Document Type : Original Article


Sama Technical and Vocational Training College, Islamic Azad University, Kerman Branch, Kerman, Iran


With the increasing dependence on electrical power generation resources, achieve a good level of reliability, quality and safety, along with cost-efficient day to day for consumers is more important Another necessary thing that should take into consideration the safety of electric power.One of the first requirements of each feeding system is that such a system be designed well and in the next step be to good maintenance until the number of errors that might occur, it is limited. In this article, we try to have a variety of errors found in the distribution system should be evaluated and appropriate with such a solution provides dynamic protection of these errors as much as possible to a minimum of time.


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