Development of on-Line Monitoring System and Aging Characteristics Research of Switchgear
For improving reliable operation of switchgear in power system,an approach for on-line monitoring the insulation characteristic and bus-bar temperature rising of the switchgear is proposed in this paper.Through comparing several existing temperature measurement methods for monitoring temperature rising elevation at bus-bas,a new design of temperature monitoring method is proposed.It adopts quick-magnetic saturated current transformer,temperature sensor and infrared transmission to solve the problem of high voltage isolation.The epoxy resin insulation material which is commonly used in switchgear its aging mechanism data is not complete,seriously restrict on-line monitoring for switchgear,so thousands hours of aging experiment is done on switchgear,systematic study various electrical characteristics variation law on the gradual aging process of epoxy resin insulation materials.Therefore,study on the aging characteristics of switchgearinsulation and its lifetime estimation method is the key technology to understand agingrnechanism better,search for new fault diagnostic method and the way to extend theuseful lifetime of switchgear.At last,the system runs in real system and the result shows the on-line monitoring system is stable and reliable which can be provide reference for on-line monitoring system design of switchgear.
Dielectric loss angle Switchgear Aging characteristics Leakage current
Liu Shuxin Cao Yundong HouChunguang Liu Yang Liu Xiaoming
School of Electrical Engineering,ShenyangUniversity of Technology, Shenyang, China
国际会议
济南
英文
364-367
2013-05-18（万方平台首次上网日期，不代表论文的发表时间）