................................................................2-21
2.10.3 Voltage ........................................................................................................................................................2-21
2.11 Recording Functions ................................................................................................. 2-22
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2.11.1 Organization of the Recording Memories .................................................................................................... 2-22
Table of Contents
2.12 Power Supply ............................................................................................................ 2-24
2.13 Current Transformer Specifications .......................................................................... 2-25
2.13.1 Symbols .......................................................................................................................................................2-25
2.13.2 General Equations .......................................................................................................................................2-26
2.13.3 Transformer Differential Protection .............................................................................................................2-27
3 OPERATION .........................................................................................................3-1
3.1 Modular Structure .......................................................................................................3-1
3.2 Operator-Machine Communication ............................................................................. 3-3
3.3 Configuration of the Measured Value Panels (Function Group LOC) ........................... 3-4
3.3.1 Operation Panel .............................................................................................................................................3-5
3.3.2 Fault Panel .....................................................................................................................................................3-6
3.3.3 Overload Panel ..............................................................................................................................................3-7
3.3.4 Configurable Clear Key ..................................................................................................................................3-7
3.4 Serial Interfaces ..........................................................................................................3-8
3.4.1 PC Interface (Function Group PC) .................................................................................................................. 3-9
3.4.2 Communication Interface 1 (Function Group COMM1) ................................................................................ 3-10
3.4.3 Communication Interface 2 (Function Group COMM2) ................................................................................ 3-19
3.4.4 Communication Interface IEC 61850 (Function Groups IEC, GOOSE and GSSE) ..........................................3-21
3.5 IRIG-B Clock Synchronization (Function Group IRIGB) ...............................................3-33
3.6 Configurable Function Keys (Function Group F_KEY) ................................................ 3-34
3.7 Configuration and Operating Mode of the Binary Inputs (Function Group INP) .........3-36
3.8 Measured Data Input (Function Group MEASI) ..........................................................3-38
3.8.1 Direct Current Input on the Analog (I/O) Module Y ...................................................................................... 3-39
3.8.2 Input for Connection of a Resistance Thermometer .................................................................................... 3-42
3.9 Configuration, Operating Mode, and Blocking of the Output Relays (Function Group
OUTP) ........................................................................................................................3-44
3.10 Measured Data Output (Function Group MEASO) ......................................................3-47
3.10.1 General Settings ..........................................................................................................................................3-47
3.10.2 BCD Measured Data Output ........................................................................................................................ 3-49
3.10.3 Analog Measured Data Output .................................................................................................................... 3-52
3.10.4 Output of “External” Measured Data ...........................................................................................................3-58
3.11 Configuration and Operating Mode of the LED Indicators (Function Group LED) ...... 3-59
3.11.1 Configuring the LED Indicators ....................................................................................................................3-59
3.11.2 Layout of the LED Indicators ........................................................................................................................3-59
3.11.3 Operating Mode of the LED Indicators .........................................................................................................3-60
3.12 Main Functions of the P631 (Function Group MAIN) ..................................................3-62
3.12.1 Conditioning of the Measured Values ..........................................................................................................3-62
3.12.2 Phase Reversal Function ..............................................................................................................................3-65
3.12.3 Operating Data Measurement ..................................................................................................................... 3-67
3.12.4 Configuring and Enabling the Device Functions .......................................................................................... 3-74
3.12.5 Activation of “Dynamic Parameters” ...........................................................................................................3-76
3.12.6 Multiple Blocking ......................................................................................................................................... 3-77
3.12.7 Multiple Signaling of the Measuring Circuit Monitoring Function .................................................................3-78
3.12.8 Blocked/Faulty .............................................................................................................................................3-79
3.12.9 Starting Signals and Tripping Logic .............................................................................................................3-79
3.12.10 Time Tagging and Clock Synchronization ....................................................................................................3-82
3.12.11 Resetting Actions .........................................................................................................................................3-84
3.12.12 Assigning Communications Interfaces to Physical Communications Channels ............................................3-87
3.12.13 Test Mode ....................................................................................................................................................3-88
3.13 Parameter Subset Selection (Function Group PSS) ................................................... 3-89
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3.14 Self-Monitoring (Function Group SFMON) ..................................................................3-91
