基于网络树状图的低压配电网故障研判仿真分析

智能化设备在低压配电网中的普及,为实现低压配电网故障的实时研判与主动抢修提供了新的研究方向.首先分析故障研判的信息来源及其校验方法,利用树状图描述低压台区的拓扑结构,并以此为基础提出主动故障研判的流程.然后运用模糊集理论分析部分设备运行状态信息缺失时的故障研判.最后基于PSCAD搭建涵盖中压馈线、低压配变、低压分支箱、...

Simulation analysis of low-voltage distribution network fault diagnosis based on tree structure diagram

The popularization of intelligent equipment in the low-voltage distribution network provides a new research direction for real-time diagnosis and initiative rush repair of low-voltage distribution network faults. First, the information source of fault diagnosis and verification method are analyzed. Secondly, tree structure diagram is used to describe the topological structure of the low-voltage courts. And an active fault diagnosis process is proposed. Then, the fuzzy set theory is used when some equipment running state information is missing. Finally, based on PSCAD, the simulation model including the key links such as medium-voltage feeder, low-voltage distribution transformer, low-voltage branch box and end-user is built. The control module is designed according to the research process, and the feasibility and effectiveness of the scheme are verified through simulation results.This work is supported by the Science and Technology Project of State Grid Corporation of China (No. KJ19-1-11).