基于级联H桥电路的电力电容器噪声试验系统研究  

Study on Noise Test System of Power Capacitor Based on Cascaded H-bridge Circuit

作　　者：胡治龙[1] 王奔[1] 盖斌[1] 张腾[1] 同聪维[1] 徐子萌 黄熹东[1] HU Zhilong;WANG Ben;GAI Bin;ZHANG Teng;TONG C ongwei;XU Zimeng;HUANG Xidong(Xi＇an High Voltage Apparatus Research Institute Co.,Ltd.,Xi＇an 710077,China)

机构地区：[1]西安高压电器研究院有限责任公司,西安710077

出　　处：《电力电容器与无功补偿》2018年第4期81-88,共8页Power Capacitor & Reactive Power Compensation

摘　　要：本文结合高压直流输电用电容器产品实际参数,提出了基于级联H桥电路的电容器噪声试验电流注入方法,设计了一套可同时满足交流滤波电容器、高压并联电容器和直流滤波电容器等不同类型电容器产品噪声测试要求的试验系统。噪声试验电源采用基于IGBT可关断器件的单相电压源发生器,能够单独输出基波电流或2~50次谐波中1~12种频率谐波的任意谐波电流的组合,也能同时输出基波电流和2~50次谐波中最多12种频率谐波的任意组合。通过PSCAD软件仿真和70%试验系统满容量串、并联模式下电容器产品噪声试验,验证了试验系统设计的正确性和可靠性,等效模拟了高压直流换流站中电容器单元可听噪声,试验结果完全符合GB/T 32524—2016中的相关规定,为衡量高压直流输电工程用电容器噪声水平提供了一种新的测试手段,具有较强的工程指导意义。In this paper,current injection method for noise test of capacitor based on cascade H-bridge circuit is proposed with combination of actual parameter of capacitor for HVDC power transmission and a kind of test system meeting the requirement simultaneously of noise test for such different types of capacitor products as AC filter capacitor,HV shunt capacitor and DC filter capacitor. The single-phase voltage source generator based on IGBT switching element is adopted for the power supply of noise test so to output separately and simultaneously fundamental current or random harmonic current combination from 1-12 kinds of frequency harmonics within 2-50 th harmonics. Both correctness and reliability of the test system is verified by the noise test of capacitor of PSCAD software simulation and under full power series and parallel mode of 70% test system,the audible noise of capacitor unit in the HVDC converter station is equivalently simulated. The test result fully complies with related specification in GB/T 32524-2016,which provides a kind of new test method for measuring the noise level of capacitor of HVDC transmission project and has stronger engineering instruction significance.

关 键 词：高压直流输电 电容器噪声 噪声测试 噪声试验电源 

分 类 号：TM53[电气工程—电器]