3.14.1 Tests During Start-up .................................................................................................................................. 3-91
3.14.2 Cyclic Tests ..................................................................................................................................................3-91
3.14.3 Signals .........................................................................................................................................................3-91
3.14.4 Device Response .........................................................................................................................................3-92
3.14.5 Monitoring Signal Memory ...........................................................................................................................3-93
3.14.6 Monitoring Signal Memory Time Tag ...........................................................................................................3-93
3.15 Operating Data Recording (Function Group OP_RC) ................................................. 3-94
3.16 Monitoring Signal Recording (Function Group MT_RC) ..............................................3-95
3.17 Overload Data Acquisition (Function Group OL_DA) ................................................. 3-96
3.17.1 Overload Duration .......................................................................................................................................3-96
3.17.2 Acquiring Measured Overload Data from the Thermal Overload Protection ................................................3-97
3.18 Overload Recording (Function Group OL_RC) ............................................................3-98
3.18.1 Start of Overload Recording ........................................................................................................................3-98
3.18.2 Counting Overload Events ...........................................................................................................................3-98
3.18.3 Time Tagging ...............................................................................................................................................3-98
3.18.4 Overload Logging ........................................................................................................................................ 3-99
3.19 Fault Data Acquisition (Function Group FT_DA) ...................................................... 3-100
3.19.1 Running Time and Fault Duration ..............................................................................................................3-100
3.19.2 Fault Data Acquisition Time .......................................................................................................................3-100
3.19.3 Acquisition of the Fault Currents ............................................................................................................... 3-102
3.19.4 Acquisition of the Differential and Restraining Currents ............................................................................3-102
3.19.5 Fault Data Reset ........................................................................................................................................3-103
3.20 Fault Recording (Function Group FT_RC) ................................................................ 3-104
3.20.1 Start of Fault Recording .............................................................................................................................3-104
3.20.2 Fault Counting ...........................................................................................................................................3-105
3.20.3 Time Tagging .............................................................................................................................................3-105
3.20.4 Fault Recordings ........................................................................................................................................3-106
3.20.5 Fault Value Recording ............................................................................................................................... 3-107
3.21 Differential Protection (Function Group DIFF) ......................................................... 3-109
3.21.1 Enabling or Disabling Differential Protection .............................................................................................3-109
3.21.2 Amplitude Matching ...................................................................................................................................3-110
3.21.3 Vector Group Matching ..............................................................................................................................3-113
3.21.4 Zero-sequence Current Filtering ................................................................................................................3-113
3.21.5 Tripping Characteristics .............................................................................................................................3-115
3.21.6 Rapid (high-set) Differential Protection ..................................................................................................... 3-117
3.21.7 Inrush Stabilization (Harmonic Restraint) ..................................................................................................3-118
3.21.8 Saturation Discriminator ............................................................................................................................3-119
3.21.9 Overfluxing Stabilization ........................................................................................................................... 3-120
3.21.10 Measured Operating Data of Differential Protection ..................................................................................3-121
3.22 Definite-Time Overcurrent Protection (Function Groups DTOC1 and DTOC2) .........3-123
3.22.1 Enabling or Disabling DTOC Protection ......................................................................................................3-123
3.22.2 Phase Current Stages ................................................................................................................................3-124
3.22.3 Negative-Sequence Current Stages ...........................................................................................................3-126
3.22.4 Residual Current Stages ............................................................................................................................3-127
3.22.5 General Starting ........................................................................................................................................3-129
3.22.6 Counters of the DTOC Protection Function ................................................................................................3-130
3.23 Inverse-time Overcurrent Protection (Function Groups IDMT1 and IDMT2) ............ 3-131
3.23.1 Enabling or Disabling IDMT Protection .......................................................................................................3-131
3.23.2 Time-Dependent Characteristics ............................................................................................................... 3-133
3.23.3 Phase Current Stage ..................................................................................................................................3-136
3.23.4 Negative-Sequence Current Stage ............................................................................................................ 3-138
3.23.5 Residual Current Stage ..............................................................................................................................3-140
