特高压GIS暂态过电压特性与绝缘性能

he construction of the ultra high voltage power system, whether from the operation experience or design theory is a new work, put forward the democracy and nationalization of the high standard of power transmission equipment development requirement are proposed. UHV transmission system of GIS is one of the most key equipment, with the improvement of voltage, electric power transmission capacity increases, transient voltage and insulation problem increasingly. In these conditions, the open circuit breaker transient recovery voltage, very fast transient overvoltage, transient earth potential, secondary current have the influence on the performance of the ultra-high voltage GIS, and the insulation characteristics in all kinds of overvoltage are studied. Research results of guiding the insulation structure design production as well as the field operation are provided.