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| Research on feasible splitting time interval of controlled islanding |
| Ding Lei1,Guo Yichen1,Chen Qing1,Vladimir Terzija1,2 |
1. Key Laboratory of Power System Intelligent Dispatch and Control of the Ministry of Education (Shandong University) Jinan 250061 China;
2. The University of Manchester Manchester, UK, M13 9PL |
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Abstract Controlled islanding is an active and effective way of avoiding catastrophic wide area blackout. The splitting time is the determining factor of successful islanding. However, it has not been well studied before since existing islanding methods are based on the system snapshots before disturbance occurrence and do not consider dynamic islanding process. This paper investigates the splitting time of controlled islanding systematically for the first time. Transient energy function is used to evaluate the stability of islands formed during the islanding process quantitatively. And the feasible splitting time interval is determined by the critical energy of islands to ensure the coherency and transient stability within created islands. Only when the splitting is undertaken within the feasible splitting time interval, the coherency within each island can be maintained and a successful islanding is possible.
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Received: 10 July 2014
Published: 14 September 2015
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2015, Vol. 30 