3.23.6 Hold Time ..................................................................................................................................................3-142
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P631
3.23.7 General Starting ........................................................................................................................................3-144
3.23.8 Counters of the IDMT Protection Function .................................................................................................3-144
Table of Contents
3.24 Thermal Overload Protection (Function Group THRM1) .......................................... 3-145
3.24.1 Enabling or Disabling Thermal Overload Protection .................................................................................. 3-145
3.24.2 Readiness of Thermal Overload Protection ................................................................................................3-146
3.24.3 Tripping Characteristics .............................................................................................................................3-146
3.24.4 Coolant Temperature Acquisition .............................................................................................................. 3-147
3.24.5 Warning Signal .......................................................................................................................................... 3-148
3.25 Current Transformer Supervision (Function Group CTS) .........................................3-151
3.25.1 Hardware requirement .............................................................................................................................. 3-151
3.25.2 Enabling or Disabling the CTS Function .....................................................................................................3-151
3.25.3 Blocking CTS ..............................................................................................................................................3-151
3.25.4 Monitoring Condition ................................................................................................................................. 3-152
3.25.5 Signaling and Indication ............................................................................................................................3-153
3.25.6 Reset .........................................................................................................................................................3-154
3.25.7 Multiple Signaling from the CTS Function ..................................................................................................3-154
3.26 Measuring-Circuit Monitoring (Function Groups MCM_1 and MCM_2) ..................... 3-156
3.26.1 Enabling or Disabling Measuring-Circuit Monitoring ..................................................................................3-156
3.26.2 Measuring-Circuit Monitoring .....................................................................................................................3-156
3.26.3 Multiple Signaling from the Measuring-Circuit Monitoring Function .......................................................... 3-157
3.27 Circuit Breaker Failure Protection (Function Groups CBF_1 and CBF_2) ..................3-158
3.27.1 Assigning Transformer Ends ......................................................................................................................3-158
3.27.2 Assigning Circuit Breakers .........................................................................................................................3-158
3.27.3 Assigning the Trip Command .....................................................................................................................3-158
3.27.4 Enabling or Disabling the CBF Function .....................................................................................................3-158
3.27.5 Readiness of Circuit Breaker Protection .................................................................................................... 3-159
3.27.6 Detecting a CB Tripping .............................................................................................................................3-160
3.27.7 Current flow monitoring .............................................................................................................................3-160
3.27.8 Evaluation of CB Status Signals .................................................................................................................3-161
3.27.9 Startup Criteria ..........................................................................................................................................3-162
3.27.10 Trip Commands ......................................................................................................................................... 3-164
3.27.11 Starting Trigger ......................................................................................................................................... 3-164
3.27.12 Fault Behind CB Protection ........................................................................................................................3-165
3.27.13 CB Synchronization Supervision ................................................................................................................3-165
3.28 Limit Value Monitoring (Function Group LIMIT) .......................................................3-167
3.28.1 Enabling or Disabling the Limit Value Monitoring Function ....................................................................... 3-167
3.28.2 Monitoring the Linearized Measured DC Values ........................................................................................ 3-167
3.28.3 Monitoring the Measured Temperature Value ........................................................................................... 3-168
3.29 Limit Value Monitoring (Function Groups LIM_1 and LIM_2) ....................................3-170
3.29.1 Monitoring Minimum and Maximum Phase Currents ................................................................................. 3-170
3.30 Programmable Logic (Function Groups LOGIC and LOG_2) .....................................3-172
4 DESIGN ............................................................................................................... 4-1
4.1 Designs .......................................................................................................................4-2
4.2 Dimensional Drawings ................................................................................................ 4-4
4.2.1 Dimensional Drawings for the 40 TE Case .....................................................................................................4-4
4.2.2 Detachable HMI .............................................................................................................................................4-5
4.3 Hardware Modules ......................................................................................................4-7
5 INSTALLATION AND CONNECTION .......................................................................5-1
5.1 Unpacking and Packing ...............................................................................................5-2
5.2 Checking Nominal Data and Design Type ...................................................................5-3
5.3 Location Requirements ...............................................................................................5-4
4 P631/EN M/R-11-C // P631-310-650
Table of Contents
5.3.1 Environmental Conditions ..............................................................................................................................5-4
