高压电器2018，Vol.54Issue(1)：90-96,7.DOI:10.13296/j.1001-1609.hva.2018.01.013
550kV GIS站VFTO计算及抑制方法研究
Study on VFTO Calculation and Inhibition Method of 550 kV GIS Station
摘要
Abstract
The damage of VFTO to the equipment increases with the increase of the rated voltage,and the suppression of VFTO is of great importance to guarantee the safe operation of the equipment of the GIS substation.Bus design thought,this paper puts forward a kind of damping of the damper bus consists of hollow out solenoid and parallel with the resistance,under power frequency,the insulation performance of busbar,flow capacity and mechanical properties of impact,under the high frequency,the traveling wave current form high voltage through the inductor,the wave energy can be absorbed by the two end damping resistors under the high voltage.This paper set up a typical 550 kV GIS station VFTO calculation model,the analysis of the VFTO situation of the main nodes of the substation are analyzed under the cases of the 550 kV GIS substation maintenance turns 40 kinds of operating mode under the eight kinds of running condition,the distribution diagram of the maximum VFTO generated by disconnector operation is obtained.According to the largest VFTO amplitude distribution of busbar equipped with damping,by the calculation,high amplitude VFTO produced by isolating switch operation times is significantly reduced,site VFTO most large amplitude reduced from 3.0 p.u.to 2.2 p.u.,and bus bar Ⅰ right end of 3.0 p.u.amplitude reduced to 1.4 p.u..In this paper,the research results show that the damping bus can effectively reduce the VFTO amplitude and frequency,to reduce caused by VFTO GIS internal equipment,external connection equipment and secondary equipment safety issues have a significant effect.关键词
VFTO/抑制/阻尼母线/GISKey words
VFTO/inhibition/damping busbar/GIS引用本文复制引用
吴士普,李璿,臧英,程军卫,杜建平,张健,李森..550kV GIS站VFTO计算及抑制方法研究[J].高压电器,2018,54(1):90-96,7.基金项目
国家电网公司科技项目(GYW17201600005).Project Supported by Science and Technology Plan of SGGC(GYW17201600005). （GYW17201600005）
