User-side Multi-scenario Energy Storage Configuration And Operation Strategy

With the transformation of my country's energy consumption and supply structure,the energy system will continue to present new development trends.The energy needs of users' will become more and more diversified and integrated,and the degree of coupling of cooling,heating,and electricity systems will become deeper.The energy storage system will play an important role in integrated energy services.The use of energy storage equipment on the user side can significantly increase the utilization rate of renewable energy,achieve peak-shaving and valley-filling,thereby reducing system energy costs.A single energy storage technology can no longer satisfy the balance between energy storage and economy at the same time.This thesis studies the user-side multi-scenario energy storage planning and operation optimization strategy.The specific content is as follows:(1)According to the residential area scenario,this thesis studies the definition and constraint conditions of the state of charge of electrical energy storage,establishes the configuration and operation model of electrical energy storage,and establishes an optimization equation to calculate the configuration and energy storage according to the characteristics of residential energy use.The operation strategy of the company is compared and analyzed with the scenario where electric energy storage is not configured in residential areas,and the configuration results of different types of electric energy storage and the operation strategy of electric energy storage under peak and valley electricity prices are discussed.(2)According to the commercial area scenario,the energy storage configuration and operation model after the real-time electricity price is implemented by the load aggregator,and the configuration and operation model of various types of energy storage for cold,heating and power in the commercial area is established to minimize the cost of the load aggregator.As the objective function,this thesis establishes the configuration and operation model of cold,heat and electricity energy storage,establishes the evaluation index of energy storage,and analyzes the impact of energy storage policy subsidies,energy storage unit cost and differences in the establishment of energy storage locations on energy storage construction based on the evaluation indicators.(3)For the comprehensive park scenario,this thesis conducts demand response management for different types of loads,controls user power loads through electricity prices,regulates various qualities of heat energy on the basis of energy cascade utilization,and manages the heat load of residential users by adjusting the temperature of air conditioners.This thesis regulates the load to manage the thermal load of industrial users,and at the same time uses the exergy concept in thermodynamics to evaluate the energy utilization,proposes a multi-objective model based on exergy loss and total cost,and calculates and studies the operation strategy of energy storage in the comprehensive park.