首页|110kV架空输电线路雷击故障定位研究

110kV架空输电线路雷击故障定位研究

扫码查看
随着电网建设的蓬勃发展,人们对供电可靠性的要求也不断增加.而雷击作为影响系统安全运行的重要因素之一,对生产生活造成了巨大影响.为此,针对传统双端法在雷击故障定位方面上的不足,提出一种基于雷击故障特性的架空输电线路雷击故障定位新方法.首先,根据检测装置在检测点获取得到的故障行波电流、极性以及其他相关信息,以确定折反射波起点以及可能受到影响的雷击范围;其次,根据所获得的信息,利用小波变换原理精确地确定波峰位置;最后,选取合适的雷击故障范围公式,以精确地定位雷击故障点.所提方法经仿真结果验证,雷击故障定位成功率大于99.7%.所提方法故障定位成功率得到了有效提升,对减少故障定位时间和电源的快速恢复具有重要意义.
Research on Lightning Fault Location of 110kV Overhead Transmission Lines
With the vigorous development of power grid construction,people's requirements for power supply relia-bility are also increasing.As one of the important factors affecting the safe operation of the system,lightning strikes have a significant impact on production and life.Therefore,aiming at the deficiency of traditional two-terminal meth-od in lightning strike fault location,this paper proposes a new lightning strike fault location method for overhead transmission lines based on lightning strike fault characteristics.Firstly,the fault traveling wave current,polarity and other relevant information obtained by the detection device at the detection point are used to determine the origin of the refraction wave and the range of lightning strike that may be affected.Secondly,according to the obtained infor-mation,the wavelet transform principle is used to accurately determine the position of the wave crest.Finally,the proper formula of lightning strike fault range is selected to accurately locate the lightning strike fault point.Simulation results show that the success rate of lightning strike fault location is greater than 99.7%.The suc-cess rate of fault location is improved effectively by the proposed method,which is of great significance to reduce the time of fault location and the rapid recovery of power supply.

overhead transmission linesfault locationwavelet transformdouble ended method

付雨

展开 >

国网湖北省电力有限公司襄阳供电公司,湖北 襄阳 441000

架空输电线路 故障定位 小波变换 双端法

2024

电气开关
沈阳电气传动研究所

电气开关

影响因子:0.281
ISSN:1004-289X
年,卷(期):2024.62(3)