故障测距中的参数误差归算修正算法

作者：陈明军1，尤中璞2，黄飞腾1 日期：2010-06-28/span> 浏览：3508 查看PDF文档

故障测距中的参数误差归算修正算法
陈明军1，尤中璞2，黄飞腾1
（1.浙江工业大学 信息工程学院，浙江 杭州 310014; 2.象山县供电局,浙江 象山 315700）

摘要：在输电线路故障测距中，线路参数变化或其他参数误差都会对测距精度有较大的影响。针对基于分布参数模型的双端不同步数据故障测距问题，提出了一种参数误差归算修正算法。该算法将各类参数误差归算为单位长度线路参数的变化，利用故障前电压/电流数据，计算出归算系数，反馈修正系统模型。Matlab仿真表明，该算法能有效地减少各类参数误差的影响，提高了故障测距的抗干扰能力和故障测距精度。
关键词：故障测距；参数误差；归算系数；抗干扰能力
中图分类号：TM711文献标识码：A文章编号：1001-4551(2010)04-0104-04

Parameter errors converting and correcting algorithm for fault location

CHEN Mingjun1, YOU Zhongpu 1, HUANG Feiteng1
（1. College of Information Engineering, Zhejiang University of Technology, Hangzhou 310014, China;
2. Xiangshan County Supply Power Company, Xiangshan 315700, China)

Abstract: In the transmission line fault location, transmission line parameters changes or other parameter errors impact greatly on the accuracy of fault location. For fault location of the twoterminal nonsynchronous data based on distribution parameters model, a parameter errors converting and correcting algorithm was presented. The different parameter errors were converted to unit length parameter changes of the transmission line. Using the twoterminal data of voltage and current before fault time, the convert coefficient was calculated. Then system model was feedback amended. Matlab simulation result shows that this algorithm can effectively reduce the various parameter errors impact, improve antijamming capability and accuracy of fault location.
Key words: fault location; parameter errors; convert coefficient; antijamming capability