摘要
在谐波较为严重的系统中投入普通电容器来补偿无功,会产生谐波电流放大,给电网造成极大的污染;在谐波负载变化时投入普通的3次、5次、7次和高通等滤波器,也会产生谐波电流放大,甚至发生并联谐振。针对此问题设计的实用新型补偿装置是在电网侧串联滤波电感,在负载侧并联带特定电抗率的电容器,电容器采用无触点开关动态投切,装置能稳定运行,达到较好的补偿效果。
When capacitors are used for reactive power compensation under harmonic load, the harmonic current would be seriously amplified. Although normal passive filters are fixed in distributing network, the harmonic current would be still amplified and the system would be taken into probably resonance when the load is changed. A novel and practical device for reactive power compensation and harmonic suppression is presented. A filter inductor of six-percentage rated load capability is embedded in the power supply system. Thyristor switched capacitors are serial with special reactance rate air core reactors and all the reactors are fixed in low voltage metal cubicle. The results of simulation and experiments prove that this hybrid compensator comes out a good effect in reactive-power compensation and harmonic suppression.
出处
《电气应用》
北大核心
2007年第6期21-25,共5页
Electrotechnical Application
关键词
动态无功补偿
谐波抑制
TSC
电抗率
dynamic reactive power compensation harmonic suppression TSC reactance rate