5.3.2 Mechanical Conditions ...................................................................................................................................5-4
5.3.3 Electrical Conditions for Auxiliary Voltage of the Power Supply .................................................................... 5-4
5.3.4 Electromagnetic Conditions ...........................................................................................................................5-4
P631
5.4 Installation ..................................................................................................................5-5
5.5 Protective and Operational Grounding ......................................................................5-11
5.6 Connection ................................................................................................................5-12
5.6.1 Connecting Measuring and Auxiliary Circuits .............................................................................................. 5-12
5.6.2 Connecting the IRIG‑B Interface .................................................................................................................. 5-14
5.6.3 Connecting the Serial Interfaces ................................................................................................................. 5-14
5.7 Location and Connection Diagrams .......................................................................... 5-18
5.7.1 Location Diagrams P631‑409/410 ................................................................................................................5-18
5.7.2 Terminal Connection Diagrams P631‑409/410 ............................................................................................ 5-18
6 LOCAL CONTROL (HMI) ....................................................................................... 6-1
6.1 Local Control Panel (HMI) ............................................................................................6-1
6.2 Display and Keypad .................................................................................................... 6-2
6.2.1 Text Display ...................................................................................................................................................6-2
6.2.2 Display Illumination .......................................................................................................................................6-2
6.2.3 Contrast of the Display ..................................................................................................................................6-2
6.2.4 Short Description of Keys .............................................................................................................................. 6-3
6.3 Display Levels .............................................................................................................6-5
6.4 Display Panels .............................................................................................................6-6
6.5 Menu Tree and Data Points .........................................................................................6-7
6.6 List Data Points ...........................................................................................................6-8
6.7 Note Concerning the Step-by-Step Descriptions .........................................................6-9
6.8 Configurable Function Keys ...................................................................................... 6-10
6.8.1 Configuration of the Function Keys F1 to Fx ................................................................................................6-11
6.9 Changing Between Display Levels ............................................................................ 6-14
6.10 Control at Panel Level ...............................................................................................6-15
6.11 Control at the Menu Tree Level .................................................................................6-16
6.11.1 Navigation in the Menu Tree ....................................................................................................................... 6-16
6.11.2 Switching Between Address Mode and Plain Text Mode ..............................................................................6-17
6.11.3 Change-Enabling Function ...........................................................................................................................6-18
6.11.4 Changing Parameters ..................................................................................................................................6-21
6.11.5 List Parameters ........................................................................................................................................... 6-22
6.11.6 Memory Readout .........................................................................................................................................6-25
6.11.7 Resetting .....................................................................................................................................................6-28
6.11.8 Password-Protected Control Actions ............................................................................................................6-29
6.11.9 Changing the Password ...............................................................................................................................6-31
7 SETTINGS ............................................................................................................7-1
7.1 Parameters .............................................................................................................. 7-1
7.1.1 Device Identification ............................................................................................................................. 7-3
7.1.2 Configuration Parameters .................................................................................................................. 7-11
7.1.3 Function Parameters ............................................................................................................................7-71
8 INFORMATION AND CONTROL FUNCTIONS ......................................................... 8-1
8.1 Operation ................................................................................................................. 8-1
8.1.1 Cyclic Values ............................................................................................................................................ 8-2
8.1.2 Control and Testing ..............................................................................................................................8-82
8.1.3 Operating Data Recording ..................................................................................................................8-92
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Table of Contents
8.2 Events .....................................................................................................................8-93
8.2.1 Event Counters ...................................................................................................................................... 8-93
8.2.2 Measured Event Data ...........................................................................................................................8-96
8.2.3 Event Recording .................................................................................................................................... 8-99
9 IEC 61850 SETTINGS VIA IED CONFIGURATOR ....................................................9-1
