Research On New Power System Optimal Dispatching Method Based On Flexible Resource Game

With the large-scale grid connection of new energy,the intermittency and volatility of its output have brought significant difficulties to the scheduling work of power systems containing wind power,photovoltaic and other new energy sources,requiring the addition of a certain scale of flexible resources for coordinated operation.Under the participation of various types of flexible resources,how to improve the economy and stability of new power system scheduling with optimal scheduling strategies is a key issue that needs to be urgently solved in the new power system.Based on the above power system scheduling problem,firstly,this paper constructs a capacity allocation method for two types of flexible resources,electric energy storage and hydrogen energy storage,in multiple micro-grids based on the distributed robust method.The goal is to minimize the operating cost,wind and solar abandonment cost,and energy storage investment cost of the entire power system,and to consider the distribution space of wind and solar output prediction errors in different regions,A new power system scheduling model was constructed with the participation of flexible resources in the form of cooperative games,and the complex model was simplified and solved using Bonferroni and CVaR approximation methods to study the scheduling method of energy storage systems participating in the new power system.Secondly,on the basis of energy storage,flexible retrofitted thermal power units,pumped storage,and reducible loads were added as flexible resources to participate in the scheduling of the new power system.By establishing a master-slave game model with flexible retrofitted thermal power as the main body and its remaining flexible resources as the subordinate body,a new power system scheduling method and pricing strategy for flexible resources coordination under various types of flexible resources were studied,And iteratively solve by splitting the decision variables of the upper and lower level models.The research results indicate that the new power system scheduling model with multiple flexible resource games proposed in this article can quickly solve the daily scheduling plans of the new power system under different load scenarios and wind solar output environments,while ensuring a high proportion of wind and photovoltaic consumption.It also fully coordinates the output characteristics of various flexible resources,ensuring the balance and rationality of benefits for all parties.At the same time,simulation results from the distributed robust flexible resource allocation model and the multi flexible resource master-slave game model show that participating in the scheduling of the new power system through cooperative games with multiple types of flexible resources not only brings higher economic benefits,but also stabilizes the output of the cooperative flexible resources compared to competitive games,which is conducive to ensuring the safe and stable operation of the new power system.