Full Wave Simulation of Transient Electromagnetic Field During Switching Operation of GIS power Substation

作者：Fubin Pang, Jianfei Ji, Zhanpeng Du, Chongqing Jiao · 发表于：2022 4th International Conference on Electrical Engineering and Control Technologies (CEECT) · 年份：2022 · DOI：10.1109/ceect55960.2022.10030155 · 被引用次数：2 · 研究领域：Lightning and Electromagnetic Phenomena、High-Voltage Power Transmission Systems、Power Systems and Technologies

With the rapid development of intelligent power substations, more and more secondary devices are installed nearby the high-voltage disconnector. The switch operations in gas-insulated switchgear (GIS) substation will generate very fast transient overvoltage (VFTO). The leakage of VFTO from the GIS pipeline shell will cause strong transient electromagnetic field nearby the GIS shell. The transient electromagnetic field may lead to maloperation, failure or even damage of the aforementioned secondary equipment. At present, there are many researches on the conducted electromagnetic disturbance induced on the ports of secondary equipment. However, the researches on the transient electromagnetic disturbance are few, especially in term of 3D full-wave simulation. In this paper, a 3D full wave model is built in the electromagnetic field software CST to simulate the very fast transient electromagnetic field resulted from the switching operation of GIS power substation. The steep wave power supply is used as the excitation source, and the time-varying resistance is used to simulate the switch operation process. The characteristics of spatial electromagnetic field disturbance, including the dominant frequencies, the peak, and the rise and duration time. It is shown that the spatial field is a damped oscillatory wave with oscillation frequency between 0.85 - 47.8 MHz and magnitude up to 706.9A/m. The effect of GIS pipeline length on the field characteristics is also investigated. The res...