MMC-HVDC换流站过电压与绝缘配合研究  

Study on overvoltage and insulation coordination of MMC-HVDC converter station

作　　者：黄俊[1] 赵成勇[1] 高永强 

机构地区：[1]华北电力大学新能源电力系统国家重点实验室,河北保定071003 [2]山西吕梁东义煤气公司,山西吕梁033400

出　　处：《华北电力大学学报（自然科学版）》2013年第1期1-6,共6页Journal of North China Electric Power University：Natural Science Edition

基　　金：国家自然科学基金资助项目(51177042)

摘　　要：模块化多电平换流器高压直流输电(Modular Multilevel Converters HVDC,MMC-HVDC)换流站的过电压与绝缘配合研究是工程实施中的关键技术之一,对换流站设备的设计、选型、制造和试验都具有重要的指导作用。对世界上首个采用MMC技术的Trans Bay Cable直流输电工程换流站的绝缘配合进行了研究,提出了MMC换流站过电压的分析步骤。在PSCAD/EMTDC环境中搭建仿真模型,统计了MMC-HVDC换流站过电压分布结果,提出了MMC换流站绝缘配合的方案,确定了换流站避雷器参数和保护水平,结合适当的换流站设备绝缘裕度,最终得到了换流站设备的绝缘水平。The overvoltage and insulation coordination of MMC-HVDC converter station is one of key techniques for the implementation of the project, and will guide the design, type selection, manufacturing and testing of converter station equipments. Based on the world＇s first use of MMC Trans Bay Cable project, the insulation coordination of MMC converter station is researched, and the overvoltage analysis procedures are proposed. The specific reasons of overvohage occurring at AC side, DC side and the inside of the converter station are analyzed. Then based on the model built in the PSCAD/EMTDC, the overvohage distribution results are calculated. The MMC converter station insulation coordination scheme is proposed, and the parameters and protection level of MMC converter station arrester are determined. The insulation level of the converter station equipments is determined ultimately by combining with the appropriate converter station equipment insulation margin.

关 键 词：MMC-HVDC 过电压 绝缘配合 换流站 PSCAD EMTDC 

分 类 号：TM721[电气工程—电力系统及自动化]