谐波强度对电容器损耗影响的试验研究  

Experimental research of harmonic intensity effect on capacitor loss

作　　者：刘书铭[1,2] 李琼林[1,2] 余晓鹏[1,2] 张振安[1,2] 

机构地区：[1]河南省电力公司电力科学研究院,河南郑州450052 [2]国家电网公司电力谐波特性分析评估技术实验室,河南郑州450052

出　　处：《电力自动化设备》2014年第5期169-173,共5页Electric Power Automation Equipment

基　　金：国家电网公司科技项目(SG11113)~~

摘　　要：首先简要说明了电容器的损耗计算方法及其谐波耐受能力的判断方法。基于10 kV大容量电能质量综合试验平台,研究谐波强度对电容器的影响。通过串联电抗率不同的电抗器,使电容器承受不同畸变率、有效值和峰值的电压,测量电容器容值及介质损耗的变化。试验结果表明:电容器承受电压的有效值越大,持续时间越长,容值减小越多;电压峰值越高,谐波电压含量越高,电容器的容值变化率越大,老化越快。The calculation of capacitor loss and the determination of its harmonic tolerance capability are briefly explained and the effect of harmonic intensity on capacitor is researched based on the 10 kV large- capacity comprehensive test platform of power quality. By connecting different reactors with respective reactance in series,voltages of different distortion rates,square root values and peak values are exerted on the capacitor tested and the corresponding capacitance and dielectric loss are measured. Experimental results show：the capacitor capacity decreases along with the increase of the RMS or duration of capacitor voltage,while its variation rate or aging speed increases along with the increase of its peak value or harmonic content.

关 键 词：电容器 谐波分析 损耗 量化分析 试验 电能质量 

分 类 号：TM53[电气工程—电器]