Study On Integrated Supply-demand Optimal Scheduling Of Microgrid Under Low-carbon Environment

Multinational countries around the world actively develop low-carbon economy,vigorously develop clean energy.Meanwhile,the electricity market reform is actively promoted,personalized user electricity is enhanced.Thus,the concept of supply and demand interaction,which is based on power unit scheduling and DSM,has gradually become an important research topic.In this paper,a joint scheduling model for supply and demand of microgrid is established.For the power supply side,the model considers the economic and environmental performance of micro sources generation for complementary dispatching.For the demand side load scheduling,the ladder compensation price is introduced.In addition,the environmental parameters is introduced into the economic objective function of supply and demand scheduling of microgrid.At last,the validity of the model is verified by the two running states of the grid and the isolated network.The user satisfaction index is established,and the influence of different compensation prices on microgrid scheduling results is analyzed considering the operation cost and customer satisfaction.Specific work as follows:?1?Distributed power generation technology and energy storage technology are introduced.The application effect of multi energy complementary generation in microgrid is analyzed.This paper expounds the environmental friendly characteristics of distributed generation,and introduces the current policies and measures for reducing carbon emissions.?2?This paper introduces the basic theory of flexible load scheduling.A method of ladder compensation is put forward,and the ladder price mechanism is introduced into flexible load dispatch.A flexible load scheduling model based on ladder compensation price is established by considering the characteristics of flexible load and user demand for electricity.?3?The mathematical model of integrated supply and demand optimal scheduling of microgrid is established.The objective function includes the compensation cost,the operation cost of the micro sources,the exchange cost with the distribution network and CO₂ pollution control cost.The scheduling strategy of microgrid under different operating conditions is expounded,and the genetic particle swarm optimization algorithm is used to optimize the objective function,and the validity of the model is verified by simulation.?4?Finally,the influence of different ladder compensation prices on microgrid scheduling results is compared and analyzed.The user satisfaction index is established,and reasonable price range is given according to the operation cost and user satisfaction.