隔离开关分和空载母线对VFTO的影响研究  

Study on the Influence of Disconnector Opening and No-load Bus on VFTO

作　　者：吴琦 WU Qi(CollegeofElectricalandNewEnergy,ThreeGorgesUniversity,HubeiYichang 443000,China)

机构地区：[1]三峡大学电气与新能源学院,湖北宜昌443000

出　　处：《电工材料》2022年第2期14-16,共3页Electrical Engineering Materials

基　　金：国家自然科学基金(51907096)。

摘　　要：隔离开关分合空载母线产生的VFTO可能会对变电站内互感器等电子仪器产生电磁干扰,因此对VFTO进行研究受到了广泛关注。本研究建立了隔离开关击穿的仿真模型,计算了隔离开关击穿时回路的高频振荡电压和电流,并分析了电容分压器参数、回路地线电感对暂态干扰的影响,为后续VFTO对电子仪器的电磁干扰研究奠定了基础。The VFTO generated by disconnecting switch opening and closing no-load bus may produce electromagnetic interference to electronic instruments such as transformer in substation,so the research on VFTO has attracted extensive attention.In this paper,the simulation model of disconnector breakdown is established,the high-frequency oscillation voltage and current of the loop during disconnector breakdown are calculated,and the effects of capacitor voltage divider parameters and loop ground wire inductance on transient interference are analyzed,which lays a foundation for the follow-up study of VFTO on electromagnetic interference of electronic instruments.

关 键 词：隔离开关 VFTO 变电站 

分 类 号：TM564[电气工程—电器]