配电网中高次谐波对并联补偿电容器的影响及其限制措施

The influence of upper harmonic waves in distribution network to shunt compensation capacitor and the suppression methods

供配电系统通常接有并联补偿电容器，配电网中的高次谐波对电容的影响很大。本文从理论上分析了串联谐振和并联谐振引起的电容器过电流，阐述了无论哪类谐波源，只要参数配合适当，都可能出现电流放大现象或谐波谐振，使电容器过负荷，甚至损坏。并由此找出相应的抑制措施。

Power Supply System is often placed with shunt compensation capacitors and the upper harmonic waves in the distribution network have much influence on the capacity. This thesist heoretically analyses the capacitor ex- cess current induced by the series resonance and the parallel resonance. No matter what type of harmonics, as long as the parameters fit well, current amplification or harmonic resonance will happen. This will overburden or even damage the capacitor. And this article also dis- cussed the above mentioned problem and finded out the corresponding suppression methods.