中压侧双极短路故障下改进型ISOP直流变压器的参数关系和直流电抗器电感计算  

Parameter relationship and inductance calculation of DC reactor for improved ISOP type DCT during bipolar short circuit fault at medium voltage side

作　　者：王志刚 侯凯 王小红[1,2,3,4] 梁帅奇 王国宁[1,2,3,4] 曾肖明 徐建松[1,2,3,4] WANG Zhigang;HOU Kai;WANG Xiaohong;LIANG Shuaiqi;WANG Guoning;ZENG Xiaoming;XU Jiansong(State Key Laboratory of Smart Grid Protection and Control,Nanjing 211106,China;NARI Group Corporation(State Grid Electric Power Research Institute),Nanjing 211106,China;NARI Technology Co.,Ltd.,Nanjing 211106,China;NARI-TECH Nanjing Control Systems Co.,Ltd.,Nanjing 211106,China)

机构地区：[1]智能电网保护和运行控制国家重点实验室,江苏南京211106 [2]南瑞集团有限公司(国网电力科学研究院),江苏南京211106 [3]国电南瑞科技股份有限公司,江苏南京211106 [4]国电南瑞南京控制系统有限公司,江苏南京211106

出　　处：《电力自动化设备》2022年第6期218-224,共7页Electric Power Automation Equipment

基　　金：国家电网有限公司总部科技项目(SGNR0000KJJS1808009)。

摘　　要：讨论了改进型输入串联输出并联(ISOP)直流变压器发生双极短路故障时的电气特性和各个参数之间的关系。根据直流故障穿越的特性,在小时间尺度内,将中压侧直流电抗器电感作为因变量,推导了其与其他参数变量的显式方程,并提出了一定约束条件下的简化计算方法,更加有利于工程应用。工程应用结果验证了所提计算方法的准确性。The electrical characteristics and relationship among parameters of improved ISOP(Input Series Output Parallel)type DCT(Direct Current Transformer)during bipolar short circuit fault at medium voltage side are discussed.According to the characteristics of DC fault ride-through,in a small time scale,the inductance of DC reactor at medium-voltage side is taken as the dependent variable,and the explicit equations between it and the other parameters are derived.Then,a simplified calculation method under certain constraints is proposed,which is more conducive to engineering application.Finally,the accuracy of the proposed calculation method is verified by engineering application.

关 键 词：改进型ISOP 直流变压器 直流电抗器 中压短路故障 故障穿越 参数关系 计算方法 显式方程 

分 类 号：TM41[电气工程—电器] TM47