Reliability Evaluation of Distribution Network Based on Probability Connectivity and Incidence Matrix
In response to the difficulty in accurately measuring the post-fault resilience of distribution network due to un-certainties in both the source and load,a method for evaluating the reliability of active distribution network is proposed with the consideration of the probability over limit risk of post-fault network security constraints.First,the Latin hyper-cube sampling method is employed to establish uncertainty models for distributed generations,load demand and the cor-responding responses.Second,a method for deriving a fault incidence matrix considering the post-fault capacity and the risk of voltage probability over limit is introduced.Third,an approach to handle opportunity constraints based on the probability characteristics of normal distribution and a non-linear power flow transformation method are presented.Final-ly,the reliability indices for the system are calculated using an analytical method.
reliability evaluationdistribution networkprobability over limitfault incidence matrixuncertainty
万方数据
维普
