An Improved Particle Swarm Optimization with Biogeography-Based Learning Strategy for Economic Dispatch Problems

Algorithm 3

(the repair operator for power balance constraint).

1 Initialize a set

2 If  Then

3 Randomly select a component from the set ;

4 While

5  Exclude from , and let the new set be ;

6  Randomly select a component from ;

7  ;

8 End While

9 Add an amount to , such as ;

10 Else If

11 Randomly select a component from the set ;

12 While

13  Exclude from , and let the new set be ;

14  Randomly select a component from ;

15  ;

16 End While

17 Add an amount to , such as ;

18 End If