This paper presents a methodology including mixedinteger linear programming formulation for long term maintenance schedule of overhead lines considering feeders ranking. Important feeders are extracted from a ranking list by basic indices such as the type of costumers, loads, length, extent as well as failure rates of feeders. It is necessary to consider importance of feeder in overhead lines maintenance scheduling. In other words, feeders ranking would enable distribution planners and asset managers to have a high accuracy investment decision which can be made effectively towards maintenance scheduling. The proposed methodology is tested on 11-feeder the Roy Billinton Test System which revealed the accuracy and efficiency of the approach.

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