【摘要】 超高压气体绝缘开关设备(GIS)中的隔离开关操作产生的特快速瞬态过电压(VFTO)会对开关及其周围设备产生严重的干扰。针对这一工程问题,给出了VFTO辐射干扰的场-路-波协同仿真方法。结合工程实例,首先用准静态电磁场分析方法提取了GIS的等效电路,结合开关电弧的时变电阻模型,应用宽带电路方法得到VFTO的等效时变电压源,最后利用时域瞬态全波方法仿真了VFTO在空间内的电磁场干扰。该方法对于高压开关的设计具有参考意义。更多还原

【Abstract】 Aimed at the problem that the VFTO originating from operations of isolating switch in GIS may produce a fearful interference with the switch and its peripherals,a collaborative simulation method by Field-circuit-wave of VFTO radiation interference is proposed in this paper.Combined with project living example,the GIS equivalent circuit is extracted by means of quasi-static electromagnetic field analysis firstly.Furthermore,the equivalent time-varying voltage source of VFTO can be obtained via associating the time-varying resistance model of switching arc and the broadband circuit method.Finally,using transient full wave technique in time domain,the spatial electromagnetic interference by VFTO is simulated.This method has significance for reference to the high voltage switch design.更多还原