Fault location scheme for a multi-terminal transmission line based on current traveling waves

• Published in: International journal of electrical power & energy systems Vol. 53; pp. 367 - 374
• Main Authors: Zhu, Yongli, Fan, Xinqiao
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.12.2013; Elsevier
• Subjects: Applied sciences; Electrical engineering. Electrical power engineering; Exact sciences and technology; Fast intrinsic mode decomposition; Fault location; Multi-terminal transmission lines; Teager energy operator; Testing. Reliability. Quality control; Traveling waves; Fault location; Traveling waves; Fast intrinsic mode decomposition; Multi-terminal transmission lines; Teager energy operator; Averaging method; Travelling wave; Arrival time; Transmission line; Defect localization; Multiterminal networks; System simulation; Impedance; Defect detection
• ISSN: 0142-0615; 1879-3517
• DOI: 10.1016/j.ijepes.2013.05.004

•A fault location scheme for a multi-terminal transmission line using current traveling waves only is proposed.•FIMD and TEO are combined to detect the arrival time of initial fault current traveling wave.•Fault Distance Ratio Matrix and rules for identifying faulted sections are proposed.•Simulations demonstrate excellent performance of the proposed fault location scheme. As very little research on the fault location for multi-terminal transmission lines based on current traveling waves only has been done, a new fault location scheme on this is proposed. The proposed scheme is different from the traditional ones based on fundamental impedance. Fast Intrinsic Mode Decomposition (FIMD) and Teager Energy Operator (TEO) are combined (FIMD&TEO) to detect the arrival time of the traveling wave at each terminal. Fault Distance Ratio Matrix (FDRM) and rules for identifying faulted sections of a multi-terminal transmission line are proposed and the method for building FDRM is presented in this paper. After several couples of local and remote terminals connecting through the faulted section are got, their fault distances are calculated by means of a two-ended traveling wave method, and then the fault point can be located by averaging the fault distances. Many simulations under various fault conditions have been done, and the results show that the proposed scheme can locate faults more accurately than existing impedance-based methods.