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

Changcheng Song, Xiaodong Chu, Linlin Ma, Xiaobo Wang, Xin Li, Liang Wang, Bing Zhang and Cheng Wu
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Changcheng Song: Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education, Shandong University, 17923 Jingshi Road, Jinan 250061, China
Xiaodong Chu: Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education, Shandong University, 17923 Jingshi Road, Jinan 250061, China
Linlin Ma: Shandong Electric Power Dispatching and Control Center, Jinan 250001, China
Xiaobo Wang: Shandong Electric Power Dispatching and Control Center, Jinan 250001, China
Xin Li: Shandong Electric Power Dispatching and Control Center, Jinan 250001, China
Liang Wang: Shandong Electric Power Dispatching and Control Center, Jinan 250001, China
Bing Zhang: Shandong Electric Power Dispatching and Control Center, Jinan 250001, China
Cheng Wu: Shandong Electric Power Dispatching and Control Center, Jinan 250001, China

Energies, 2018, vol. 11, issue 6, 1-20

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.

Keywords: controlled islanding; large-scale AC/DC power system; dispatch area; islanding area; spectral clustering; multi-infeed effective short circuit ratio (MESCR) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
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