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Novel Techniques for Real Time Computing Critical Clearing Time SIME-B and CCS-B
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 Title & Authors
Novel Techniques for Real Time Computing Critical Clearing Time SIME-B and CCS-B
Dinh, Hung Nguyen; Nguyen, Minh Y.; Yoon, Yong Tae;
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Real time transient stability assessment mainly depends on real-time prediction. Unfortunately, conventional techniques based on offline analysis are too slow and unreliable in complex power systems. Hence, fast and reliable stability prediction methods and simple stability criterions must be developed for real time purposes. In this paper, two new methods for real time determining critical clearing time based on clustering identification are proposed. This article is covering three main sections: (i) clustering generators and recognizing critical group; (ii) replacing the multi-machine system by a two-machine dynamic equivalent and eventually, to a one-machine-infinite-bus system; (iii) presenting a new method to predict post-fault trajectory and two simple algorithms for calculating critical clearing time, respectively established upon two different transient stability criterions. The performance is expected to figure out critical clearing time within 100ms-150ms and with an acceptable accuracy.
Critical clearing time;CCS-B;Clustering identification;Post-fault trajectory;Real time computing;SIME-B;Transient stability;
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