Resilience assessment and recovery of distribution network considering the influence of communication network

Abstract

Aiming at the existing research ignoring the influence of communication network (CN) on resilience recovery strategy and evaluation of distribution network (DN), this paper will discuss the impact of communication network state on resilience recovery and construct corresponding quantitative evaluation indexes. Firstly, a comprehensive importance evaluation index is constructed for communication failures to determine the order of communication restoration in the failure area. Then the emergency communication recovery in the fault area is carried out by using 5G micro base station. Second, a quantitative evaluation index of the impact of communication on distribution network status recovery is established, considering the fluctuation of distributed power output and load. At the same time, thermal rating constraints are considered in load transfer and island formation, and the effects of static and dynamic thermal rating (DTR) on load recovery are compared. Considering the influence of emergency resource warehouse location on repair time during fault repair, the location of the resource warehouse is determined through spectral clustering to improve repair efficiency. At the same time, the average headway time is introduced to quantify the impact of extreme weather on traffic, modify the road resistance model, and then use the minimum road method to establish an emergency recovery strategy that considers the effects of extreme weather. The IEEE-123 node system is used as an example to verify the rationality of the resilience recovery strategy and the resilience assessment with communication impact.