The Latest Generation of Digital Voltage Regulators

IREG©

Triple Redundant

IREG© is a compact, modular designed system for excitation and voltage control of synchronous machines. It also uses alternating and direct current exciters for static systems.

IREG© provides a wide performance and flexibility for motor- and generator applications. Limitation and additional control functions can easily be designed and implemented by the operator, according to the specific plant capabilities.

IREG© is connected to a power stage called “IREG-power” in the basic version. The implemented CAN-Bus topology allows the operation of up to 3 IREG voltage regulators and 3 IREG-power modules simultaneously. Hot-Standby, redundancy and TMR (Triple Modular Redundancy) can be implemented easily, according to the needs of the mission-critical plant processes.

01. Diagnosis

An innovative and full graphic colour touch screen provides access to the necessary control and monitoring functions, as well as the diagnostic and alarm lists.

02. USB Update

The Firmware updates or extensions of functionality can be loaded via the USB port located on the front panel or over the engineering software directly. An extensive, permanent self-monitoring guarantees a high degree of system stability.

03. Engineering

Thanks to the clearly structured functional groups and the innovative commissioning tools, it is easy to adapt or modify the parameters to the plant-specific conditions.

Comfortable operation

Touchscreen components

The integrated touchscreen panel allows you to easily achieve all the functions for visualizing and operating the IREG. The resolution is 800 x 480 pixels and is easy to read.

Functions of the IREG voltage controller

Available functions can be activated or combined via the engineering tool. Thereby it is possible to parameterize a superimposed control (voltage regulator output = current regulator input), resulting in the ability to customize the corresponding IEEE models.

 
Qty
IREG
IREG power
Note
Voltage Control
1
Regulating accuracy <=0.2%
Current Control
1
Reactive Power Control
2
IEEE 421.5 Typ II PI
Reactive Power Control (q/u)
1
VDE-AR-N 4110 / 4120
Reactive Power Control (q/p)
1
VDE-AR-N 4110 / 4120
Power Factor Control
2
IEEE 421.5 Typ II PI
Diode Monitoring
1
On rotating diodes
Motor Soft Start
1
Synchronizing
1
3 phase, own CPU
Synchrocheck 1
1
3 phase, own CPU
LB response time measurement
1
10-1000ms

Limitations

The individual limitations can be activated and parametrized via the Engineering Tool. The IREG complies to all requirements of TAR medium voltage (VDE-AR-N 4110) and TAR high voltage (VDE-AR-N 4120)

 
Qty
IREG
IREG power
Note
Underexcitation
1
IEEE 421.5 Model II
U/F
1
Overexcitation
1
Stator Current
1
Stator Voltage
1
PSS
1
PSS2A/B PSS4B
Alpha min max
1
on AC Systems

External Setpoint Selection

The set value can be made from multiple sources. The corresponding priority rule is determined via the engineering tool.

 
Digital +/-
Analog
FIELDBUS
Ramp
Jump
Limiter
Generator Voltage
Excitation Current
Reactive Power
Power Factor Control
Reactive Power Grid
Power Factor Grid

Inputs and outputs of the IREG©

The inputs and outputs of the IREG© are grouped on the corresponding I/O cards. The signals of the I/O cards provide them to the processor. The signals of the I/O cards are made available to the processor in an isolated manner. The general input and output functionality is freely programmable. The transducer signals are hardware decoupled and led up in double to each DSP.

The DSP processor provides the actual current, voltage, power factor, active power, reactive power, phase angle, and other measurement values. On different measurement results, a secure system state is entered.

The synchronization feature is carried out directly by the DSP’s, where one processor executes the synchronization task and the other one the synchro-check function.

The connection to the field is implemented using industrial connectors.

 
Qty
IREG
IREG power
SpecificationSamplingNote
Digital Inputs
24-72
24-250VDC1kHzProgrammable
Digital Outputs
24-72
250VDC, 8A constantlyProgrammable
Potential Transformer Inputs
6
100-400VAC 16,7-400Hz16bit, 10kHz
Current Transformer Inputs
3
1A or 5A 16,7-400Hz16bit, 10kHz
Analog Inputs
8-16
0-20mA, 4-20mA16bit, 10kHzProgrammable
Analog Outputs
8-16
0-20mA, 4-20mA16bit, 10kHzProgrammable
CAN-A, CAN-B, CAN-C
3
CAN Bus
Exc. Current Measurement
1
Module dependent
Excitation Energy
2
Module dependent
Excitation Power Output
1
Module dependent
Sync. Breaker On
2
250VDC, 8A constantly1x Sync, 1x Check
Sync. Digital Inputs
8
24VDC4x Sync, 4x Check
CONFIG
1
TCP/IP100MBitTMOS Protocol
USB
1
USB 2.0
FIELDBUS
1
PROFIBUSOptional
FIELDBUS
1
PROFINETOptional
FIELDBUS
1
MODBUS TCPOptional

Do you have any questions about our product?

You can ask your questions via our contact form.

Office

LST GmbH, Kirchweg 214, 28199 Bremen

+49 421 – 48 533 460

24H Support

+49 (0) 151 – 544 650 02

+49 (0) 151 – 544 650 06

+49 (0) 151 – 544 650 15

Certified

ISO 9001

Our product are certified by RINA and DNV-GL.

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