Advanced static var compensator control system

Details Advanced static var compensator control system Advanced static var compensator control system

1992-08-12

1994-07-12

Voeltz, Emanuel T.

Electricity: power supply or regulation systems

For reactive power control

Using converter

323212, 363 97, 363 98, G05F 170

Patent

active

053292219

ABSTRACT:
An advanced static VAR (volt ampere reactive) compensator (ASVC) system for coupling with and compensating a transmission line of a power system includes an ASVC controller. A voltage-sourced inverter has an AC side coupled through a series inductance to the transmission line, and a DC side coupled to a capacitor. By monitoring the DC side voltage, two line-to-line voltages and two line currents between the series inductance and the transmission lines, the ASVC controller determines an instantaneous reactive current component of the line current. The ASVC controller adjusts the phase angle of the inverter AC output voltages to compensates the transmission line by negating the instantaneous reactive current, and thus, the undesirable instantaneous reactive power on the transmission line. A method is also disclosed of compensating the instantaneous reactive power flowing over the transmission line.

REFERENCES:
Edwards et al., "Advanced Static VAR Generator Employing GTO Thyristors," IEEE PES Winter Power Meeting, 1988, Paper No. 38WM109-1.

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