Optimum power flow control based on power apparatus diagnosis by Intelligent Grid Management System (IGMS)

Transmission and distribution (T&D) system comprises a lot of aged apparatus, which may cause the decrease of the reliability owing to their deterioration. In order to maintain the high efficiency and high quality of T&D system, the authors have proposed “Intelligent Grid Management System (IGMS)”, which provides the optimum maintenance strategy and optimum power flow control. IGMS evaluates all of the events occurring in the T&D system as the cost. IGMS optimizes the power flow routes based on the failure risk, T&D loss, overload operation, life estimation of power apparatus, customer outage and so on. The impact of individual apparatus failure affects a whole T&D system performance such as blackout and secondary failure. The failure risk is also evaluated as cost by the product of the impact of the individual failure and the failure rate estimated by the condition monitoring diagnosis results of power apparatus. In this paper, the optimum power flow control based on the real-time diagnosis results of power apparatus is discussed.