Patent ID: 11953398
Assignee: DALIAN UNIVERSITY OF TECHNOLOGY
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 1:
2. The quasi-static calculation method for lateral unbalanced force of transmission lines according to claim 1, wherein influence of large deformation effect of the span conducting wire on the mean wind pressure fRef(x) need to be corrected, and the steps are as follows:
(a) H1i is the corrected horizontal tension of a span conducting wire, and it is an intermediate variable for calculating mean wind pressure; letting initial value of the H1i be H0, and i be a positive integer;
(b) calculating mean wind pressure at each point of the span conducting wire respectively, with the expression thereof being:, f
        ¯
       
       
        R
        ⁢
        e
        ⁢
        f
       
      
      (
      x
      )
     
     =
     
      
       1
       2
      
      ⁢
      ρ
      ⁢
      
       C
       D
      
      ⁢
      
       
        
         DV
         
          1
          ⁢
          0
         
         2
        
        (
        
         
          
           H
           C
          
          
           1
           ⁢
           0
          
         
         -
         
          
           
            q
            ⁡
            (
            
             L
             -
             x
            
            )
           
           ⁢
           x
          
          
           2
           ⁢
           0
           ⁢
           
            H
            
             1
             ⁢
             i
            
           
          
         
         -
         
          
           
            
             c
             0
            
            +
            
             Δ
             ⁢
             Y
            
           
           
            1
            ⁢
            0
            ⁢
            L
           
          
          ⁢
          x
         
        
        )
       
       
        2
        ⁢
        α
       
      
     
    
   
   
    
     (
     13
     ), where: ρ represents air density; CD represents drag coefficient; D represents diameter of the span conducting wire; V10 represents wind speed; HC represents ground clearance of a conducting wire support; and α represents wind profile exponent;
(c) solving the horizontal tension H1 by formula (1);
(d) if |H1−H1i|>tolerance error, letting i=i+1, H1i=H1, and repeating steps (b) and (c); and
(e) if |H1−H1i|<tolerance error, outputting the corrected mean wind pressure fRef(x) of the span conducting wire.