Research progress and economic analysis on energy storage technology
With the increasing demand for energy regulation capacity of the power system and the increasing scale of new energy development and consumption,the demand for energy storage is increasing.Energy storage technology is of great significance for balancing energy supply and demand,improving power system flexibility and enhancing ener-gy security.The research status of energy storage technology was summarized,and the common energy storage tech-nologies such as electrochemical energy storage,thermal energy storage,mechanical energy storage and capacitive energy storage were analyzed.The characteristics,application scenarios and economic effects of different energy stor-age were summarized.The advantages of each energy storage technology combined with economy were analyzed from the perspective of electricity cost economy,and the development direction,application field and development trend of energy storage technology were analyzed.At present,the development direction of energy storage technology main-ly includes new energy storage materials,new technologies and new equipment research.While developing new ener-gy storage technologies,it should also pay attention to its economy and feasibility.With the successful application of energy storage technology and the continuous expansion of application scenarios,the future energy storage system will show the characteristics of wide area and diversity,so it is urgent and necessary to strengthen the coupling of energy storage devices.In the future,energy storage presents three trends in technology,economy and development direc-tion:accurate classification of energy storage types and rational planning of multi-energy storage systems to achieve high penetration of new energy,accurate planning and configuration of multi-energy storage devices;it focuses on the development of coordinated operation and scheduling technology of multi-energy storage and other power sources.In particular,the coordinated operation of multi-energy storage can play the role of safety and stability maintenance of energy storage on the basis of balance and supply guarantee.Among them,long-term,cross-seasonal,large-capacity and low-cost energy storage technology is the key to realize the safety and stability of power grid.To ensure the value realization and policy mechanism of energy storage system,it is necessary to study and establish the system value formation mechanism and policy mechanism to promote the sustainable development of energy storage,and to construct the medium and long-term power market,spot market and auxiliary service market mechanism to promote the participation of energy storage in balanced regulation.
energy storage technologyelectrochemical energy storagethermal energy storagemechanical energy storagecapacitive energy storageformation mechanism of system valueenergy storage deviceapplication scenarios
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