中国电机工程学报2017，Vol.37Issue(21)：6303-6312,10.DOI:10.13334/j.0258-8013.pcsee.170037
MMC对交流系统三相短路故障短路电流影响的机理研究
Analysis of the Short-circuit Current of MMC-HVDC
摘要
Abstract
Short circuit current characteristics of modular multilevel converter (MMC) have been studied in this paper. First of all,this paper introduced the principle of MMC. Furthermore, the injection short circuit current characteristics of MMC were analyzed. When the three-phase short circuit fault occurs near the converter station, the MMC will supply circuit current, and the converter station presents the current source characteristics There are two stages of the short circuit current. The first is the transient process. After the controllers working, it is totally different from generator, and then there is no DC component anymore. The second is the steady - state stage. The size of short circuit current is related to the control schemes, operation mode and control parameters of MMC. Through comparison with and analysis of the testing results on a typical system, it is shown that the proposed characteristics are accurate. The research result offers a reference of construction of power grid.关键词
模块化多电平换流器/短路电流/控制器参数Key words
modular multilevel converter (MMC)/short-circuit current/control parameters分类
信息技术与安全科学引用本文复制引用
卜广全,李英彪,王姗姗,赵兵,王铁柱,杨艳晨..MMC对交流系统三相短路故障短路电流影响的机理研究[J].中国电机工程学报,2017,37(21):6303-6312,10.基金项目
国家电网公司科技项目《±500kV柔性直流电网运行特性与控制技术研究》 （）
国家重点研发计划(2016YFB0900600).Supported by Technology Projects of State Grid Corporation of China （2016YFB0900600）
National Key Research and Development Program of China (2016YFB0900600). （2016YFB0900600）
