title: A novel wide-area backup protection based on fault component current distribution and improved evidence theory.
abstract: In order to solve the problems of the existing wide-area backup protection (WABP) algorithms, the paper proposes a novel WABP algorithm based on the distribution characteristics of fault component current and improved Dempster/Shafer (D-S) evidence theory. When a fault occurs, slave substations transmit to master station the amplitudes of fault component currents of transmission lines which are the closest to fault element. Then master substation identifies suspicious faulty lines according to the distribution characteristics of fault component current. After that, the master substation will identify the actual faulty line with improved D-S evidence theory based on the action states of traditional protections and direction components of these suspicious faulty lines. The simulation examples based on IEEE 10-generator-39-bus system show that the proposed WABP algorithm has an excellent performance. The algorithm has low requirement of sampling synchronization, small wide-area communication flow, and high fault tolerance.
authors: State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China.
authors: Zhe
authors: Z
authors: Zhang
authors: State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China ; State Grid Jiangsu Electric Power Company, Electric Power Research Institute, 1 Power Avenue, Nanjing 211103, China.
authors: Xiangping
authors: X
authors: Kong
authors: State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan 430074, China.
authors: Xianggen
authors: X
authors: Yin
authors: State Grid Hubei Electric Power Company, 175 Xudong Street, Wuhan 430074, China.
authors: Zengli
authors: Z
authors: Yang
authors: State Grid Hubei Electric Power Company, 175 Xudong Street, Wuhan 430074, China.
authors: Lijun
authors: L
authors: Wang
mesh_terms: D000465:Algorithms; D019544:Equipment Failure Analysis; D008962:Models, Theoretical