In these paper, Shipu first paper the background of the power industry and economic development of a brief introduction. Analysis of the 10 kV line in West Si-3317 raw data to understand the local environment and geographical features, as well as files on the overhead wire to choose from and design, and to determine the system to sketch; overhead lines in order to ensure the safety and reliability , a simple one for each side of the transformer short-circuit current calculation in order to select high-pressure equipment, as well as the protection device. According to some information on the final inspection, to improve the power grid lines and the maintenance of a reliable method to a number of simple measures. The main objective of this design is to improve power system reliability, cost-saving construction of electric power enterprises to increase the economic efficiency of enterprises, so that the management of 10kV lines to further automate.
Keywords:Span, Short-circuit current computation, Protection installation, Reliability
