Fault Location Algorithm Based on Improved Precise Integration

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Fault Location Algorithm Based on Improved Precise Integration

更新时间：2025-07-09

- Fault Location Algorithm Based on Improved Precise Integration
- Vol. 44, Issue 12, Pages: 61-65(2010)
- 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： TM77
- Online First：10 December 2010，
  
  Published：2010
- 稿件说明：
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Fault Location Algorithm Based on Improved Precise Integration[J]. 2010, 44(12): 61-65.
DOI：

Fault Location Algorithm Based on Improved Precise Integration[J]. 2010, 44(12): 61-65. DOI：

摘要

针对以往精细积分算法在计算暂态信号时误差较大、迭代结果容易发散的问题

通过使用一种新的差分格式对算法进行了改进

提高了算法的稳定性

增强了其对暂态信号的分析能力

并通过构造测距函数实现了基于暂态信号的输电线路故障定位.为使测距算法适用于双端数据异步的情况

利用故障前信号

提出了一种确定双端录波数据不同步时差和修正线路长度的算法

将其应用于三相输电线路的故障测距之中.算例仿真结果显示

采用该算法

故障定位精度绝对误差不超过0.6 km

最大相对误差为0.25%

且测距结果不受故障过渡电阻的影响

证明了算法的有效性.

Abstract

Aiming the traditional precise integration method with big error in calculating transient signal and dissipated iteration

a new difference scheme improving the stability of algorithm and enhancing the analysis ability to the transient signal is proposed to achieve transmission line fault location based on transient signals by constructing a distance function. To apply the scheme to the double-side asynchronous data

an algorithm is adopted to calculate the two-terminal asynchronous time difference and length of transmission line based on the pre-fault recorded signal

and to calculate the fault location for three-phase transmission line. The simulation results show that the higher measurement accuracy without affecting by the fault transition resistance is achieved

the absolute error for fault location gets lower than 0.6 km

and the relative error is only 0.25%.

关键词

Keywords

references

葛耀中. 新型继电保护与故障测距原理与技术[M]. 2版.西安:西安交通大学出版社,2007.

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CHEN Ping,XU Bingyin,GE Yaozhong,et al.A novel method for fault location of transmission lines using fault transient current travelling waves[J].Automation of Electric Power Systems,1999,23(14):29-32.

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XIN Bingsong,ZHAO Jinquan,YANG Shuanke, et al.A double-terminal fault location algorithm based on precise integration method[J].High Voltage Apparatus,2005,41(2):89-90.

张华中,王维庆,朱玲玲,等. 基于双端不同步数据的故障定位算法[J].华东电力,2009,37(1):116-119.

ZHANG Huazhong,WANG Weiqing,ZHU Lingling, et al.Fault location algorithms based on two-terminal unsynchronized data[J].East China Electric Power,2009,37(1):116-119.

张兆宁,毛鹏,孙雅明.电力系统故障暂态信号的小波奇异性检测[J].继电器,2000,28(4):24-27.

ZHANG Zhaoning,MAO Peng,SUN Yaming.Singularity detection of fault transient signals in power system with wavelet transform[J].Electric Relay,2000,28(4):24-27.

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