| Under the background of "carbon peak" and "carbon neutralization".China’s power system is moving towards low-carbon,clean and sustainable transformation.The power structure,power mode and market mechanism of the system will change profoundly,which will make the planning decision and operation control of the system face serious challenges.Power planning is the source of system change.involving many factors such as source-load characteristics,market mechanism and operation strategy.With the increasing proportion of renewable energy installed and the increasing demand for social electricity,the demand for flexibility of the system is dramatically increased due to dual source-load fluctuations.Traditional power planning methods cannot meet the requirements of the current system.At the same time,because flexible resources such as thermal power and energy storage are limited by national policies,technological maturity and cost,it is difficult to ensure the economy and security of the system by relying solely on source-side resources.Therefore,it is important to study how to use demand-side resources to participate in the planning and operation of the system.For this reason,this paper studies how to make full use of demand-side resources in power planning.By analyzing the carbon trading mechanism,green certificate trading mechanism,source-load characteristics and demand response market,a source-load game power planning model based on demand response is proposed.The main work is summarized as follows:First,this paper investigates and compares the policy and implementation status of demand response market in different regions,summarizes the development history of power planning issues and the research results of experts and scholars at home and abroad,points out the importance and necessity of using demand-side resources in power planning stage,and analyses the deficiencies of existing research.Secondly,the carbon trading mechanism and green certificate trading mechanism,which are the most representative in carbon emission reduction policies,are introduced into power planning.The feasibility and rationality of demand-side resources participating in system planning and operation through load aggregators are discussed,and the operational relationships of various entities in the system under the source-load interaction mode are analyzed,and the game relationships between the source and load sides are demonstrated.Then,a three-stage source-load master-slave game power planning model based on demand response is established.Referring to the economic means of "price discrimination," a stepped demand response incentive mechanism is proposed.In order to improve the efficiency and accuracy of model solving,the planning model is transformed into a mixed integer programming problem,and the model solving method and process are provided.Finally,the effectiveness and applicability of the proposed model in this paper are verified through numerical examples,and the impact of carbon trading prices and green certificate trading prices on planning results is analyzed.The research in this paper not only has certain guiding significance for power planning,but also provides important reference for the formulation of demand response programs in the future. |