9.1 Manage IED .................................................................................................................9-2
9.2 IED Details .................................................................................................................. 9-3
9.3 Communications .........................................................................................................9-4
9.4 SNTP ........................................................................................................................... 9-5
9.4.1 General Config ...............................................................................................................................................9-5
9.4.2 External Server 1 ...........................................................................................................................................9-5
9.4.3 External Server 2 ...........................................................................................................................................9-5
9.5 Dataset Definitions ..................................................................................................... 9-6
9.6 GOOSE Publishing .......................................................................................................9-7
9.6.1 System/LLN0 ................................................................................................................................................. 9-7
9.7 GOOSE Subscribing .....................................................................................................9-9
9.7.1 Mapped Inputs ...............................................................................................................................................9-9
9.8 Report Control Blocks ............................................................................................... 9-12
9.8.1 System/LLN0 ............................................................................................................................................... 9-12
9.9 Controls .....................................................................................................................9-13
9.9.1 Control Objects ............................................................................................................................................9-13
9.9.2 Uniqueness of Control ................................................................................................................................. 9-13
9.10 Measurements .......................................................................................................... 9-15
9.11 Configurable Data Attributes .................................................................................... 9-16
9.11.1 System/LLN0 ............................................................................................................................................... 9-16
10 COMMISSIONING ...............................................................................................10-1
10.1 Safety Instructions ....................................................................................................10-1
10.2 Commissioning Tests ................................................................................................10-3
10.2.1 Preparation ..................................................................................................................................................10-3
10.2.2 Testing .........................................................................................................................................................10-5
10.2.3 Checking the Binary Signal Inputs ...............................................................................................................10-5
10.2.4 Checking the Output Relays ........................................................................................................................10-5
10.2.5 Checking the Protection Function ................................................................................................................10-5
10.2.6 Completing Commissioning .........................................................................................................................10-9
11 TROUBLESHOOTING ..........................................................................................11-1
12 MAINTENANCE .................................................................................................. 12-1
12.1 Maintenance Procedures in the Power Supply Area ..................................................12-2
12.2 Routine Functional Testing ....................................................................................... 12-3
12.3 Analog Input Circuits .................................................................................................12-4
12.4 Binary Opto Inputs ....................................................................................................12-5
12.5 Binary Outputs ..........................................................................................................12-6
12.6 Serial Interfaces ........................................................................................................12-7
13 STORAGE .......................................................................................................... 13-1
14 ACCESSORIES AND SPARE PARTS .....................................................................14-1
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Table of Contents
P631
15 ORDER INFORMATION .......................................................................................15-1
A1 FUNCTION GROUPS ...........................................................................................A1-1
A2 INTERNAL SIGNALS ...........................................................................................A2-1
A3 GLOSSARY ........................................................................................................A3-1
Modules ......................................................................................................................................A3-1
Symbols ......................................................................................................................................A3-1
Examples of Signal Names ......................................................................................................... A3-7
Symbols Used .............................................................................................................................A3-8
A4 TELECONTROL INTERFACES ..............................................................................A4-1
A4.1 Telecontrol Interface per EN 60870-5-101 or IEC 870-5-101 (Companion Standard)
.................................................................................................................................. A4-1
A4.1.1 Interoperability ............................................................................................................................................A4-1
A4.2 Communication Interface per IEC 60870-5-103 ........................................................A4-9
A4.2.1 Interoperability ............................................................................................................................................A4-9
A5 P631 VERSION HISTORY ................................................................................... A5-1
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Table of Contents
8 P631/EN M/R-11-C // P631-310-650
1 APPLICATION AND SCOPE
1.1 Overview - P631
The P631 differential protection device is intended for the fast and selective
short-circuit protection of transformers, motors, generators and other
installations with 2 windings.
