Study on the Spatial Radiation EMI Characteristics of GIS Caused by Disconnector Operation

Development of Transient Electric Field Radiation Simulation Device during Gas Insulation Switch Operation

“…GIS substation switch (including isolating switch and circuit breaker), contact gap occurs breakdown discharge breakdown or heavy, produce the abrupt change of travelling wave to spread, wave impedance changes happening in catadioptric, form the very fast transient overvoltage and fast transient current, not only pose a threat to equipment insulation, also by conduction, radiation and other coupling method in transient electromagnetic disturbance secondary device ports [4,5]. Transient disturbance has the characteristics of short rise time of waveform, large steepness of wave-front, wide frequency range and continuous multiple pulses, etc., which is easy to cause interference to relay protection, control, monitoring and measurement signals of GIS substation [6][7][8].…”