| With the gradual deepening of China’s "power reform" and the proposal of "carbon neutral" goal,the prospect of technology development and consumption of new energy such as wind power and photovoltaic becomes more and more clear.Many experts and scholars at home and abroad have made some achievements in the fields of energy coordination and multi energy complementary operation within the park.However,there are differences in the geographical location,functions and load characteristics of different scenarios.On this basis,this paper takes the park’s multi energy complementary system as the research object,and studies various scenarios of desert park’s isolated island operation,grid connected residential park and parallel multi-functional Park including clean energy and shared energy storage.(1)The mechanism of multi energy complementary system is discussed.This paper introduces the operation scenarios of various parks with different environments and functions,and discusses the multi energy complementary scheme of traditional integrated energy system and distributed generation(clean energy)access for the park.This paper expounds the concept of demand response characteristics of campus load.This paper briefly describes the important role of energy storage in multi energy complementary system,and analyzes the development status,type and scale of energy storage technology.This paper introduces the strategy of allocating shared energy storage among multiple wind power plants,which lays the foundation for the application of shared energy storage in Chapter 5 multi-functional park.(2)In order to solve the problems of poor municipal infrastructure and insufficient energy supply in desert areas,this paper puts forward a variety of schemes of wind solar energy storage combined energy supply under island operation mode of desert park.A variety of micro sources of wind and solar energy storage are configured in the park,and the models of batteries,fans and photovoltaic equipment are built.Based on constant power control and constant voltage and constant frequency control,the micro grid is composed.Three types of parks in Xinjiang are selected and verified by simulation,so as to realize the local consumption and utilization of clean energy in desert areas.(3)In order to solve the problem that the load type of new residential park is more complex and the demand for energy supply economy and environmental benefits is higher,a multi energy complementary optimal allocation model of wind,solar and gas storage in residential park is proposed.Through the configuration of wind,solar and gas storage of a variety of energy,the operation process can not only supply energy for the park,but also sell energy to the power grid.This paper analyzes the load type of grid connected residential park,establishes the demand response characteristic model,takes the maximum income of park operators as the goal,and comprehensively considers the environmental factor of carbon emissions,and builds the optimal scheduling model.Taking the load of a residential park as an example,the results show that the implementation of price based demand response can promote the change of users’ energy consumption behavior,realize peak load reduction and valley filling,and improve the operation efficiency of the park.(4)Aiming at the problems of low utilization rate of energy storage system and low efficiency of abandoned energy storage in multi-functional Park,the energy optimal allocation scheme of multi-functional park considering shared energy storage is proposed.The load of each functional area is naturally complementary.In the case of shared energy storage,the functional areas use energy efficiently through real-time energy interaction,and the redundant and insufficient energy is stored or released by shared energy storage.Taking the lowest energy cost as the goal,the optimal allocation model is established.Taking a park in Northwest China as an example,the superiority of the proposed model is demonstrated. |
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