Patent ID: 11942784
Assignee: SICHUAN UNIVERSITY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H  Y | IPC H

Claim 1:
2. The method for formulating the coordinated action strategy of SSTS and DVR for voltage sag mitigation according to claim 1, wherein according to the grouping in the step 1.1, a calculation method of the probability that industrial process of the sensitive loads is interrupted comprises:
assuming that an industrial user has n sensitive loads and M sensitive industrial processes; j is made to represent a sensitive load, and m represents a sensitive industrial process, i.e., P J=1,2, . . . ,n, m=1,2, . . . , M; then tripping probabilities Pprocess-m1, Pprocess-m2 and Pprocess-m3 of sub-processes of S1-type, S2-type and S3-type sensitive loads are respectively:, P
      
       process
       -
       
        m
        1
       
      
     
     =
     
      1
      -
      
       
        ∏
        
         j
         =
         1
        
        A
       
        
       
        (
        
         1
         -
         
          P
          
           
            S
            1
           
           -
           j
          
         
        
        )
       
      
     
    
   
   
    
     (
     1
     )
    
   
  
 

 
  
   
    
     
      P
      
       process
       -
       
        m
        2
       
      
     
     =
     
      
       ∏
       
        j
        =
        1
       
       B
      
      
       P
       
        
         S
         2
        
        -
        j
       
      
     
    
   
   
    
     (
     2
     )
    
   
  
 

 
  
   
    
     
      P
      
       process
       -
       
        m
        3
       
      
     
     =
     
      1
      -
      
       
        ∏
        
         j
         =
         1
        
        C
       
       
        (
        
         
          P
          
           
            S
            3
           
           -
           j
          
         
         ⁢
         
          P
          
           
            S
            3
           
           -
           control
           -
           j
          
         
        
        )
       
      
     
    
   
   
    
     (
     3
     )
    
   
  
 

wherein A, B and C are the number of three types of sensitive loads respectively; PS1-j,PS2-j and PS3-j are tripping probabilities of the three types of sensitive loads respectively; and PS3control-j is the tripping probability of a device controlled by the S3-type sensitive loads;
assuming that an m-th industrial process contains K, L and Q of the above three sub-processes respectively, the interruption probability of the industrial process is:, P
      
       process
       -
       m
      
     
     =
     
      
       ∏
       
        
         m
         1
        
        =
        1
       
       K
      
       
      
       
        P
        
         process
         -
         
          m
          1
         
        
       
       ⁢
       
        
         ∏
         
          
           m
           2
          
          =
          1
         
         L
        
         
        
         
          P
          
           process
           -
           
            m
            2
           
          
         
         ⁢
         
          
           ∏
           
            
             m
             3
            
            =
            1
           
           Q
          
           
          
           P
           
            process
            -
            
             m
             3
            
           
          
         
        
       
      
     
    
   
   
    
     (
     4
     )