Modeling And Analysis Of Multi-Game Relationship Under Active Distribution Network

In order to contain large-scale distributed power and meet the demand of customers for high-reliable power supply with limited resources,an intelligent and efficient power distribution system--active distribution network,is proposed.Active distribution network solve the uncertainties caused by multiple factors such as distributed power supply,energy storage equipment and customers' two-way load.Active distribution network also neefd to coordinate the resources of supply side and demand side to realize the safe and stable operation of distribution network.How to balance the game relations among the multi-interest subjects under the active distribution network to ensure the safe and reliable power supply is an important problem in the future application of active distribution network.This paper analyze the game relations between multi-interest subjects from the aspects of economic benefits and energy management.In the aspect of economic interests game,this paper analyzes the game pricing problem between the electricity retail enterprises under the situation of the domestic electricity market as an example.Firstly,the profit model and the value-added service which can be provided by electricity retail enterprises are studied.Then the Bertrand game model is established and the substitution coefficient is determined by analytic hierarchy process.Finally,an example is given to prove the rationality of the model.In the aspect of energy managent game,a Stakelberg model of the energy management is proposed considering the price demand response after analyzing the energy management game relationship between the supply side and the demand side in the active distribution network.First,the energy management framework of active distribution network is constructed based on ADMS.Secondly,the benefit function of ADN and DR agents is given according to the characteristics of distribution network and load.Stakelberg model is used to establish the interaction model between ADN and DR agents,and the equilibrium of the game model is proved to exist.The Stakelberg equilibrium obtained by solving the model can lead to the ADMS energy management scheme.The research in this paper can provide reference for the pricing strategy of electricity retail enterprises and the energy management of the active distribution network,as well as providing reference for studying other game relations existing in the active distribution network.The results obtained in this paper have theoretical and practical value for the study of active distribution network operation and control.