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has been cited by the following article:

• TITLE: A New Principle of Fault Identification of on the Same Tower Based on Traveling Wave Reactive Powers

  AUTHORS: Hao Wu, Ruikai Ye, Xingxing Dong, Kunjian Yu, Zhengwei Chang

  KEYWORDS: Double-Circuit Transmission Line on the Same Tower, Traveling Wave Reactive Power, S-Transform, Fault Identification

  JOURNAL NAME: Journal of Power and Energy Engineering, Vol.7 No.7, July 30, 2019

  ABSTRACT: In order to improve the reliability of fault identification of the double-circuit transmission lines on the same tower, a new algorithm for fast protection of double-circuit transmission lines on the same tower based on the reactive powers of traveling wave is proposed. With the implementation of S-transform, the initial traveling wave reactive powers are calculated and the change characteristics of reactive power under different fault conditions are studied. The protection criterion is constructed by analyzing the ratio of the reactive powers of the same end on double-circuit transmission lines and the ratio of the reactive powers at both ends on the same line. According to the ratio of reactive power on the same side of the line and both ends of the same line, it is possible to identify whether the faults of the double-circuit line of the same tower occurred in or out of the protection zone. A large number of simulation results show that the protection performance is sensitive and reliable, and quick to respond. The criterion is simple and is basically not affected by fault initial angles, fault types, and transitional resistances.