特高压直流输电系统接地极引线双端不平衡保护

LIU Xiaohui

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特高压直流输电系统接地极引线双端不平衡保护

更新时间：2025-08-13

- 特高压直流输电系统接地极引线双端不平衡保护
- Automation of Electric Power Systems Vol. 41, Issue 15, Pages: 150-154(2017)
- 作者机构：
  
  南京南瑞继保电气有限公司,江苏省,南京市,211102
- 作者简介：
- 基金信息：
- DOI：
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- Published：2017
- 稿件说明：
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LIU Xiaohui. [J]. Automation of electric power systems, 2017, 41(15): 150-154.
DOI：

LIU Xiaohui. [J]. Automation of electric power systems, 2017, 41(15): 150-154. DOI：

摘要

在目前工程中现有的接地极线不平衡保护和接地极线差动保护原理基础上分析并提出接地极引线双端不平衡保护。所提的双端不平衡保护原理，具有保护线路全长，识别引线断线和金属接地故障并能够计算出故障位置，不受过渡电阻的影响，以及定值整定简单等优点。采用EMTDC/PSCAD仿真验证了理论分析的正确性，最后采用实时数字仿真器(RTDS)仿真验证了所提保护动作策略的可行性。

Abstract

First of all

an analysis is made of the principle of unbalance and differential protection of electrode line prior to proposing the paper. The double end unbalance protection can protect the full length of the electrode line

distinguish between the open circuit and grounding fault

and calculate the fault distance

which is not affected by transition resistance

and the principle of setting values is simple. The EMTDC/PSCAD simulation software is adopted to verify the correctness of theoretical analysis. Finally

real-time digital simulator is used to verify the feasibility of the proposed protection action strategies.

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Related Institution

NARI Group Corporation(State Grid Electric Power Research Institute)

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