许光,刘漫雨,王兴念,杨乔,秦卫东.基于多信息融合的自适应单相接地故障在线定位研究与应用[J].电测与仪表,2019,56(12):64-72. Xu Guang,Liu Manyu,WANG Xingnian,Yang Qiao,Qin Weidong.Research and Application of Adaptive Single Phase Ground Fault Online Locating Based on Multi-Information Fusion[J].Electrical Measurement & Instrumentation,2019,56(12):64-72.
基于多信息融合的自适应单相接地故障在线定位研究与应用
Research and Application of Adaptive Single Phase Ground Fault Online Locating Based on Multi-Information Fusion
In order to meet all kinds of distribution terminal, fault indicator fault information and fault recorder file connected to the main station of distribution automation, the single-phase ground fault location based on distribution automation master station is realized. Based on the characteristics of single phase grounding fault in distribution network, the four types single phase grounding faults characteristics about the zero sequence current correlation coefficient, the phase correlation coefficient of three phase current mutation, Energy moment in characteristic frequency band and relative information entropy based on the generalized S transformation are extracted. Based on the main power distribution station, the fuzzy C-means clustering method is used to fuse four kinds of fault features to solve the misjudgment caused by a single fault criterion and improve the correctness of online location. The simulation results show that the on-line positioning strategy based on the distribution automation master station is suitable for various wiring modes and various working conditions, and the positioning accuracy and reliability are high.
