Author_Institution :
General Electric Co., Salem, VA, USA
Abstract :
A bidirectional 18-pulse voltage-source converter utilizing gate-turnoff thyristors (GTOs) is described. The converter, which is rated 10 MVA, was placed in service in early 1988 to connect an energy storage battery to a utility grid. The converter is rated and controlled to operate in all four quadrants (discharge, charge, leading VAr, or lagging VAr) at the full 10 MVA rating. It is capable of independent rapid control of real and reactive power with a transient response of 16 ms to changes in commanded value of real or reactive power. Thus it is usable as a reactive power controller (static VAr control), voltage control, frequency control, power system stabilizer, or real power peaking station. For use as a reactive power controller only, no battery would be needed. The design, construction, control, and application of the converter are described, and performance data taken at factory power test and at the installation are given
Keywords :
power convertors; secondary cells; thyristor applications; 10 MVA; 10 MW; GTOs; battery peaking service; bidirectional 18-pulse voltage-source converter; charge; discharge; factory power test; frequency control; gate-turnoff thyristors; installation; lagging VAr; leading VAr; power system stabilizer; reactive power controller; real power peaking station; static VAr control; voltage control; Batteries; Control systems; Energy storage; Frequency control; Power system transients; Reactive power; Reactive power control; Thyristors; Transient response; Voltage control;
