Research On Bidding Strategy Of Distributed Generation In Bilateral Trading

In recent years,due to the advantages of cleanliness and flexibility,distributed generation(DG)has rapidly developed and its installed capacity and investment scale have been largely expanded.With the continuous development of distributed generation market-oriented transactions,the bidding strategy of distributed generation in bilateral trading has become one of the key issues in the study of distributed generation market-oriented transactions.This paper focuses on the bidding strategy of multi-to-multi negotiation,single-to-single negotiation and multi-to-single negotiation for distributed generation in bilateral trading.Main work of this paper is as follows:1.Bidding strategy in multi-to-multi negotiation of distributed generation in bilateral trading.This paper analyzes the incomplete information dynamic game process of multi-to-multi negotiation between multiple distributed generation companies and multiple purchase companies.The model of multi-to-multi negotiation is established based on the Rubinstein game model,and the discount factor in the Rubinstein model is generalized.The discount factor will change with factors such as negotiation round,the degree of completion and executed price,which reflects the game between multiple sub-agents of the negotiating parties and the changes of bidding strategy.The simulation results show that the generalized discount factor has a better performance in simulating the multi-to-multi negotiation process of distributed generation in bilateral trading.2.Bidding strategy in single-to-single negotiation of distributed generation in bilateral trading.This paper analyzes the non-cooperative game process between a single distributed generation companies and a distribution grid operator.Multiple photovoltaic power plants attached to a distributed generation company are treated as a negotiating party,and the distributed generation company deals bilateral trading with distribution grid operators.This paper establishs a bi-level optimization model of bidding strategy in single-to-single negotiation,and then transform the difficult nonlinear bi-level optimization problem into a mixed integer linear programming problem for solution.The simulation is carried out in multiple transaction scenarios under different contract signing methods(full-time uniform price transactions,peak and valley time-sharing transactions,hourly pricing transactions).Different bidding strategies solved by this model are compared and each model sensitivity is analyzed.The simulation results show the effectiveness of the optimization model to solve the single-to-single negotiation bidding strategy of distributed generation in bilateral trading.3.Bidding strategy in multi-to-single negotiation of distributed generation in bilateral trading.This paper analyzes the game process between multiple distributed generation companies and a distribution grid operator,and establishes a multi-to-single negotiation optimization model,including a bi-level optimization model for distributed generation companies and a single-level optimization model for the distribution grid operator.The two optimization models are solved in turn.This paper designs simulation in multiple transaction scenarios under different contract signing methods(full-time uniform price transactions,peak and valley time-sharing transactions,hourly pricing transactions),and simulate the changes of bidding strategy under complete information and incomplete information.Different bidding strategies solved by optimization models are compared.The simulation results show the effectiveness of the optimization model to solve the multi-to-single negotiation bidding strategy in the bilateral trading of distributed generation.