相序不对应合环对继电保护的影响

WANG Youhuai

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相序不对应合环对继电保护的影响

更新时间：2025-08-13

- 相序不对应合环对继电保护的影响
- Automation of Electric Power Systems Vol. 37, Issue 18, Pages: 99-102(2013)
- 作者机构：
  
  湖北电力调度控制中心,湖北省,武汉市,430077
- 作者简介：
- 基金信息：
- DOI：
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- Published：2013
- 稿件说明：
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WANG Youhuai. [J]. Automation of electric power systems, 2013, 37(18): 99-102.
DOI：

WANG Youhuai. [J]. Automation of electric power systems, 2013, 37(18): 99-102. DOI：

摘要

核相是新建线路送电合环前的一项重要工作。输电线路相序不对应合环发生的概率虽小，但仍偶有发生，给电网安全稳定运行带来一定的危害。针对线路相序不对应合环这一特殊故障形态，提出了基于电压、电流相量图的相序不对应合环分析方法。通过对相序不对应合环故障下的电压、电流相量分析，指出相序不对应合环故障与系统正常运行或短路故障特征存在差异，并通过RTDS仿真验证了理论分析的正确性。最后，结合保护装置原理全面分析了相序不对应合环故障下继电保护装置的动作行为。

Abstract

It is an important task verifying the phase sequence of newly built power transmission lines prior to ring closing and going into operation.Despite the low probability of transmission lines ring closing with a wrong phase sequence，it does happen once in a while and bring definite harm to power system safe and stable operation.A method based on the voltage and current phasor diagram is proposed to analyze the special form of fault of ring closing with a wrong phase sequence.The characteristics of ring closing with a wrong phase sequence are different from those of normal operation or short circuit fault.And the method is proved correct through RTDS simulation.Finally，the operation of protective relays is discussed according to the specific models and principles of protective relays under the fault of transmission lines ring closing with a wrong phase sequence.

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Related Institution

Faculty of Electric Power Engineering, Kunming University of Science and Technology

Yunnan Grid Research Construction and Planning Center of Yunnan Power Grid Co., Ltd.

School of Electrical Engineering and Automation, Harbin Institute of Technology

State Grid Electric Power Research Institute (NARI Group Corporation)

State Key Laboratory of Power Transmission Equipment & System Security and New Technology(Chongqing University)

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