Research On Resilience Analysis Model Of Distribution Network And The Resilience Improvement Method

In recent years,human events and natural disasters have become frequent in the world.Although the probability of these disasters is not high,but these disasters can cause great loss.In order to reduce the loss caused by those disasters,it is necessary to improve the resistant ability,absorptive ability and restorative ability of distribution network.Hence,this dissertation builds the resilience analysis model of distribution network based on the existing research and the characteristics of distribution network and discusses the resilience improvement method with SNOP and customer resources.The main work is as follows.Firstly,this dissertation investigates the current research of distribution network resilience overseas and domestic.And summarizes the current research status of resilience improvement method combined with the characteristics of distribution network resilience.Secondly,this dissertation determines the quantization method of distribution network resilience based on the definition of distribution network resilience and the resilience process of distribution network.And builds the resilience analysis model of distribution network based on the calculation flow of distribution network resilience.Thirdly,considering the characteristics of disasters,a multi-stage spatiotemporal model of disasters is proposed.Fourthly,based on the function and principle of SNOP,this dissertation builds different SNOP optimal allocation under different application scenarios.Fifthly,this dissertation builds a robust optimal allocation model with customer resources based on the resilience improvement.Based on the allocation result,the indication system of the comprehensive decision making in customer resources are built,and the customer resources are chosen based on the multi-dimensional utility mergence method under different scenario.Finally,the validity of the models as well as the performance of the algorithm are verified by IEEE 33 distribution system.The results show that SNOP and customer resources can improve resilience of distribution network.