P631
Fig. 1-1: P631 in 40 TE case.
The P631 provides high-speed three-system differential protection using a tripleslope characteristic and two high-set differential elements in combination with
transformer inrush restraint, overfluxing restraint and through-stabilization.
Amplitude and vector group matching is done just by entering the nominal values
of transformer windings and associated current transformers. An (optional)
overreaching current measuring circuit monitoring function will prevent
unwanted tripping by differential protection for faults in the CT's secondary
circuit.
Phase swapping allows motor / generator protection applications with enlarged
protection zones.
In addition many supplementary protective functions are incorporated in the
devices. These can be individually configured and cancelled.
The relevant protection parameters can be stored in four independent parameter
subsets in order to adapt the protection device to different operating and power
system management conditions.
During operation, the user-friendly interface makes it easy to set the device
parameters and allows safe operation of the substation by preventing nonpermissible switching operations.
These features give the user the means to adapt the P631 to the protection and
control capacity required in a specific application.
The powerful programmable logic provided by the protection device also makes
it possible to accommodate special applications.
P631/EN M/R-11-C // P631-310-650 1-1
I
Y,b
I
Y,a
I
P,a
I
P,b
87
DIFF
49
THRM1
51
IDMT1
51
IDMT2
50
DTOC2
Metering
LIM_1
Overload rec.
Self Monitoring
LIM_2
Fault rec.
Communication
to SCADA / substation control / RTU / modem ...
via RS485 or Fiber optics
using IEC 60870-5-101, -103, Modbus, DNP3, Courier
resp.
via RJ45 or Fiber optics using IEC 61850
16S
COMM1
16S
COMM2
16E
IEC
CLK
IRIGB
CMD_1SIG_1
26
MEASI MEASO
Transformer Differential Protection
P631
Always availableOptional
LIMIT
50
DTOC1
50/62BF
CBF_2
50/62BF
CBF_1
MCM_2MCM_1
CTS
Recording and
Data Acquisition
LGC
LOGIC / LOG2
P631
1 Application and Scope
Fig. 1-2: Function diagram
For a list of all available function groups see the Appendix.
1-2 P631/EN M/R-11-C // P631-310-650
1 Application and Scope
1.2 Including Function Groups in the Configuration
Functions listed in the tables in Section 1.3, (p. 1-4) are self-contained
function groups and can be individually configured or de-configured according to
the specific application requirements by using the MiCOM S1 operating program.
Unused or cancelled function groups are hidden to the user, thus simplifying the
menu of the MiCOM S1.
This concept provides a large choice of functions and makes wide-ranging
application of the protection device possible, with just one model version. On the
other hand, simple and clear parameter settings can be made.
In this way the protection and control functions can be included in or excluded
from the configuration.
Example
For example, the current transformer supervision (function group CTS)
can be included in the configuration by setting
●
CTS: Function group CTS to With
can be excluded from the configuration by setting
●
CTS: Function group CTS to Without
P631
P631/EN M/R-11-C // P631-310-650 1-3
P631
1 Application and Scope
1.3 Overview of Function Groups - Part 1
The following tables list the function groups that can be included in or excluded
from the configuration of the P631.
✓ = Standard; (✓) = Ordering option.
Protection functions
P631ANSI IEC 61850 Function group
Abbrev. Description
87T PhsPDIF1 DIFF Differential protection, phase selective 2 wind.
