摘要
GIS内开关操作引起的快速暂态过电压(VFTO)严重威胁到电力系统运行的安全性,为了找出产生VFTO的原因,针对某110 kV GIS,确定了相关参数,利用ATP-EMTP软件建立了仿真模型,分析了不同类型开关操作下GIS内部各节点的VFTO。研究结果显示,分闸操作比合闸操作产生的VFTO幅值大,隔离开关操作产生的VFTO幅值远大于其他操作,切换母线操作产生的VFTO较严重,母线端部和被操作开关处VFTO幅值远高于其他节点,最大值可达到2.382 p.u.。
The rapid transient overvoltage caused by switching operations in GIS seriously threatens the safety of the power system.In order to find out the cause of VFTO,relevant parameters were determined for a certain 110 kV GIS.A simulation model was established using ATP-EMTP software,and the VFTO of each node in the GIS under different types of switch operations was analyzed.The research results showed that the VFTO amplitude generated by the opening operation was larger than the closing operation.The VFTO amplitude generated by the isolation switch operation was much larger than other operations and the VFTO generated by the switching bus operation was more serious.The VFTO amplitude at the end of the bus and the operated switch was much higher than other nodes,and the maximum value could reach 2.382 p.u.
作者
张向军
马娟
ZHANG Xiangjun;MA Juan(NARI-Relays Electric Co.,Ltd.,Nanjing 211102,China;Wulong Power Supply Branch,State Grid Chongqing Electric Power Company,Chongqing 408500,China)
出处
《电工技术》
2020年第23期39-42,47,共5页
Electric Engineering
