Weaknesses Identification Using Reliability Tracking in Distribution System with Distribution Generation

There are many components in the distribution system and each component has different influences on system reliability. High density distribution generation is integrated into the county power grid, which has a significant impact on the system reliability as well. In order to identify the components causing the system unreliable, a method for identifying weaknesses of the county power grid based on reliability tracking is proposed. Firstly, the reliability tracking criterions are proposed, then the probability and frequency allocation of the system failure event model based on the criterions are designed. Finally, an example is presented in the final part of this paper to illustrate influences of adding distribution generation to the distribution system, and show the results of system weaknesses identification, and indicate the influence of distribution generation capacity on system weaknesses.