Assessment And Enhancement Of Laoting County Distribution Network Reliability

Centralizing the enhancement of reliability of load point in distribution network, this paper discusses at subject of reliability of distribution system at Laoting County. Firstly, the article briefly reviewed the history of the assessment technology of power distribution network, and lay stress on the defects of the recent methods. New method of reliability assessment based on the minimal path method and equivalent approach is proposed for complicated distribution system, and is used to evaluate power supply reliability at Laoting County. The outputs of assessment with experience of operation are used to develop some improving plans for distribution system reliability at Laoting County. After that, the improving plans are checked on the economic viewer, and definite criterions are given in paper, based on which the comparison result is given. At last, based on the result of comparison of improving plans, some proposition for reliability improvements are put forward.The result of digital simulation and evaluation of model based on real network at Laoting County are used to assess the reliability. The sample test shows that new method is effective and accurate. The optimal one of improving plans for local network is shown after the use of economical criterions.