合成试验方法在VSC-HVDC换流阀短路电流试验中的应用  

Application of Synthetic Test Method in Short-Circuit Current Tests for Voltage Source Converter Based High Voltage Direct Current Valves

作　　者：罗湘[1] 汤广福[1] 查鲲鹏[1] 贺之渊[1] 高冲[1] 

机构地区：[1]中国电力科学研究院,北京市海淀区100192

出　　处：《电网技术》2010年第7期9-13,共5页Power System Technology

基　　金：国家重点基础研究发展计划项目(973项目)(2004CB-217907)~~

摘　　要：合成试验方法是用多套电源分别提供试品在试验中所需应力的试验方法。为检验由模块化多电平换流器(modular multi-level converter,MMC)构成的电压源换流器高压直流输电(voltage source converter based high voltage direct current,VSC-HVDC)换流阀设计的正确性及其对暂态工况应力的耐受性,研究了MMC阀暂态运行试验的试验方法,分析了与过电流关断试验和短路电流试验相关工况的应力,提出了2种等效试验方法,并将合成试验方法应用于试验电路的设计中,给出了试验电路与实际工况下阀的应力波形,结合关键应力等效性分析,验证了上述试验方法和试验电路的正确性和有效性。Synthetic test method is such a test approach, which provides required stresses for test sample under different operational conditions during the operation test respectively by multi-sets of power suppliers. To examine the design validity of converter valve in voltage source converter-based high voltage direct current （VSC-HVDC） based on modular multi-level converter （MMC） and its stress tolerance under transient operation condition, an approach to perform transient state operation test for valves in MMC is researched. The stresses related to overcurrent turn-off test and short-circuit current test are analyzed, then two equivalent test methods are proposed and synthetic test method is applied in the design of testing circuit and then the stress waveforms of testing circuit and that under practical operation conditions are given. Combining with the analysis on equivalence of key stresses, the correctness and effectiveness of above-mentioned test method and testing circuit are verified.

关 键 词：合成试验方法 模块化多电平换流器 电压源换流器高压直流输电换流阀 暂态运行试验 

分 类 号：TM83[电气工程—高电压与绝缘技术]