Voltage deviation and load unbalance compensation control method of static var compensator
LI Runqiu, ZHU Anming, WANG Zhongyang, JIAO Yikun
(Shanxi Economic Research Institute, State Grid, xian 710065, China)
 

Abstract: Aiming at the problems of the enterprise power distribution system voltage fluctuation and the threephase load was not stable in static var compensator (SVC) as the research object, a kind of voltage deviation and unbalanced load compensation based static var compensator control method was proposed. The ZieglerNichols method was used to optimize the parameters of the voltage controller in SVC. Through virtual symmetrical threephase system synchronous reference coordinate rotation transform compensation susceptance calculation method, the threephase load imbalance was compensated. The simulation results show that the control method is simple, flexible and has good dynamic response speed and tracking performance.
Key words: voltage waveform; static var compensator; rotating coordinate transformation