The harmonic comes from power system side, which is caused mainly by exciting current of the large capacity transformer besides the nonlinear loads.
认为谐波源来自系统侧，除了非线性负荷外，主要是由大型电力变压器激磁电流所造成。
In a practical circuit, the series APF can compensate a high capacity voltage harmonic source load or several low capacity voltage harmonic source loads.
在实际应用中，串联型APF既能对单个大容量电压型谐波源负载进行补偿，也能对多个小容量电压型谐波源负载进行集中补偿。
The system can measure the harmonic in HV power network, and avoid the problem of harmonic measure signal distortion caused by capacity type voltage transformer (CVT).
应用该测量系统测试高压电网中的谐波，可以避免因高压电网中取自电容式电压互感器（CVT）的谐波测量信号失真的问题。
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