The Impact-increment State Enumeration Method Based Component Level Resilience Indices of Transmission System

There are various kinds of disasters may incur power system blackouts and their impacts on power system are difficult to predict in advance. On the basis of existing resilience assessment indices, this paper proposes a component level resilience indices of transmission system. The component level resilience is defined as the contribution of each transmission line to system resilience under each failure scenarios. This newly developed indices can be used to quantify the resilience enhancement from the perspective of a certain component. Therefore, each failed transmission line can be ranked based on the component level indices, then optimal recovery strategies can be determined accordingly. An impact-increment state enumeration method, which is more efficient and accurate than tradition methods, is used to calculate the proposed indices. Case studies are performed on IEEE 30-bus test system to demonstrate the accuracy and computational efficiency of the proposed component level resilience indices. (C) 2019 The Authors. Published by Elsevier Ltd.