含分布式电源的配电网健康评价研究

Research on health evaluation of distribution network with distributed generation

针对国内健康指数的研究多停留在对单个设备或辐射型配电网,分布式发电会使得配电网结构越来越复杂,对含有分布式发电装置以及环网的配电网进行的健康评价,对保障电网的正常运行具有重要意义等现状,提出一种对复杂配电网系统进行健康诊断的方法。将复杂配电网中的元件按照其在电网中的位置,分为3类,分别按其停电范围进行划分,并将复杂拓扑拆分成若干小型辐射网,再利用辐射网的健康指数计算方法进行计算,最终得出网络总体的健康状况。对长阳县部分配电网局部元件以及整网劣化的不同情况,进行MATLAB仿真。结果表明,该方法为复杂配电系统网络整体健康性能量化提供了一种可行方案。

In view of the fact that the research on the domestic health index mostly focuses on the single equipment or radial distribution network,the distributed generations will make the structure of distribution network more and more complex.The health evaluation of distribution network with distributed generation devices and ring network is of great significance to ensure the normal operation of power grids.A health diagnosis method for complex distribution network systems is proposed.The components in complex distribution network are divided into three categories according to their positions in the power grid.They are divided into three categories according to their blackouts,and the complex topology is divided into several small radiation networks.Then the health index calculation method of radiation network is used to calculate the overall health status of the network.The results of MATLAB simulation show that this method can provide a feasible scheme for quantifying the overall health performance of complex distribution networks.