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Hadaeghi & Abdollahi                                                                                 | 16

                      Fig. 1: The 33-bus distribution system.

                                                    TABLE I
                      RESULTS OF APPLYING THE PROPOSED METHOD IN ALL CASES

Case Number              Open Switches        Loss (kW) Number of Population Maximum Iteration
   Case I             33 - 34 - 35 - 36 - 37
  Case II                                     202.6  -                                           -
  Case III
  Case IV             7 - 9 - 14 - 32 - 37    124.8  20                                          20

                      11 – 14 – 17 – 33 - 37 103.97  20                                          20

                      9 – 14 – 16 – 25 - 32   79.67  50                                          50

                      Fig. 2: The convergence curve of the hybrid TLBO-BH algorithm in case II.
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