Patent ID: 11862973
Assignee: XIANGTAN UNIVERSITY
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC H

Claim 4:
5. The optimization method for capacity of a heat pump and power of various sets of energy source equipment in an energy hub according to claim 1, wherein the step (2) specifically comprises that:
in the energy hub, the power of various sets of equipment can be optimized only after the capacity of the various sets of equipment is set, which is a problem about master-slave optimization; the double layers of optimization models are commonly used models for solving the master-slave optimization problem;
the first objective function of the upper-layer model is to minimize the total annual cost Ctot of an energy hub system:, min
          ⁢
          
            C
            tot
          
        
        =
        
          
            C
            init
            
              H
              ⁢
              P
            
          
          +
          
            
              
                
                  
                    (
                    
                      1
                      +
                      i
                    
                    )
                  
                  n
                
                -
                1
              
              
                
                  i
                  ⁡
                  
                    (
                    
                      1
                      +
                      i
                    
                    )
                  
                
                n
              
            
            ⁢
            
              C
              
                o
                ⁢
                p
              
            
          
        
      
    
    
      
        (
        1
        )
      
    
  
  
    
      
        
          C
          init
          
            H
            ⁢
            P
          
        
        =
        
          
            φ
            
              H
              ⁢
              P
            
          
          ⁢
          
            Q
            
              HP
              ,
              max
            
          
        
      
    
    
      
        (
        2
        )
      
    
  

wherein, CinitHP : is the initial cost of the heat pump, n is the operating years of the energy hub, i is the operation and maintenance growth rate of the energy hub, Cop is the annual operation cost and is provided by the lower-layer model, φHP is the price per unit heat pump capacity, and QHP,max is the capacity of the heat pump;
the second objective function of the upper-layer model is to minimize the total annual exhaust emission CO2,tot of the energy hub system:

min CO2,tot=CO2,e+CO2,f   (3)

wherein, CO2,e is the exhaust emission of an electrical device, CO2,f is the exhaust emission of a natural gas device, and CO2,tot is provided by the lower-layer model;
the heat pump capacity constraint of the upper-layer model is:

Q≤QHP,max≤Q_maxHP,max   (4)

where, Q_maxHP,max is the theoretical maximum capacity of the heat pump, that is, the desirable upper limit when optimizing the capacity of the heat pump, and is provided by the lower-layer model.