Patent ID: 11954210
Assignee: STATE GRID CORPORATION OF CHINA
Field: Digital communication (Electrical engineering)
Classification: CPC G  H  Y | IPC G  H

Claim 3:
4. The method according to claim 1, wherein the method comprises: after the obtaining a layer-based health index of a layer based on a device health index and a device importance weight of the layer, using the layer-based health index as a layer-based basic health index, and correcting the layer-based basic health index, which comprises:
traversing all layers to obtain each device Ai, k in each layer, wherein Ai,k represents a kth device in an ith layer, and j is a positive integer;
calculating a layer-based correction weight δij between the ith layer and a jth layer, initializing to δij to 0, and traversing each correlated device Ai,kl of the device Ai,k, wherein the correlated device Ai,kl represents an lth correlated device of the kth device in the ith layer, and l is a positive integer; and when the correlated device Ai,kl belongs to the jth layer, and i≠j, δij+1=δij+wi,kl, wherein wi,kl represents a device importance weight corresponding to the correlated device Ai,kl; and
correcting the layer-based basic health index based on the layer-based correction weight δij and the following formula:, CH
   i
  
  =
  
   Max
   ⁢
     
   
    (
    
     0
     ,
     
      
       BCH
       i
      
      -
      
       
        γ
        l
       
       ⁢
       
        
         ∑
         
          j
          =
          1
         
         3
        
         
        
         
          
           δ
           i
           j
          
          
           ∑
           
            w
            j
           
          
         
         ⁢
         
          (
          
           100
           -
           
            BCH
            j
           
          
          )
         
        
       
      
     
    
    )
   
  
 

wherein CHi represents a corrected layer-based health index of the ith layer; BCHi represents a layer-based basic health index of the ith layer, and i is a positive integer; γl represents layer-based correlation correction strength, and τwj represents a sum of device importance weights of all devices in the jth layer; and when i=j, the layer-based correction weight δij is 0.