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This paper extends evaluation of reliability of the distribution system to incorporate electric vehicles' (EVs') contribution in different modes of operation. For each load point, two topologies—centralized and dispersed EV charging—are considered. During the islanding mode of operation, household demands can be supported by vehicle-to-home (V2H) and/or local vehicle-to-grid (V2G), depending on the...
The lack of real-time tools capable of detecting risk of blackouts is one of the contribution factors to the recent large blackouts occurred around the world. In terms of dynamic security assessment (DSA), artificial intelligence and data mining techniques have been widely applied to facilitate very fast DSA for enhanced situational awareness of insecurity. However, many of the current state-of-the-art...
The China southern power grid is now the only long-distance and huge capacity power system with AC and DC transmission lines in parallel in China. The reliability and economic evaluation of it is carried out based on the reliability evaluation software package TPLAN. By calculating the system reliability indices, we get an overview of the reliability of the China southern power grid, and draw the...
The reliability indices of protective relays are first put forward in this paper. A Markov probability model is then established to evaluate the reliability of relay protection. With the state space analytical method, all the steady state probabilities and state transition probabilities can be calculated utilizing the data stored in the fault information processing system. We can get an equation that...
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