10 kV并联电容器谐振分析与对策研究  

Resonance Analysis and Countermeasure Research of 10 kV Shunt Capacitor

作　　者：孔垂锐 詹兴旺 文虎标 周航 李文娟 彭朝柱 KONG Chuirui;ZHAN Xingwang;WEN Hubiao;ZHOU Hang;LI Wenjuan;PENG Chaozhu(Qujing Malong Power Supply Bureau of Yunnan Power Grid Co.,Ltd.,Qujing 655000,China;School of Electric Power Engineering,Kunming University of Science and Technology,Kunming 650500,China)

机构地区：[1]云南电网有限责任公司曲靖马龙供电局,云南曲靖655000 [2]昆明理工大学电力工程学院,云南昆明650500

出　　处：《机械与电子》2024年第10期3-7,共5页Machinery & Electronics

基　　金：云南电网公司科技项目(YNKJXM20220053)。

摘　　要：针对近期发生在云南电网某供电局的一起谐波放大事件,首先对电容器投切前后的实测谐波数据进行对比分析,验证了这是一次由于并联电容器接入后,与系统发生谐波谐振造成谐波电流放大的现象,然后通过仿真建模揭示了并联电容器对谐波电流放大的机理,最后基于谐波谐振理论提出了针对10 kV并联电容器谐波谐振的抑制措施。Aiming at a recent harmonic amplification event in a power supply bureau of Yunnan Power Grid,the measured harmonic data before and after capacitor switching were compared and analyzed to verify that this is a phenomenon of harmonic current amplification caused by harmonic resonance with the system after the shunt capacitor is connected,and then the mechanism of harmonic current amplification by shunt capacitor was revealed through simulation modeling.Finally,based on the theory of harmonic resonance,the suppression measures for harmonic resonance of 10 kV shunt capacitors were proposed.

关 键 词：并联电容器 谐波谐振 谐波放大 串抗率 

分 类 号：TM531[电气工程—电器]