Reliability evaluation based on equivalent method of sensitivity consistency and component particularity representation

Abstract

Based on the equivalence method of sensitivity consistency and component particularity representation, an equivalent power flow model and a minimum load shedding model are proposed. With these two models, an equivalent reliability evaluation method considering the equivalence of external system is developed. Because the sensitivity information, voltage support, power support and transfer characteristics of the external network can be kept in equivalence, the power flow and minimum load shedding calculations and reliability indices for the internal network can reach higher accuracy in reliability evaluation compared to that based on other exiting equivalence methods. The simulation results on the IEEE-RTS 57-bus test system demonstrate the effectiveness of the proposed models and method.