摘要 配电网故障恢复是配电网自动化最重要的功能之一,旨在快速且最大化恢复非故障失电区。为此,提出一种基于网络拓扑有向遍历的配电网故障恢复方法,利用网络拓扑分层划分特定网络的自愈单元组,再根据自愈单元的基本环路矩阵确定非故障失电区范围和复电方式。对于可通过网络重构恢复的情况,先利用启发式规则闭合满足条件的联络开关恢复非故障失电区供电,再通过网络分层判断各层支路的载流情况,交换最小自愈单元内所有满足条件的联络开关与分段开关状态,若依然存在线路过载则对非故障失电区进行切负荷操作。以84节点系统作为算例对该方法的有效性进行验证,结果表明该方法较现有主流故障恢复算法耗时更少且开关动作次数更少。 The fault recovery of distribution networks is one of the most important functions of distribution network automation,which aims to realize the fast and maximal recovery of non-faulty out-of-service areas.Therefore,a recovery method for distribution network fault based on topology directed traversal is proposed.The method uses the network topology to hierarchically divide the specific network into the self-healing unit groups,and then determines the coverage of the non-faulty out-of-service areas and the power recovery method by the basic-loop matrix of the self-healing unit.For the case that can be restored through network reconfiguration,the heuristic rules are firstly used to close the tie switch that meets the conditions for restoring the power supply of the non-faulty out-of-service areas,and then the current-carrying situation of each layer of the branch is judged through network layering.The status of all the tie switches and section switches that meet the conditions in the minimum self-healing unit should be exchanged.If the branch overload still exists,the load shedding operations on the non-faulty out-of-service areas will be performed.An 84-node system is used as an example to verify the effectiveness of the method.The results show that the method consumes less time and has fewer switching operations than the existing mainstream fault recovery algorithms.
出处 《电力系统自动化》 EI CSCD 北大核心 2021年第7期44-52,共9页 Automation of Electric Power Systems
基金 国家重点研发计划政府间国际科技创新合作重点专项资助项目(2018YFE0125300) 国家自然科学基金资助项目(52007009)。
关键词 网络拓扑分层 最小自愈单元 有向遍历 启发式规则 网络重构 network topology layering minimum self-healing unit directed traversal heuristic rules network reconfiguration
