Centralized cloud energy storage system and transaction settlement method thereof, storage medium, and terminal

A centralized cloud energy storage system for massive and distributed users, comprising:

• a centralized energy storage facility invested and operated by a cloud energy storage service provider;
• the massive and distributed users;
• and a power network and a user energy management system connecting the centralized energy storage facility with the massive and distributed users, wherein
• the centralized energy storage facility is electrically connected to each of the massive and distributed users through the power network, to replace local energy storage facilities for the distributed users,
• the user energy management system is communicatively connected to each of the massive and distributed users, to receive a charging and discharging request sent by the user to the cloud energy storage service provider,
• the user energy management system issues, based on the received charging and discharging request, a charging and discharging instruction to the centralized energy storage facility, to control the centralized energy storage facility to receive power from and supply power to the user through the power network, wherein
• the cloud energy storage service provider utilizes complementarity and non-simultaneity of charging and discharging requirements among the massive and distributed users to achieve energy capacity and power capacity of an energy storage facility invested and constructed by the cloud energy storage service provider being respectively lower than a sum of energy capacity requirements and a sum of power capacity requirements of all distributed users in the centralized cloud energy storage system,
• a charging power demand pi,tC and a discharging power demand pi,tD in a time period of t decided by a cloud energy storage user i on his/her own, as well as a power pi,tC,DG of charging using local distributed energy sources need to meet:
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• where piCap denotes a power capacity of a cloud energy storage service obtained by the cloud energy storage user i, eiCap denotes an energy capacity obtained by the cloud energy storage user i, SOCMin denotes a minimum state of charge, S denotes a self-discharge rate, ηc denotes a charging efficiency, ηD denotes a discharging efficiency, Δt denotes a time interval of each time period, Pi,tDG denotes a generation power of the local distributed energy sources of the cloud energy storage user i in the time period of t, and ei,t denotes an electric quantity of the cloud energy storage service of the cloud energy storage user i at the end of the time period of t.