Abstract
This paper introduces the basic principle of high voltage switchgear discharge, expounds several common discharge types, and studies the precise localization of partial discharge of high voltage switchgear based on hyperboloid positioning method and space grid search method. The simulation test of the diagnostic process is used to test the feasibility of the above method. On the basis of precise positioning of the power supply, the local discharge power supply is simplified to a Gaussian current source, and the pulse parameters are calculated by the combination of the simulated annealing algorithm and the fdtd method. Evaluation. Simulation results show that the method of using multiple sensor measurements can accurately evaluate the equivalent pulse width τ and equivalent current amplitude i0 of the simulated Gaussian pulse.
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