摘要
本文针对普遍存在的并联电容器投入电网后使电网谐波放大的现象,分析了电容器运行使电网谐波放大的机理;探讨了在电容器组中串联电抗器对谐波放大的影响;并得出结论:采用混合型串联电抗器可以有效抑制电网中各次谐波的放大。从抑制谐波放大的角度出发,编制了优化选择电容器组中串联电抗器参数的计算程序。结合北京南苑变电站进行了实例计算,结果令人满意。
The mechanism of harmonic amplification in power systems caused by shunt capacitors under operation is analysed; the effect of reactors connected in series with the capacitors on restraining the harmonic amplification is investigated. It is concluded that the harmonic amplification in power systems is effectively restrained by using mixed series reactors. A program for optimizing the parameters of the series reactors is developed. A practical computation with this program on Beijing's two substations is carried out and the result is satisfactory.
关键词
电网
谐波技术
抑制
harmonic amplification
restraining
mixed series reactors
