基于合作博弈的交直流配电网光储协调规划方法

PHOTOVOLTAIC-STORAGE COORDINATED PLANNING METHOD OF AC/DC DISTRIBUTION NETWORK BASED ON COOPERATIVE GAME

为进行电力市场背景下的交直流配电网光伏与储能合理规划,该文以中、低压交直流配电网运营商为投资主体,提出基于合作博弈的交直流配电网光储协调规划方法。确定中、低压交直流配电网运营商的合作博弈关系;中压配电网以投资/运维成本、购电成本和双边市场交易成本最小为目标,低压配电网以投资/运维成本、双边市场交易成本最小为目标,基于纳什议价理论建立光储协调规划模型,同时优化规划策略和交易电价;引入线性化方法处理非线性项,将模型转化为两个易于求解的子问题,采用分布式优化算法进行顺次求解。通过算例对比分析验证了所提规划模型和算法的可行性和有效性。

In order to carry out the reasonable planning of photovoltaic(PV)and battery energy storage(BES)for AC/DC distribution network under the market environment,this paper takes AC/DC distribution network operators as the main investors,and it proposes a photovoltaic-storage coordinated planning method of AC/DC distribution network based on cooperative game.It determines the cooperative game relationship between medium and low voltage AC/DC distribution network operators.And it aims to minimize the investment and operation(I&O)costs,power purchase costs and bilateral market transaction(BMT)costs for the medium voltage distribution network,while it aims to minimize the I&O costs,and BMT costs for the low-voltage distribution network.And a PV-BES coordinated planning model is proposed based on Nash bargaining theory,the transaction price formulation and planning strategy are optimized simultaneously.It introduces linearization methods to deal with nonlinear terms,and the model is transformed into two subproblems that are easy to solve,and then the distributed optimization algorithm is used to solve them sequentially.The feasibility and effectiveness of the proposed planning model and algorithm are verified through contrastive analysis of case studies.