输电线路双端测距优化算法研究
Optimization Algorithm for Two-Terminal Fault Location on Power Transmission Line
张澄 1刘宏君 2印吉景1
作者信息
- 1. 国网泰州供电公司,江苏泰州225300
- 2. 长园深瑞继保自动化有限公司,广东深圳518057
- 折叠
摘要
基于输电线路的分布式参数模型,采用两端的电气量进行测距计算,提出了双端测距优化算法和改进措施.该算法详细分析了故障时线路各点电压与电流的关系,利用接地电阻阻性特征确定故障位置,不受线路负荷、系统阻抗和过渡电阻的影响,且具有较高精度.同时针对分段参数导线和测量回路精度带来的误差,提出了改进措施,完善了测距方案.
Abstract
This paper presents the two-terminal fault location optimization algorithm and improvement measures based on the distributed parameter model and the calculation for ranging for two terminal electrical quantities.This algorithm makes a detailed analysis on the relation for each point between its voltage and current in case of a line fault.Meanwhile,this method also utilizes the resistive characteristic of grounding resistance to identify the fault location in higher accuracy without the interference of line load,system impedance and transition resistance.According to the errors of the distributed-parameter wires and circuit measuring,it puts forward the improvement measures,and enhances the fault location scheme.
关键词
差动保护/双端测距/分段参数/优化算法Key words
differential protection/two-terminal fault location/distributed parameter/optimization algorithm引用本文复制引用
出版年
2014
NETL
NSTL
维普
万方数据