Partial discharge diagnosis method of gas insulated transmission line based on vibration signal
CHEN Xuan1, WANG Lixian2, ZHU Chao1, MA Hongzhong2
1. Maintenance Branch Company, State Grid Jiangsu Electric Power Co., Ltd, Nanjing 211102; 2. College of Energy and Electrical Engineering, Hohai University, Nanjing 211100
Abstract:In order to identify and diagnose partial discharge defects in gas insulated transmission line (GIL), a partial discharge defect diagnosis method based on 1.5D energy spectrum and particle swarm optimization-extreme learning machine (PSO-ELM) is proposed. By calculating the 1.5D energy spectrum of GIL abnormal vibration signal caused by partial discharge, the energy fluctuation characteristics of GIL abnormal vibration caused by different types of discharge are obtained. Secondly, the PSO-ELM model is constructed, and the 1.5D energy spectrum is used as the feature to identify and diagnose the partial discharge fault of GIL. Finally, through the comparison of different methods, the advantage of the proposed method is verified, which provides the basis for the safe and stable operation of GIL in the power transmission and distribution system.
陈轩, 王立宪, 朱超, 马宏忠. 基于振动信号的气体绝缘金属封闭输电线路局部放电诊断方法[J]. 电气技术, 2021, 22(12): 34-39.
CHEN Xuan, WANG Lixian, ZHU Chao, MA Hongzhong. Partial discharge diagnosis method of gas insulated transmission line based on vibration signal. Electrical Engineering, 2021, 22(12): 34-39.