换流站电力电容器单元噪声试验电路研究  

Study on Test Circuit for Noise Test of Power Capacitor Units in Converter Station

作　　者：张祖安 黄莹 李岩 赵晓斌 黄成 裴爱华 辛清明 郭龙 ZHANG Zu an;HUANG Ying;LI Yan;ZHAO Xiaobin;HUANG Cheng;PEI Aihua;XIN Qingming;GUO Long(State Key Laboratory of HVDC,Electric Power Research Institute,CSG,Guangzhou 510663,China;China Southern Power Grid Co.,Ltd.,Guangzhou 510663,China)

机构地区：[1]直流输电技术国家重点实验室(南方电网科学研究院),广州510663 [2]中国南方电网有限责任公司,广州510663

出　　处：《南方电网技术》2018年第4期31-38,共8页Southern Power System Technology

基　　金：中国南方电网公司科技项目(ZBKJXM20170062)~~

摘　　要：针对常规高压直流输电工程中电力电容器装置噪声突出,需要从源头进行控制的情况,给出了可按照电容器单元实际运行工况进行噪声测试的试验电路,包括可同时加载工频和多个谐波电流的桥式电路以及同时加载直流电压和多个谐波电流的试验电路,并提出了试验电路中关键设备——谐频电源的技术方案,结合仿真波形证明了试验电路可行性。基于所提出的试验电路,建立了电力电容器噪声试验平台,开展了换流站多台电容器单元的噪声试验。试验结果与理论值的对比分析验证了试验电路可满足直流工程中电力电容器单元的噪声测试要求。In view of the fact that the noise of power capacitor devices in conventional high voltage direct current(HVDC)transmission projects is prominent and needs to be controlled from the source,test circuits for noise test in accordance with the actual operating conditions of power capacitor units are proposed,including a bridge circuit which can load power frequency and multiple harmonic currents simultaneously,and a test circuit which can load DC voltage and multiple harmonic currents simultaneously.Meanwhile,the technical scheme of the harmonic power supply,which is the key equipment in the circuit,is illustrated.The feasibility of the circuits are verified by the simulation waveform.Based on the proposed circuit,a power capacitor noise test platform is set up,and the noise test of multiple power capacitor units in converter station are carried out.The comparison between the test results and the theoretical values proves that the test circuit can meet the noise test requirements of power capacitor units in HVDC projects.

关 键 词：高压直流输电 换流站 电力电容器 噪声测试 试验电路 

分 类 号：TM53[电气工程—电器]