期刊
IEEE TRANSACTIONS ON POWER SYSTEMS
卷 31, 期 3, 页码 2434-2444出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPWRS.2015.2451592
关键词
Input-output analysis; inter-area oscillations; sparsity-promoting optimal control; wide-area control
资金
- ETH Zurich
- University of Minnesota Informatics Institute Transdisciplinary Faculty Fellowship
- National Science Foundation [ECCS-1407958]
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [1407958] Funding Source: National Science Foundation
- Div Of Electrical, Commun & Cyber Sys
- Directorate For Engineering [1739210] Funding Source: National Science Foundation
Local and inter-area oscillations in bulk power systems are typically identified using spatial profiles of poorly damped modes, and they are mitigated via carefully tuned decentralized controllers. In this paper, we employ non-modal tools to analyze and control inter-area oscillations. Our input-output analysis examines power spectral density and variance amplification of stochastically forced systems and offers new insights relative to modal approaches. To improve upon the limitations of conventional wide-area control strategies, we also study the problem of signal selection and optimal design of sparse and block-sparse wide-area controllers. In our design, we preserve rotational symmetry of the power system by allowing only relative angle measurements in the distributed controllers. For the IEEE 39 New England model, we examine performance tradeoffs and robustness of different control architectures and show that optimal retuning of fully-decentralized control strategies can effectively guard against local and inter-area oscillations.
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