电压偏差及负荷不平衡补偿的静止无功补偿器控制方法

Voltage deviation and load unbalance compensation control method of static var compensator

针对企业配电网系统中电压波形波动以及三相负荷不平稳等问题,以静止无功补偿器(SVC)为研究对象,提出了一种基于电压偏差及负荷不平衡补偿的静止无功补偿器控制方法。采用Ziegler-Nichols方法,对SVC中电压控制器中参数进行了优化;通过采用虚拟对称三相系统的同步参考旋转坐标变换的补偿电纳的计算方法,对三相负荷的不平衡进行了补偿。仿真结果表明,该控制方法实现简单、运用灵活,且具有良好的动态响应速度及跟踪性能。

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.