电网的无功补偿与谐波治理

由于大量非线性电力负荷的增加,给电网的正常运行带来了功率因数降低、电磁干扰和谐波污染的问题。功率因数过低,将会导致大量的电能浪费、设备利用率降低和电压偏差过大等;谐波电流的存在,则会引起波形畸变、电力设备基波负载容量下降和电力装置产生谐振等严重问题,有的电力系统甚至引起电力设备损坏事故。文章介绍了无功补偿的必要性以及谐波的产生与危害性,指出无功补偿和谐波治理必须综合考虑、同时进行,并着重分析了确定补偿方案必须重视的几个方面。

Reactive Compensation and Harmonic Tackling of Grid

With the rapid increase use of nonlinear load,the grid faces power factor fall,electromagnetic interference and harmonic contamination problems.These problems will cause heavy waste of energy,reduction of equipment work ratio,oversize warp of voltage,descending of first harmonic capacity and other severe problems.The paper indicated reactive compensation must coordinate with harmonic tackling,process at the same time,emphasized several aspects at the selection of compensation project.