Accurate fault location of complex distribution network with distributed generators. Issue 13 (12th December 2017)

• Record Type: Journal Article
• Authors: Li, Weijian; Guo, Chuangxin; Jin, Yu; Gong, Xiao
• Is Part Of: Journal of engineering. Volume 2017:Issue 13(2017)
• Page Start: 1901
• Page End: 1905
• Publication Date: 2017-12-12
• Subjects: power supply quality -- fault currents -- distributed power generation -- impedance matrix -- distribution networks -- fault location -- power distribution faults; voltage sag information -- distributed power source -- fault current vector -- node impedance matrix -- voltage vector -- distributed power supply access point -- faulted node -- fault current deviation values -- actual complex distribution network -- distributed generators -- fault location method; Engineering -- Periodicals; Engineering; Electronic journals; Periodicals; 620.005
• DOI: 10.1049/joe.2017.0661
• Languages: English
• ISSNs: 2051-3305

Abstract

Abstract : For the complex distribution network with lots of branches and distributed power supply, a fault location method based on voltage sag information is proposed. First, the equivalent model is established for the distributed power source. Then the fault current vector is obtained by using the node impedance matrix and the voltage vector recorded by the distributed power supply access point before and during the fault. Finally, the faulted node is determined by comparing fault current deviation values. Through the simulation analysis of an actual complex distribution network, the validity and efficiency of the proposed method is verified, and the influence of load fluctuation and transition resistance is small.