Operation risk assessment for current protection of distribution network with wind farm

Abstract

The introduction of the reliability and operational risk assessment to the research of protections for distribution network with DGs is helpful for the decrease of protection failures. With the current protection for complex distribution network as a start, based on its failure analysis and according to the randomness of DG, the effect of DG on the protections of distribution network and the new measures to further enhance the management level of distribution protection is explored from the respect of operational risk, which combines the reliability analysis of protection with the vulnerability assessment and the risk assessment of protection with its behavior and coordination in power system. Case study shows the effectiveness of the proposed method.