中国电力 ›› 2016, Vol. 49 ›› Issue (8): 59-63.DOI: 10.11930/j.issn.1004-9649.2016.08.059.05

• 电网 • 上一篇    下一篇

基于电流计算的同杆双回线故障测距算法研究

丁建忠,鲍有理,李澄   

  1. 无锡供电公司,江苏 无锡 214061
  • 收稿日期:2016-03-30 修回日期:2016-08-12 出版日期:2016-08-10 发布日期:2016-08-12
  • 作者简介:丁建忠(1969—),男,江苏丹阳人,高级工程师,从事电网运行检修管理工作。

Fault Location Algorithm Based on Current Calculation for Parallel Transmission Lines on Same Tower

DING Jianzhong, BAO Youli, LI Cheng   

  1. Wuxi Power Supply Company, Wuxi 214061, China
  • Received:2016-03-30 Revised:2016-08-12 Online:2016-08-10 Published:2016-08-12

摘要: 针对当前双回线故障测距研究匮乏,且易受故障类型约束的弊端,提出了基于电流计算的同杆双回线故障测距算法。该算法不受单回线、跨线故障约束,基于线路的分布参数π型等值电路模型,利用两端电流求解实现测距,测距方程简单易解,不易受系统运行方式和两侧系统参数的影响。PSCAD故障仿真和Matlab数值计算结果表明,提出的新算法可靠实用,具有优良的测距精度,基本不受过渡电阻和故障类型的影响,适用性强。

关键词: 分布参数, 双回线, 电流, 故障测距

Abstract: Fault location on double circuit transmission circuit is easily impacted by fault type and not well researched. A fault location method based on current calculation is proposed. The proposed method can be used in both single loop and cross line fault type. Based on distributed parameter PI model of PI equivalent circuit, the proposed method utilizes current on both terminals to locate fault. The fault location equation is simple and easily solvable with less impact on system operation mode and system parameters. PSCAD fault simulation and Matlab numerical results show that the proposed algorithm is reliable, practical and accurate. It is not easily affected by transition resistance and fault types.

Key words: distributed parameters, parallel transmission lines, current, fault location

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