Ultra-High-Speed Protection by Traveling Wave Current Polarity Comparison Based on Morphological Gradient

程临燕; 段建东; 张保会; 李鹏; 罗四倍

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Ultra-High-Speed Protection by Traveling Wave Current Polarity Comparison Based on Morphological Gradient

更新时间：2025-12-08

- Ultra-High-Speed Protection by Traveling Wave Current Polarity Comparison Based on Morphological Gradient
- Vol. 41, Issue 4, Pages: 484-488(2007)
- 作者机构：
  
  西安交通大学电气工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： F123.9;TM732
- Online First：10 April 2007，
  
  Published：2007
- 稿件说明：
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程临燕, 段建东, 张保会, et al. Ultra-High-Speed Protection by Traveling Wave Current Polarity Comparison Based on Morphological Gradient[J]. 2007, 41(4): 484-488.
DOI：

程临燕, 段建东, 张保会, et al. Ultra-High-Speed Protection by Traveling Wave Current Polarity Comparison Based on Morphological Gradient[J]. 2007, 41(4): 484-488. DOI：

摘要

将形态学的概念引入到电流行波比较式保护原理中

提出了基于形态学梯度变换的超高速电流行波极性比较式保护算法.算法具有运算量小、计算速度快的优点

并且由Clark变换产生1、2两种线模量

取形态学梯度变换后极大值较大的模量进行极性比较

因此对于任何一种故障类型都有较高的灵敏度

不存在故障类型引起的动作死区.ATP仿真测试表明

该算法可以用来实现超高速保护

基本上能够正确判别区内外故障

适应不同位置、不同过渡电阻、不同初始角及不同类型的故障情形.此外

还提出了电流行波相似度比较式线路保护方案

此方案不依赖于两端某一点的极性来判断区内外故障

而是通过比较线路两端一段时间内电流的相似度来区分区内外故障

因此可以明显提高判别故障位置的可靠性.

Abstract

Introducing the concept of morphology into the ultra-high-speed protection by traveling wave current polarity comparison

a highly efficient algorithm based on the morphological gradient(MG)is proposed. Undergoing the MG transform

the aerial mode with larger maximum is chosen to ensure the sensitivity for any fault type without dead zone. The ATP simulations show that the scheme for ultra-high-speed protection enables to correctly distinguish the internal and external faults

and is insensitive to fault locations

fault path resistances

fault inception angles and fault types. Furthermore

the protection scheme by traveling wave current similitude degree comparison

which is independent on the polarity of certain points of two ends

is presented to improve the discrimination reliability.

关键词

Keywords

references

段建东,张保会,张胜祥.利用线路暂态行波功率方向的分布式母线保护[J].中国电机工程学报,2004,24(6):7-12.

Duan Jiandong,Zhang Baohui,Zhang Shengxiang.A distribute bus protection using transient traveling wave power directions of transmission lines[J].Proceedings of the CSEE,2004,24(6):7-12.

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Dong Xingli,Dong Xinzhou,Zhang Yancang,et al.Directional protective relaying based on polarity comparison of travelling wave by using wavelet transform[J].Automation of Electric Power System,2000,24(14):11-15.

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唐常青.数学形态学方法及其应用[M].北京:科学出版社,1990.

Wu Q H, Zhang J F, Zhang D J.Ultra-high-speed directional protection of transmission lines using mathematical morphology [J].IEEE Trans on Power Delivery,2003,18(4):1127-1133.

林湘宁,刘沛,刘世明,等.电力系统超高速保护的形态学——小波综合滤波算法[J].中国电机工程学报,2002,22(9):19-24.

Lin Xiangning,Liu Pei,Liu Shiming,et al.A novel integrated morphology-wavelet filter algorithm used for ultra-high-speed protection of power system[J].Proceedings of the CSEE,2002,22(9):19-24.

周美立.相似学[M].北京:中国科学技术出版社,1993.

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