CHEN Chun,WU Yitong,LI Meng,et al.Method for Fast Recovery from Distribution Network Fault Based on Directed Traversal of Network Topology[J].Automation of Electric Power Systems,2021,45(7):44-52.
CHEN Chun,WU Yitong,LI Meng,et al.Method for Fast Recovery from Distribution Network Fault Based on Directed Traversal of Network Topology[J].Automation of Electric Power Systems,2021,45(7):44-52. DOI: 10.7500/AEPS20200803004.
Method for Fast Recovery from Distribution Network Fault Based on Directed Traversal of Network Topology
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.
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