Research On Cooperative Optimization Strategy Of Multi Energy Interconnection System

Against the background of the growing global energy shortage,developing new energy sources has become a topic of common concern to all countries in the world.At present,distributed energy systems are highly valued in various countries in the world and are actively exploited.Among them,wind power and photovoltaic power generation are the most obvious,and their advantages such as high efficiency and environmental protection are particularly prominent.However,due to its lack of corresponding control technology,which leads to its access to the grid cost is too high,and the safe operation of the main network has had a negative impact.To this end,a multi-energy complementary system has emerged.With its high degree of system integration and rapid process innovation,multienergy complementary systems have gradually become the sustainable development of the energy sector through effective ways and means of comprehensively complementing and efficiently utilizing various energy sources one of the directions.This article has carried on tentative research to this.For the multi-energy complementary system based on pumped storage energy,the optimization model of the pumped-storage system is established based on the operating costs,construction and maintenance costs,and the cost of network loss.A coordination strategy based on peak load and valley optimization is proposed,and an improved PSO algorithm is used to solve the objective function.Finally,according to the typical daily load data of Shandong Province,the simulation results show that the construction of pumped storage power plant system can maximize the regulation of pumped storage power plant to improve the reserve pumped storage power station can play more Good coal saving benefits.For multi-energy complementary systems that include cogeneration,this paper puts forward a new type of integrated system which is based on the CCHP and the active power distribution network,The integrated system also includes the renewable energy sources such as wind power and solar energy,that can effectively improve the efficiency of the system.Based on a user's cold hot electricity load characteristic,the use of electric operation and mix with hot running mode,combination of installations,system operation cost,micro power generation cost and the minimum network loss as the optimization goal of distribution network,the multi-objective optimization model is established and the operation strategy is optimized.In typical regions of northern summer load were analyzed,and the validation of the proposed method can effectively improve the efficiency of the installations,the system and the utilization of energy.