Transient Energy Margins and Sensitivity Models for Dynamic Security Assessment

Current approaches to dynamic security assessment include computing quantities such as maximum load supply capability (MLSC) or simultaneous interchange capability (SIC), subject to the system surviving the contigencies in a transiently stable manner with adequate transient energy margin. It appears that the latter approach is likely to lead to viable strategies in a preventive mode of operation. In this paper, a sensitivity-based approach to this problem is proposed. Current approaches to dynamic security assessment include computing quantities such as maximum load supply capability (MLSC) or simultaneous interchange capability (SIC), subject to the system surviving the contigencies in a transiently stable manner with adequate transient energy margin. It appears that the latter approach is likely to lead to viable strategies in a preventive mode of operation. Here, a sensitivity-based approach to this problem is proposed.