银川东换流变电站限制短路电流的方法探讨  

Discussion on the method of limiting short-circuit current in East Yinchuan Converter Substation

作　　者：黄欣 陆洪建 杨晨 HUANG Xin;LU Hongjian;YANG Chen(Maintenance Company Of State Grid Ningxia Electric Power Co.,Ltd.,Yinchuan Ningxia 750011,China)

机构地区：[1]国网宁夏电力有限公司检修公司,宁夏银川750011

出　　处：《宁夏电力》2020年第3期14-17,31,共5页Ningxia Electric Power

摘　　要：为限制银川东换流变电站的短路电流水平,采用了从330 kV解开电磁环网、主变中性点加装小电抗和750 kV加装线路串联电抗等传统限流措施,以保证变电站母线短路电流不超标。在此基础上,提出了快速开关应用于限制变电站短路电流的方法,研究结果表明:利用快速开关型故障限流器,采用双母双分段和输电线路363 kV快速开关技术,可以更加有效地控制银川东短路电流水平,为解决宁夏电网发展中银川东地区短路电流超标问题提供参考。In order to limit the short-circuit current level of the East Yinchuan Converter substation,the traditional current-limiting measures,such as uncoupling the electromagnetic loop network from 330 kV,adding small reactance to the neutral point of the main transformer and adding line series reactance to 750 kV,have been adopted to ensure that the substation bus short-circuit current is not excessive. On this basis,the method of using fast switch to limit the short-circuit current of substation is proposed. The research results show that using fast switch type fault current limiter,adopting the 363 kV fast switch technology of double-bus and double-section and transmission line,it can effectively control the level of short-circuit current in East Yinchuan Converter Substation and provide reference for solving the problem of over-standard short-circuit current in East Yinchuan Converter Substation in Ningxia power grid development.

关 键 词：快速开关 限制短路电流 双母双分段 

分 类 号：TM713[电气工程—电力系统及自动化]