P100C-SX AVR

Digital AVR for brushless and static excitation

A state-of-the-art digital Automatic Voltage Regulator developed and implemented by the Institute of Power Engineering, Gdańsk, with full hardware redundancy at the voltage regulator controller level.

Used for brushless or static excitation systems, on new and retrofit applications, for gas, steam and hydro turbine driven generators of any type.

Brushless excitationStatic excitationNew & retrofitGas, steam & hydro generators

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Full controller-level redundancy

Built-in diagnostics

Features and functionalities

Oscilloscope

100 ms registrations
Up to four channels visible at once
Selection from over 40 internal signal measurements
Previous plotted chart memory for fast comparison
Cursors
Automatic triggering

Recorder

Sampling up to 10 µs
Up to twelve channels registered at once
Selection from over 40 internal signal measurements
Four data slots for previous registrations
Automatic triggering

Long-term data registration

100 ms data registration
Long-term timespan for saved data (multiple years)

Specifications

Controller technical specifications

Parameter	Specification
Voltage measuring	Three-phase 100/120 V, 50/60 Hz; 400 V or 690 V on request
Current measuring	Single-phase or three-phase, 1 A and 5 A
Binary I/O	14 programmable binary inputs, 8 programmable binary outputs With extension board: up to 46 inputs and 24 outputs
Control voltage	24, 48, 110, 125, 220 VDC
Supply voltage	DC battery: 19–35 VDC, 36–60 VDC or 105–320 VDC AC source via 50 VA adapting transformer from excitation voltage or auxiliary AC
Output current	Up to 50 A continuous and 100 A for 10 s at 50 °C ambient Up to 10,000 A with external thyristor rectifiers at 50 °C ambient
Power amplifier	50 A continuous output for compact IGBT and thyristor design; up to 10,000 A with external thyristor rectifier
Communication	Ethernet; RS-232 (9-pin) for local computer; 2 × RS-485 for SCADA and local data panel
Operating temperature	0 °C to +50 °C

Performance

Regulation accuracy

Control mode	Accuracy
AVR mode	Voltage regulation ±2.5% over the load range at rated power factor and constant generator frequency Steady-state stability ±0.1% at constant load and generator frequency Oversaturation (V/Hz) characteristic slope from 0 to 3.0 p.u.
FCR mode	Field current regulation ±1.0% of nominal value for 10% bridge input voltage change or 20% field resistance change
PF mode	±0.02 PF of set point for real power between 1% and 100% at rated frequency
VAR mode	±0.002 VAR of set point for reactive power between −100% and 100%

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