50TD
P/ Q/ N
51 P/
Q/ N
49 ThmPTTR1 THRM1 Thermal overload protection 1
50 BF RBRFx CBF_x Circuit breaker failure protection 2
30/ 74 AlmGGIO1 MCM_x Measuring-circuit monitoring 2
LGC PloGGIOx LOGIC /
PHAR1 Inrush stabilization (functionality that is part of the
DIFF function group)
DtpPhs- /
DtpEft- /
DtpNgsPTCO
x
ItpPhs- /
ItpEft- /
ItpNgsPTCOx
DTOCx Definite-time overcurrent protection, 3 stages,
phase-, negative-sequence-, residual/starpointovercurrent
IDMTx Inverse-time overcurrent protection, one stage,
phase-, negative-sequence-, residual/starpointovercurrent
CTS Current transformer supervision 1
LIMIT
LIM_x
LOG_2
Limit value monitoring 2
Programmable logic ✓
✓
2
2
1-4 P631/EN M/R-11-C // P631-310-650
1 Application and Scope
Communication functions
Abbrev. Description
P631
P631ANSI IEC 61850 Function group
16S
CLK
16E
COMM1,
COMM2
2 communication interfaces serial, RS 422 / 485 or
fiber optic
(✓)
IRIGB Time synchronization IRIG-B (✓)
IEC Communication interface Ethernet (✓)
16E GosGGIOx GOOSE IEC 61850 (✓)
Measured value functions
P631ANSI IEC 61850 Function group
Abbrev. Description
26 RtdGGIO1
IdcGGIO1
MEASI
MEASO
Analog inputs and outputs
RTD input
●
1× Measuring data input 20 mA
●
2× Measuring data output 20 mA
●
(✓)
(✓)
(✓)
(✓)
P631/EN M/R-11-C // P631-310-650 1-5
P631
1.4 Overview of Function Groups - Part 2
The following tables list the function groups that are generally available for the
P631, and which cannot be excluded from the configuration.
✓ = Standard; (✓) = Ordering option.
Inputs and outputs
Abbrev. Description
1 Application and Scope
P631ANSI IEC 61850 Function group
Measuring inputs
Phase currents
●
INP
●
INP
●
OUTP
●
Binary inputs and outputs
Optical coupler inputs
●
Add. optical coupler inputs
●
Output relays
●
2×3
●
4 … 10
●
24
●
8 … 22
●
1-6 P631/EN M/R-11-C // P631-310-650
1 Application and Scope
General functions
Abbrev. Description
P631
P631ANSI IEC 61850 Function group
DVICE Device ✓
LOC Local control panel ✓
PC PC link ✓
F_KEY 6 configurable function keys ✓
LED LED indicators ✓
MAIN Main function ✓
LLN0.SGCB PSS Parameter subset selection ✓
SFMON Comprehensive self-monitoring ✓
OP_RC Operating data recording (time-tagged event
logging)
MT_RC Monitoring Signal Recording ✓
OL_DA Overload Data Acquisition ✓
OL_RC Overload recording (time-tagged event logging) ✓
✓
PTRCx /
RDRE1
FT_DA Fault data acquisition for a particular, settable point
in time during a fault
FT_RC Fault recording (time-tagged event logging together
with fault value recording of the three phase
currents, the residual current as well as the three
phase-to-ground voltages and the neutral-point
displacement voltage)
✓
✓
P631/EN M/R-11-C // P631-310-650 1-7
P631
1.5 Design
The P631 is modular in design. The plug-in modules are housed in a robust
aluminum case and electrically interconnected via one analog p/c board and one
digital p/c board.
1 Application and Scope
1-8 P631/EN M/R-11-C // P631-310-650
1 Application and Scope
1.6 Configurable Function Keys
To the right of the text display, there are six freely configurable function keys
available. These may be used for easy control operation access.
P631
P631/EN M/R-11-C // P631-310-650 1-9
P631
1.7 Inputs and Outputs
The nominal current and voltage values of the measuring inputs on the P631 can
be set with the function parameters.
The nominal voltage range of the optical coupler inputs is 24 to 250 V DC. As an
option binary signal input modules with a higher operate threshold are available.
The auxiliary voltage input for the power supply is also designed for an extended
range. The nominal voltage ranges are 60 to 250 V DC and 100 to 230 V AC. A 24
to 60 V DC version is also available.
All output relays can be utilized for signaling and command purposes.
The optional PT 100 input is lead-compensated, balanced and linearized for
PT 100 resistance thermometers as per IEC 751 / DIN EN 60751.
The optional 0 to 20 mA input provides open-circuit and overload monitoring,
zero suppression defined by a setting, plus the option of linearizing the input
variable via 20 adjustable interpolation points.
