Research On Optimal Dispatching Method Of Active Distribution Network Based On Microgrid Interaction

The development and utilization of distributed energy has gradually become an important direction of research in various countries.Especially in the power industry,traditional power systems have been unable to meet the increasing power demand of power users.In this circumstances,a large number of distributed generation,flexible loads and energy storage are connected to the power system,forming a multi-microgrid structure,which brings unlimited opportunities to the power system and also brings certain challenges.Microgrid is an effective form of integrating distributed generation,flexible loads and energy storage in power systems.Microgrid technology can achieve efficient use of distributed energy,improve the reliability of active distribution networks,and improve the quality of power.Research on microgrids has also gradually increased.However,the uncertainty and increasing penetration of distributed power sources have reduced the dispatching security of active distribution networks,and the increasing flexible loads and energy storage also have a certain degree of dispatchability.So,traditional dispatching methods cannot fully exploit the dispatching potential in active distribution network.With the development of the active distribution network,the communication network also urgently needs to make technical changes to adapt to the dramatic increase in dispatching subjects.Therefore,research on the optimal dispatching method in active distribution network has gradually become a research hotspot.This paper conducts research on the optimal dispatching problem of the active distribution network.The purpose is to use the source-grid-load interaction to rationally arrange the dispatching plan,improve the economics and safety of the active distribution network,promote the consumption of renewable energy,and improve the satisfaction of users.Firstly,the article analyzes the structure of the active distribution network,conducts research from the physical level and the transaction level,layers power dispatching,and formulates an inter-layer electricity price formation method and an energy storage action mechanism.It adjusts the trading relationship between distribution network and microgrids,and between microgrid and microgrid through market means to form the optimal dispatch method.Secondly,the article builds an active distribution network dispatching framework under the concept of So S,and describes the interactive process in the active distribution network.Thirdly,the communication model of power dispatch is established,an optimization method is proposed when communication errors occur,and an optimal scheduling model is established.Finally,the simulation verification of the proposed dispatching model is proved respectively,and it is proved that the proposed dispatching model can reasonably solve the problems of dispatching and the feasibility of the dispatching strategy is verified.