Considering the Multi-scenario Distribution Network Fault Recovery Strategy Under Extreme Events
摘要
Due to the frequent occurrence of various extreme events, the power equipment of the distribution network is greatly damaged, resulting in a wide range of long-term power supply interruption, which seriously affects the social production and life. Therefore, reasonable and effective fault recovery strategy is very important to improve the power supply reliability of distribution network. This paper comprehensively considers the power supply interruption of distribution network under extreme events, self-faults and maintenance, and puts forward a fault recovery strategy of distribution network considering multiple fault scenarios. The mathematical models of island division and network reconstruction strategy are established by using graph theory and DistFlow flow method respectively. According to different fault scenarios, the fault recovery strategy of “reconstruction before islanding” is proposed. Finally, combined with IEEE33 node example system, the proposed strategy is simulated and analyzed in different fault scenarios. Simulation results show that the proposed strategy is effective and practical.