Analysis on Fault Statistics in Wenzhou Electric Power Distribution Network

The distribution network of Wenzhou Electric Power Corporation (WEPCO) has witness quite great progress during past decade. In order to give a comprehensive performance evaluation of the retrofit and construction of the distribution network from the view point of fault incidence, fault statistic over past three years are investigated and the major causes of the fault leads to interruption of service are identified firstly in the paper. Since power systems fault are temporally or spatially uneven distributed, the temporal and spatial distribution of fault are analyzed in detail using fault data from 2004 to 2006. Thereafter, some possible countermeasures are proposed to improve our service correspondingly. Since the countermeasures focus on most notable timing and location of the fault, they are expected to achieve most with least cost.