基于APF和磁阀式可控电抗器的电能质量综合补偿系统

Power Quality Comprehensive Compensation System Based on APF and Magnetic Valve Controlled Reactor

提出一种磁阀式可控电抗器与APF综合补偿系统,可有效解决磁阀式可控电抗器(MCR)动态响应速度慢、谐波含量较高等问题,介绍了系统的拓扑结构。该系统中,APF补偿负载谐波和MCR产生的谐波由MCR补偿无功电流,同时在MCR动态响应过程中,将APF直流侧电容所产生的直流电流作为MCR的直流激励源,提升MCR的动态响应速度。仿真结果表明该综合补偿系统能有效补偿负载的无功和谐波电流,同时可解决MCR动态响应慢的问题。

In this paper, a kind of magnetic valve controlled reactor and APF comprehensive compensa- tion system is proposed, which can solve such problems as slow dynamic response speed and high harmonic contents. The topological structure of the system is introduced, in which APF compensates load harmonics and harmonics generated by MCR, the reactive power current is compensated by the MCR and, at the same time, during the dynamic response period of MCR, the DC current which is generated by the capacitor at the DC side of APF is used as DC excitation source so to improve the dynamic response speed of MCR. It is shown by the simulation result that the comprehensive compensation system can compensate effectively both reactive power and harmonic current of the load and, at the same time, solve the problem of dynamic response of MCR.