大串补度输电线路的电流差动保护分析与对策

TANG Cui

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大串补度输电线路的电流差动保护分析与对策

更新时间：2025-08-13

- 大串补度输电线路的电流差动保护分析与对策
- Automation of Electric Power Systems Vol. 39, Issue 7, Pages: 157-163(2015)
- 作者机构：
  
  强电磁工程与新技术国家重点实验室, 华中科技大学,湖北省,武汉市,430074
- 作者简介：
- 基金信息：
- DOI：
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- Published：2015
- 稿件说明：
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TANG Cui. [J]. Automation of electric power systems, 2015, 39(7): 157-163.
DOI：

TANG Cui. [J]. Automation of electric power systems, 2015, 39(7): 157-163. DOI：

摘要

串联电容补偿技术是超高压及特高压远距离输电中的关键技术之一。随着串联补偿装置的广泛应用和电网的快速发展，有可能出现大串补度输电线路的情况，这将对输电线路继电保护甚至是主保护的动作性能产生影响。文中结合工程实际，对大串补度输电线路的电流差动保护动作特性进行了研究，并分析了过渡电阻、系统的运行方式及功角变化对电流差动保护的影响。根据仿真结果，对提高电流差动保护的灵敏度提出了相应的改进措施。

Abstract

Series capacitor compensation technology is one of the key technologies in EHV and UHV long distance transmission. With wide application of the series compensation device and rapid development of the power grid

transmission lines with high series compensation degree may well appear which will affect the protection of transmission lines and even the main protection performance. The operation characteristics of the main protection are studied by referring to engineering practice

and the influence of the transition resistance

system operation mode and power angle on the current differential protection is analyzed. According to the simulation results

countermeasures for improving the sensitivity of differential current protection are presented. This work is supported by National Natural Science Foundation of China (No. 51177058

No. 51277084).

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Time-domain Waveform Based Adaptive Current Differential Protection for Active Distribution Networks

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