电力电容器噪声谐波影响特性试验研究  

Experimental Study on the Impact of Noise Harmonics on Power Capacitor

作　　者：查志鹏[1] 康文斌[1] 张波[1] 梅刚[1] 彭庆华[1] 

机构地区：[1]中国电力科学研究院,武汉430074

出　　处：《高压电器》2016年第7期172-178,共7页High Voltage Apparatus

摘　　要：分析了电容器噪声产生机理,利用10 kV电能质量谐波源试验平台,开展工频基波叠加不同畸变率谐波电压条件下并联电容器的噪声试验研究,得出不同次谐波时电容器噪声变化曲线,分析谐波对10 kV并联电容器的影响程度,针对典型条件下电容器噪声频谱进行分析。试验结果表明,基波叠加谐波的激励信号作用下,电容器噪声频率主要集中于基波二倍频率、h+1次谐波频率、h-1次谐波频率和2h次谐波频率特征频率上。In this study, the generation mechanism of capacitor noise was analyzed, and a shunt capacitor noise experiment was conducted on a 10 kV power quality harmonic disturbance source test platform under the voltage with superposition of power-frequency fundamental wave and harmonics with different voltage distortion rates. Consequently, the harmonic noise curve of the capacitor was obtained under the harmonics with different order, and the impact of the harmonics on 10 kV parallel capacitor, as well as the capacitor noise spectrum in typical condition, was analyzed. Test results show that for the activation source of fundamental wave superposed with harmonics, the frequency of capacitor noise mainly focuses on the characteristic frequencies of fundamental wave＇s double octave frequency, （h＋l）th harmonic frequency, （h-1）th harmonic frequency, and 2hth harmonic frequency.

关 键 词：并联电容器 噪声产生机理 电能质量谐波扰动源 声压值 特征频率 试验分析 噪声频谱曲线 

分 类 号：TM531.4[电气工程—电器]