Two selectable measured values (cyclically updated measured operating data
and stored measured fault data) can be output as a burden-independent direct
current via the two optional 0 to 20 mA outputs. The characteristics are defined
via 3 adjustable interpolation points allowing a minimum output current (4 mA,
for example) for slave-side open-circuit monitoring, knee-point definition for fine
scaling, and a limitation to lower nominal currents (10 mA, for example). Where
sufficient output relays are available, a selectable measured value can be output
in BCD-coded form by contacts.
1 Application and Scope
1-10 P631/EN M/R-11-C // P631-310-650
1 Application and Scope
1.8 Control and Display
Local control panel with an LC display containing 4 × 20 alphanumeric
●
characters.
23 LED indicators, 18 of which allow freely configurable function
●
assignment for the colors red and green. Furthermore there are various
operating modes and flashing functions available.
PC interface.
●
One or two communication interface(s) for connection to a substation
●
control system (optional).
P631
P631/EN M/R-11-C // P631-310-650 1-11
P631
1.9 Information Interfaces
Information is exchanged through the local control panel, the PC interface, or two
optional communication interfaces (channel 1 and channel 2).
Using the first channel of the communication interfaces (COMM1), the P631 can
be wired either to the substation control system or to a telecontrol system. This
channel is optionally available with a switchable protocol (per IEC 60870‑5‑103,
IEC 870‑5‑101, DNP 3.0, MODBUS or Courier).
The second communication interface (COMM2, communication protocol per
IEC 60870‑5‑103 only) is designed for remote control.
As an order option, there is an Ethernet interface for communication per
IEC 61850 available instead of channel 1.
External clock synchronization can be accomplished via one of the
communication protocols or by using the optional IRIG‑B input.
1 Application and Scope
1-12 P631/EN M/R-11-C // P631-310-650
2 TECHNICAL DATA
2.1 Conformity
Notice
Applicable to P631, version -310 -409/410 -650.
Declaration of Conformity
The product designated “P631 Transformer Differential Protection Device” has
been designed and manufactured in conformance with the European standards
EN 60255‑26 and EN 60255‑27 and with the “EMC Directive” and the “Low
Voltage Directive” issued by the Council of the European Community.
P631
P631/EN M/R-11-C // P631-310-650 2-1
P631
2.2 General Data
2.2.1 General Device Data
Design
Surface-mounted case suitable for wall installation, or
●
Flush-mounted case for 19″ cabinets and for control panels.
●
Installation Position
Vertical ± 30°.
●
Degree of Protection
Per DIN VDE 0470 and EN 60529 or IEC 529.
IP 52 for the front panel.
●
Flush-mounted case:
●
■
IP 50 for the case (excluding the rear connection area)
■
IP 20 for the rear connection area, pin-terminal connection
■
IP 10 for the rear connection area, ring-terminal connection
2 Technical Data
Surface-mounted case:
●
■
■
Weight
Approx. 7 kg
●
Dimensions and Connections
See dimensional drawings (Section 4.2, (p. 4-4)), and the location and
terminal connection diagrams (Section 5.7, (p. 5-18)).
Terminals
PC interface (X6)
EIA RS232 (DIN 41652) connector, type D-Sub, 9-pin
●
Communication interfaces COMM1, COMM2
Fiber (X7, X8)
●
■
■
IP 50 for the case
IP 50 for the fully enclosed connection area with the supplied rubber
grommets fitted
F-SMA optical fiber connection per IEC 60874‑2 (for plastic fibers), or
optical fiber connection BFOC-ST® connector 2.5 per IEC 60874‑10‑1 (for
glass fibers).
(ST® is a registered trademark of AT&T Lightguide Cable Connectors.)
Wire leads (X9, X10)
●
■
M2 threaded terminal ends for wire cross-sections up to 1.5 mm² (US:
AWG16).
IRIG-B Interface (X11)
●
■
BNC plug
2-2 P631/EN M/R-11-C // P631-310-650
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