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Energies 2018, 11(6), 1483; https://doi.org/10.3390/en11061483

An Efficient Controlled Islanding Strategy for Large-Scale AC/DC Power Systems

1
Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education, Shandong University, 17923 Jingshi Road, Jinan 250061, China
2
Shandong Electric Power Dispatching and Control Center, Jinan 250001, China
*
Author to whom correspondence should be addressed.
Received: 18 May 2018 / Revised: 2 June 2018 / Accepted: 4 June 2018 / Published: 6 June 2018
(This article belongs to the Section Electrical Power and Energy System)
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Abstract

A controlled islanding strategy should be carefully designed to prevent power systems from overall collapse caused by extremely serious faults, which is of high computational complexity for large-scale AC/DC power systems. An efficient controlled islanding strategy for large-scale AC/DC power systems is proposed in this paper. The original power system is first reduced to decrease the computational complexity. The reduced power system is then partitioned into a number of dispatch areas by using the breadth-first search algorithm. Next, the reduced power system is recovered to obtain the detailed information of the dispatch areas. The spectral clustering algorithm is used to cluster the large number of dispatch areas into a small number of islanding areas. Finally, the controlled islanding strategy is verified by assessing the steady and dynamic performance of the power system. The feasibility, efficacy, and adaptability of the controlled islanding strategy are demonstrated by the case study of a large-scale multi-infeed AC/DC power system in China. View Full-Text
Keywords: controlled islanding; large-scale AC/DC power system; dispatch area; islanding area; spectral clustering; multi-infeed effective short circuit ratio (MESCR) controlled islanding; large-scale AC/DC power system; dispatch area; islanding area; spectral clustering; multi-infeed effective short circuit ratio (MESCR)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Song, C.; Chu, X.; Ma, L.; Wang, X.; Li, X.; Wang, L.; Zhang, B.; Wu, C. An Efficient Controlled Islanding Strategy for Large-Scale AC/DC Power Systems. Energies 2018, 11, 1483.

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