基于GIS系统的配电网线路重载、过载位置定位方法研究

Research on the Positioning Method of Overload and Heavy Load Distribution Lines Based on GIS System

针对配电网线路过载问题,本文提出了一种精准定位线路重载、过载位置的新方法。首先在GIS系统上通过潮流计算找出重载、过载线路,然后利用拓扑结构细化线路模型从而得到准确的线路网架,最后利用支路电流法确定通流瓶颈的具体位置,并分析负荷及线路截面情况。结果表明,相比于传统线路过载查找方法和人工经验判断方法,所提方法利用信息化手段,可以快速掌握电网运行情况,准确定位线路重载、过载位置,为配电网规划、线路改造等工作提供指导意见。

Aimed at overload problem of distribution lines,an accurate positioning method of overload and heavy load lines is proposed.Firstly,the heavy load and overload lines are found by power flow calculation in GIS system;then the line model is refined according to the topological structure to obtain the accurate line grid.Finally,the branch current method is used to determine the specific location of the flow bottleneck and to analyze the load and the section of the line.The results show that compared with the traditional overload lines locating methods and the artificial experience judgment methods,the proposed method can quickly grasp the situation of power grid operation by using information technology and accurately locate the heavy load and overload lines,which can provide guidance to the work such as the distribution network planning and the line modification.