DEIF AGC-4 MK II, AGC-4 Users guide

AGC-4 MK II, AGC-4

Option D1

Voltage, var, or cos phi regulation

DEIF A/S · Frisenborgvej 33 · DK-7800 Skive

Tel.: [phone] · Fax: [phone]

[e-mail] · www.deif.com Document no.: 4189341263B

1. Description of option

1.1 Option D1........................................................................................................................................................................................................................................3

1.2 ANSI numbers..............................................................................................................................................................................................................................3

1.3 Software version........................................................................................................................................................................................................................ 3

1.4 Parameters.....................................................................................................................................................................................................................................3

1.5 Warnings, legal information and safety.........................................................................................................................................................................3

1.5.1 Warnings and notes.......................................................................................................................................................................................................... 3

1.5.2 Factory settings...................................................................................................................................................................................................................4

1.5.3 Legal information and disclaimer.................................................................................................................................................................................4

2. Function description

2.1 Regulation type (voltage/var/cos phi).............................................................................................................................................................................5

2.1.1 Regulation type based on breaker states................................................................................................................................................................ 5

2.1.2 Regulation type based on digital inputs....................................................................................................................................................................5

2.2 AVR regulation failure............................................................................................................................................................................................................. 6

2.3 Manual AVR control..................................................................................................................................................................................................................6

2.4 Voltage-dependent cos phi/Q control (y2(x2) droop)............................................................................................................................................. 7

2.4.1 Voltage support...................................................................................................................................................................................................................7

2.4.2 Example of voltage-dependent cos phi control................................................................................................................................................... 11

2.5 Power-dependent cos phi/Q control (y2(x2) droop).............................................................................................................................................12

2.5.1 Power support...................................................................................................................................................................................................................12

2.5.2 Example of power-dependent cos phi control..................................................................................................................................................... 15

OPTION D1 4189341263B EN Page 2 of 16

1. Description of option

1.1 Option D1

Option D1 is a combined software and hardware option. The specific hardware selection depends on the required interfacing to the
automatic voltage regulator (AVR).

Functions

• Automatic regulation type selection

◦ Option T2 (Digital AVR) is required for automatic voltage regulation with DEIF's Digital AVR's DVC 310, DVC 550 and/or

Nidec's D510.

◦ Option T3 (NIDEC D550 support) is required for Nidec's Digital AVR D550.

◦ For more information, see DEIF's DVC 550 Designer's handbook.

• Voltage-dependent cos phi/Q control (y2(x2) droop)

• Power-dependent cos phi/Q control (y2(x2) droop)

1.2 ANSI numbers

Function

Voltage synchronisation matching 25, 90

Constant voltage control for stand-alone generator 90

Constant reactive power control for paralleling generator 90

Constant cos phi control for paralleling generator 90

Reactive power load sharing for paralleling with other generators 90

ANSI no.

1.3 Software version

This document is based on the AGC-4 Mk II software version 6.00 and the AGC-4 software version 4.79. Option D1 is included in
the standard AGC-4 Mk II.

1.4 Parameters

The relevant parameters are included in the function descriptions. For more information, see the Parameter list.

There are also relevant settings under Advanced Protection in the utility software.

1.5 Warnings, legal information and safety

1.5.1 Warnings and notes

Throughout this document, a number of warnings and notes with helpful user information will be presented. To ensure that these are
noticed, they will be highlighted as follows in order to separate them from the general text.

Warnings

DANGER!

Warnings indicate a potentially dangerous situation, which could result in death, personal injury or damaged equipment, if
certain guidelines are not followed.

OPTION D1 4189341263B EN Page 3 of 16

Notes

INFO

Notes provide general information, which will be helpful for the reader to bear in mind.

1.5.2 Factory settings

The Multi-line 2 unit is delivered from the factory with default settings. These are not necessarily correct for the engine/generator set.
Check all the settings before running the engine/generator set.

1.5.3 Legal information and disclaimer

DEIF takes no responsibility for installation or operation of the generator set. If there is any doubt about how to install or operate the
engine/generator controlled by the Multi-line 2 unit, the company responsible for the installation or the operation of the set must be
contacted.

INFO

The Multi-line 2 unit is not to be opened by unauthorised personnel. If opened anyway, the warranty will be lost.

Disclaimer

DEIF A/S reserves the right to change any of the contents of this document without prior notice.

The English version of this document always contains the most recent and up-to-date information about the product. DEIF does not
take responsibility for the accuracy of translations, and translations might not be updated at the same time as the English document.
If there is a discrepancy, the English version prevails.

OPTION D1 4189341263B EN Page 4 of 16

2. Function description

2.1 Regulation type (voltage/var/cos phi)

The controller uses one of the following to select the regulation type:

1. The generator breaker (GB) and mains breaker (MB) states

2. Digital inputs

2.1.1 Regulation type based on breaker states

Regulation type

Fixed voltage X X

var sharing X

Fixed cos phi X

INFO
var sharing is a mix of fixed voltage and var sharing regulation, and requires option G3 or G5. (If hardware option M12 is

selected, then option G3 is included in the standard AGC-4 Mk II.) The reactive load is shared equally between the
gensets, AND the voltage is maintained at the nominal value.

GB open GB closed, MB open GB closed, MB closed

2.1.2 Regulation type based on digital inputs

You can use digital inputs to select the regulation type. This allows the controller to use external set points, for example, from an
external potentiometer or a PLC.

Regulation type

Fixed voltage Stand-alone generator or GB opened +/-10 V DC input ~ nominal voltage +/-10 %

Fixed var Fixed reactive power 0 to 10 V DC input ~ 0 to 100 % reactive power*

Fixed cos phi Fixed cos phi -10 to 0 to 10 V DC input ~ 0.6 capacitive to 1.0 to 0.6 inductive cos phi

Comment Analogue input relationship to external set point

*Note: 0 to 100 % relates to the nominal power of the generator.

Configuring the inputs

To use a digital input to activate an external set point, configure the digital input function Ext. Voltage control, Ext. cosphi control
and/or Ext. Var control using the PC utility software (USW), as shown below.

OPTION D1 4189341263B EN Page 5 of 16