Analysis of the effect on induced voltage initiate by insulated ground wire transposition in double-circuit transmission line on the same tower

• Published in: 2016 IEEE International Conference on High Voltage Engineering and Application (ICHVE) pp. 1 - 8
• Main Authors: Fang Yuqun, Qian Liqun, Hu Taishan, Zhang Bo, Xu Dongze
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.09.2016
• Subjects: Conductors; Force; ground wire transposition; inductive voltage; Insulated ground wire; Limiting; phase sequence array; Poles and towers; Power transmission lines; Voltage measurement; Wires
• DOI: 10.1109/ICHVE.2016.7800799

In order to study the effect on Induced voltage initiate by ground wire transposition in the same tower double circuit transmission line, we attempted to analyze the formation mechanism of ground wire induction voltage. Simulation models of typical 500kV double-circuit transmission line are established by ATP-EMTP software and calculations of induce voltage on ground wires are performed with different phase sequence array. The results show that, the restriction by ground wire transposition is mainly caused by the phase difference of inductive electromotive forces in the two ground wires. The restriction effect is better when phase difference is greater, and the best effect to reduce inductive voltage is adopting reverse phase sequence which the inductive electromotive forces in two sides of ground wire are almost inverse. Due to the inductive electromotive forces in ground wire transposition points are not totally inverse, the effect is not multiple while continuous and multiple transposition were made.