高压输电线路直流融冰装置故障特性及过流保护

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高压输电线路直流融冰装置故障特性及过流保护

更新时间：2025-08-13

- 高压输电线路直流融冰装置故障特性及过流保护
- Automation of Electric Power Systems Vol. 40, Issue 13, Pages: 100-106(2016)
- 作者机构：
  
  智能电网教育部重点实验室(天津大学),天津市,300072
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2016
- 稿件说明：
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LI Bin. [J]. Automation of electric power systems, 2016, 40(13): 100-106.
DOI：

LI Bin. [J]. Automation of electric power systems, 2016, 40(13): 100-106. DOI：

摘要

直流融冰是解决高压和超高压输电线路覆冰问题的关键技术手段

而直流融冰装置的保护原理及方案是保障融冰线路和系统安全可靠运行的关键技术支撑。文中介绍了直流融冰系统及其保护配置

分析换流器过流保护在选择性上存在的不足。通过对直流融冰装置中换流变及换流器等各处短路故障特性的深入分析

提出了一种新型的过电流保护判定逻辑及动作策略

使过电流保护区分不同位置的故障并提高了动作可靠性。利用PSCAD/EMTDC仿真软件对各类故障进行仿真测试

并验证了新型保护策略的可行性。

Abstract

DC de-icing technology is the key technology for solving ice-cladding problems of high voltage and extra high voltage transmission lines. The protection principles and scheme of DC de-icer is the key technology of ensuring safe and reliable operation of the ice-clad transmission lines and system. The DC de-icing system and its protection configuration is described. The inadequacy of the selectivity of overcurrent protection are pointed out. Based on an in-depth analysis of the fault characteristics of the converter and the converter transformer of the DC de-icer

a new measure to ensure the reliability and selectivity of the overcurrent protection for DC de-icer is proposed. PSCAD/EMTDC simulation software is used to simulate and test all kinds of faults

which has verified the validity and correctness of the new protection strategy. This work is supported by National Natural Science Foundation of China for Excellent Young Scholars(No. 51422703).

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