An Approach for Measuring the Zero Sequence Parameters of Mix-Voltage Quadruple-Circuit Transmission Lines on One Tower

被引：0
|
作者：
Ni S. [1 ]
Hu Z. [1 ]
Yang A. [1 ]
Fu C. [1 ]
机构：
[1] School of Electrical Engineering, Wuhan University, Wuhan
来源：
Hu, Zhijian (zhijian_hu@163.com) | 2018年 / China Machine Press卷 / 33期
关键词：
distributed parameter model; Mix-voltage quadruple-circuit transmission lines on one tower; synchronous measurement; zero sequence parameters;
D O I：
10.19595/j.cnki.1000-6753.tces.170463
中图分类号：
学科分类号：
摘要：
The electromagnetic coupling of mix-voltage quadruple-circuit transmission lines is complex which leads many zero sequence parameters needed to be measured. The existing methods can’t accurately measure these parameters. A method to accurately measure the zero sequence parameters of mix-voltage quadruple-circuit transmission lines was proposed. The distributed parameter model of the mix-voltage quadruple-circuit transmission lines was established. The transmission matrix which was related with these zero sequence parameters was obtained by solving transmission equations. The synchronous voltage and current data measured at the two ends of the four circuits and the transmission matrix were employed. And the calculation method of 18 zero sequence parameters was derived. Induced voltage interference was considered and an incremental method was put forward to eliminate it. PSCAD was employed to verify the proposed measurement method. The simulation results show that the proposed method overcomes the distribution effect of long distance transmission lines. The measurement model of the existing method was modified. The problem that the distributed parameter model of the existing method is not accurate enough was solved. The proposed method was hardly affected by the initial theoretical values and can apply to quadruple-circuit transmission lines with any voltage classes. The measurement procedure is simple and the proposed method can be used in the transmission lines which are completely or partly out of service. © 2018, Electrical Technology Press Co. Ltd. All right reserved.
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页码：2468 / 2478
页数：10
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