Research on Electromagnetic Propagation of Partial Discharge for Electrical Equipment Using Huygens Principle
Yang Qi1, Yang Fan1, Gao Bing1, Huang Xin1, Yu Peng2
1. State Key Laboratory of Power Transmission Equipment & System Security and New Technology Chongqing University Chongqing 400044 China; 2. Shenzhen Power Supply Bureau Co. Ltd Shenzhen 518000 China
Abstract：To solve the problems of low computational efficiency and the large memory consumption caused by the incomparable size of partial discharge (PD) source with equipment in mesh generation, a numerical calculation method for electromagnetic propagation of PD in electrical equipment based on Huygens principle is presented in this paper. The first step is to refine the near-field space of the enclosed discharge source and the closed outer surface electromagnetic field is calculated. In the second step, the electromagnetic field data is imported into the target domain as an equivalent source for calculation. As the mesh size of the target space is greatly increased by using the equivalent source, the propagation characteristics of the electromagnetic field in the passive region can be quickly obtained. To verify the accuracy and efficiency of the proposed method, the electromagnetic propagation of PD in free space is taken as an example. In the end, by calculating the electromagnetic propagation of PD in a large-scale and complex dry-type transformer, the peak memory consumption based on Huygens principle is reduced to 35.45% and the computing efficiency is increased by 61.68 times. The calculation method of Huygens principle provides a method for calculating the electromagnetic propagation of PD in large-scale electrical equipment.
杨旗, 杨帆, 高兵, 黄鑫, 余鹏. 基于惠更斯原理的电气设备局部放电电磁传播计算方法[J]. 电工技术学报, 2019, 34(21): 4419-4427.
Yang Qi, Yang Fan, Gao Bing, Huang Xin, Yu Peng. Research on Electromagnetic Propagation of Partial Discharge for Electrical Equipment Using Huygens Principle. Transactions of China Electrotechnical Society, 2019, 34(21): 4419-4427.
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2019, Vol. 34 
