Research On Investment Decision And Joint Planning Of Incremental Distribution Grid Based On Game Analysis

By introducing social capital and investing,constructing,and operating in the form of mixed ownership companies,incremental distribution reforms promote the construction and development of distribution networks and improve the efficiency and economy of operations.The profit margin of distribution companies is small,according to the current incremental distribution pricing policy.At present,there are problems that it is difficult for incremental distribution projects to attract market players’ investment and implementation,and that distribution companies have no incentive to improve the reliability of power supply areas.In order to change the investment orientation of power distribution service as a single energy service,the comprehensive energy income of incremental power distribution company is expanded by introducing new production technology and operation mode through different investment entities.At the same time,in order to improve the reliability of power supply and save planning costs,measures to allocate reliability costs reasonably are adopted to coordinate the benefits between the incremental distribution network and the adjacent power grid.According to the impact of reforms on investment and planning,incremental distribution investment decisions and grid planning are studied: For the interest game between internal shareholders,considering the industry background and technological advantages of different investment entities,the formation of mixed ownership companies and investment strategies for entities based on cooperative games are studied;For the benefit game between external distribution companies,considering the sharing of resources and cost sharing among distribution companies,a joint planning method for adjacent distribution networks based on cooperative game is proposed.Firstly,according to the policy background of incremental power distribution reform,the research status of equity allocation method of the mixed ownership company,investment decision-making method and joint planning method of distribution network is investigated,which lays the foundation for subsequent research.Secondly,the key points of incremental power distribution reform and the status quo of operations are analyzed.According to the power distribution price policy,the profitability of power distribution services is analyzed through pilot examples.Furthermore,combining the analysis of multiple entities,the characteristics of incremental distribution investment decisions and grid planning are summarized.Thirdly,from the perspective of introducing new production technologies and operating methods,the shareholders of the incremental distribution mixed ownership company are selected,and the company’s formation form is proposed.Considering the coordinated operation of distributed power supply,terminal integrated energy and distribution network,an incremental distribution equity allocation model based on cooperative game is established to guide the allocation of equity and investment income of different investment entities.Finally,in order to coordinate the unified planning of the incremental distribution network and other distribution networks,with the goal of minimizing the reliability cost of the plan,a cooperative game model of multiple distribution companies is established to rationally allocate tie lines and distributed power resources.Based on the Shapley value and MDP value,strategies for sharing planning costs among distribution companies is proposed.Furthermore,the applicable conditions of the two allocation strategies are compared.