New fault line selection scheme for four-circuit transmission lines on same tower

被引：0
|
作者：
Yu Z. [1 ]
Bi J. [1 ]
Guo P. [2 ]
Wang X. [1 ]
Chen Q. [2 ]
机构：
[1] School of Electrical Engineering Automation, Jiangxi University of Science and Technology, Ganzhou
[2] Guodian Nanjing Automation Co., Ltd., Nanjing
来源：
Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2019年 / 39卷 / 11期
关键词：
Fault line selection; Four-circuit lines on same tower; Parameter asymmetry; Phase-mode transformation; Simulation;
D O I：
10.16081/j.epae.201909026
中图分类号：
学科分类号：
摘要：
Starting with the four-circuit transmission lines on same tower with parameter asymmetry, combined with the characteristics of interline and interphase electromagnetic coupling in the four-circuit transmission lines, a suitable phase-mode transformation matrix is derived to decouple the impedance of each circuit line. The correctness of the decoupling method is proved by simulation and comparison. Based on the relationship between the decoupled independent modules, four parameters, i.e. K1, K2, K3 and K4 are defined. According to the different values of these four parameters in different circuit faults, a new fault line selection criterion is constructed. A large number of simulative data on PSCAD/EMTDC show that the proposed fault line selection scheme is fast, simple, reliable and unaffected by fault distance, transition resistance, load current and system operation mode. © 2019, Electric Power Automation Equipment Press. All right reserved.
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页码：127 / 132
页数：5
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