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在谐波负载下用电容器进行无功补偿时,会产生谐波电流严重放大、甚至引起谐振的现象。本文对该问题进行了仿真和试验研究,指出对于谐波较强的负载以及系统本身存在谐波时,若不采用改造措施,用投切电容器补偿无功功率是不合适的。
Harmonic load with capacitors for reactive power compensation, there will be a serious harmonic current amplification, or even cause resonance phenomenon. This paper simulates and tests the problem, and points out that it is unsuitable to compensate the reactive power with the switched-capacitor when the harmonic load is strong and the system itself has harmonics.