电工技术学报2018，Vol.33Issue(11)：2468-2478,11.DOI:10.19595/j.cnki.1000-6753.tces.170463
混压同塔四回输电线路零序参数测量方法
An Approach for Measuring the Zero Sequence Parameters of Mix-
Voltage Quadruple-Circuit Transmission Lines on One Tower
倪识远 1胡志坚 1杨安琪 1傅晨宇1
作者信息
- 1. 武汉大学电气工程学院 武汉 430072
- 折叠
摘要
Abstract
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.关键词
混压同塔四回线路/零序参数/分布参数模型/同步测量Key words
Mix-voltage quadruple-circuit transmission lines on one tower/zero sequence parameters/distributed parameter model/synchronous measurement分类
信息技术与安全科学引用本文复制引用
倪识远,胡志坚,杨安琪,傅晨宇..混压同塔四回输电线路零序参数测量方法[J].电工技术学报,2018,33(11):2468-2478,11.
