Maryam Hajinia - Dept. of Electrical and Computer Engineering, University of Tabriz Tabriz, Iran
Seyed Mehdi Mahaei - Azarbaijan Regional Electric Company Tabriz, Iran
Jafar Jafarzadeh - Tabriz Electric Power Distribution Company Tabriz, Iran

In this paper is proposed a new multi-objectivefunction include energy losses cost and reliability indices forplacement of reclosers and fuses in distribution networks. All ofthe indices is converted to economical factors for suitableoptimization and physical concept the objective function.Increasing the annual energy cost and cost of reliability indicesare considered because study term is more than a year. Also inthis paper a new optimization algorithm is proposed that isnamed society development algorithm (SDA). Case studies on aTabriz 115 busses network shows the SDA is optimize betterthan genetic algorithm (GA). Simultaneous placement ohreclosers and fuses have optimal results than non- Simultaneousplacement.

recloser; fuse; reliability, Society DevelopmentAlgorithm