Research on Attenuation Characteristics of UHF Electromagnetic Waves in 500 kV GIS Switchgear
In response to the complex propagation process of UHF electromagnetic waves inside 500 kV GIS switchgear and the potential blind spots in partial discharge online monitoring,a three-dimensional proportional electromagnetic wave propagation simulation model of 500 kV GIS switchgear is established to analyze the attenuation characteristics of UHF electromagnetic wave signals inside the GIS switchgear.It is concluded that the average forward transmission coefficient of 500 kV double-break circuit breaker is lower than that of single-break circuit breaker,and the average forward transmission coefficient of 500 kV corner-type disconnector is lower than that of linear-type disconnector.In addition,GIS opening will cause additional attenuation of UHF electromagnetic waves.
万方数据
维普
