Establishment and Research on UHV GIS Lightning Wave Discharge Loop Model

摘要

The debugging of waveform parameters during lightning wave test of power equipment is the key link of equipment testing, which mainly relies on the experimental data to manually adjust the parameters of lightning wave test circuit to achieve currently, and the workload and difficulty of debugging are huge. In this paper, taking circuit breaker, bus pipeline and insulator in 1100 kV gas insulated substation (Gas Insulated Substation, GIS) as the test object, and the megavolt high-voltage power hall of Xiamen University of Technology as the test site, the lightning wave test platform of 3000 kV/300kJ is established on the former basis. The test platform is used to measure and calculate the parameters such as inductance and capacitance in the test loop. Based on the measured and calculated results, the lightning wave discharge circuit model is established. The comparison test and simulation results show that the simulation waveform of the simulation model of the lightning wave test circuit is basically the same as the test waveform, and the simulation error of the wave-front tail time is within 5%. The research’s results provide a reference for the design and optimization of the lightning wave test loop simulation model of UHV power equipment.