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电网技术  2010 

合成试验方法在VSC-HVDC换流阀短路电流试验中的应用

, PP. 9-13

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Abstract:

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(modularmulti-levelconverter,MMC)构成的电压源换流器高压直流输电(voltagesourceconverterbasedhighvoltagedirectcurrent,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。

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