Patent ID: 11941711
Assignee: TSINGHUA UNIVERSITY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H  Y | IPC G  H

Claim 6:
7. The system of claim 1, wherein an operating expense CO paid by the cloud energy storage service provider to a power grid is obtained through a formula as:, C
    O
   
   =
   
    
     
      
       ∑
       
        t
        ∈
        T
       
      
      
       Δ
       ⁢
       
        t
        [
        
         
          
           
            λ
            t
           
            
           (
           
            
             
              
               ∑
               
                k
                ∈
                K
               
              
              
               P
               
                k
                ,
                t
               
               C
              
             
             -
             
              
               ∑
               
                k
                ∈
                K
               
              
              
               P
               
                k
                ,
                t
               
               D
              
             
             +
            
            ,
            
             
              ∑
              
               i
               ∈
               
                S
                
                 C
                 ⁢
                 E
                 ⁢
                 S
                
               
              
             
             
              p
              
               i
               ,
               t
              
              D
             
            
           
           )
          
          +
         
         +
         
          
           
            θ
            t
           
           (
           
            
             
              ∑
              
               k
               ∈
               K
              
             
             
              P
              
               k
               ,
               t
              
              C
             
            
            -
            
             
              ∑
              
               k
               ∈
               K
              
             
             
              P
              
               k
               ,
               t
              
              D
             
            
            +
            
             
              ∑
              
               i
               ∈
               
                S
                
                 C
                 ⁢
                 E
                 ⁢
                 S
                
               
              
             
             
              p
              
               i
               ,
               t
              
              D
             
            
           
           )
          
          -
         
        
        ]
       
      
     
     +
     Δ
    
    ⁢
    C
   
  
  ,, where (·)+ and (·)− respectively defined as taking a positive part and a negative part in parentheses, namely:, (
    x
    )
   
   +
  
  =
  
   {
   
    
     
      
       x
       ,
       
        x
        ≥
        0
       
      
     
    
    
     
      
       0
       ,
       
        x
        <
        0
       
      
     
    
   
  
 

 
  
   
    (
    x
    )
   
   -
  
  =
  
   {
   
    
     
      
       x
       ,
       
        x
        ≤
        0
       
      
     
    
    
     
      
       0
       ,
       
        x
        >
        0, T denotes a set of times, K denotes a set of centralized energy storage facilities, k denotes a k-th type of centralized energy storage facility, SCES denotes a set of cloud energy storage users, λt denotes an electricity fee that the cloud energy storage service provider pays to the power grid when obtaining electricity from the power grid in the time period of t, θt denotes an electricity fee paid by the power grid to the cloud energy storage service provider when the cloud energy storage service provider returns power to the power grid in the time period of t, Pk,tC and Pk,tD respectively denote a charging power and a discharging power in the time period of t of the k-th type of energy storage facility, and ΔC denotes a wheeling fee of a power transmission and distribution network that the cloud energy storage service provider pays to the power grid when carrying out the cloud energy storage service.