电力系统保护与控制Issue(24)：132-139,8.
负载不平衡下D-STATCOM控制策略的仿真研究
Simulation study of the control strategy of D-STATCOM in compensating unbalance load
毛彦辉 1夏明超 1李晓亮 1肖伟栋1
作者信息
- 1. 北京交通大学电气工程学院，北京 100044
- 折叠
摘要
Abstract
The mathematical model of distribution static synchronous compensator (D-STATCOM) in each sequence equivalent circuit of unbalanced load is established and the feedback linearization applied to both the positive and negative sequence mathematical model is proposed. The three-phase three-wire unbalanced load current can be decomposed into the positive and negative sequence component, so they can be compensated in the synchronous rotating coordinates system of positive and negative sequence respectively. The positive sequence control makes D-STATCOM generate reactive current required by the load, improving the power factor. The negative sequence control is used to compensate the negative sequence current due to load unbalance in order to balance the grid side current and meet the requirements of National standard. At last, a 10 Mvar/10 kV D-STATCOM system is built in PSCAD, and the simulation results prove that the control strategy can compensate the load unbalance and generate reactive current required by the load at the same time. Furthermore, when the voltage unbalance in the grid side exceeds the national standard, the control strategy can also achieve the desired results, showing the effectiveness.关键词
配电网静止同步补偿器/负载不平衡/无功功率/正负序/反馈线性化Key words
D-STATCOM/load unbalance/reactive power/positive and negative sequence/feedback linearization分类
信息技术与安全科学引用本文复制引用
毛彦辉,夏明超,李晓亮,肖伟栋..负载不平衡下D-STATCOM控制策略的仿真研究[J].电力系统保护与控制,2013,(24):132-139,8.
