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A heuristic‐based design of robust SMES controller taking system uncertainties into consideration
Author(s) -
Dechanupaprittha Sanchai,
Hongesombut Komsan,
Watanabe Masayuki,
Mitani Yasunori,
Ngamroo Issarachai
Publication year - 2006
Publication title -
ieej transactions on electrical and electronic engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.254
H-Index - 30
eISSN - 1931-4981
pISSN - 1931-4973
DOI - 10.1002/tee.20049
Subject(s) - robustness (evolution) , control theory (sociology) , superconducting magnetic energy storage , electric power system , tabu search , ac power , computer science , robust control , mathematical optimization , control engineering , engineering , control system , electromagnetic coil , power (physics) , voltage , control (management) , mathematics , biochemistry , chemistry , physics , electrical engineering , superconducting magnet , quantum mechanics , artificial intelligence , gene
In this paper, a heuristic‐based design of robust superconducting magnetic energy storage (SMES) controller is proposed taking system uncertainties into consideration. The SMES model with active and reactive power controllers is used. In addition, the effect of SMES coil current is also included in the model. The power system and the SMES unit with the designed controller are formulated as an optimization problem. The proposed objective function considers both the damping performance index and the robust stability index. In particular, the robust SMES controller is designed to enhance the system damping performance and robustness against system uncertainties such as various load and system parameter changes. The robust stability margin is guaranteed in terms of the multiplicative stability margin (MSM). In the proposed method, the robust SMES active and reactive power controllers are designed systematically by using hybrid tabu search and evolutionary programming, so that the desired damping performance and the best obtainable MSM are acquired. Finally, the designed SMES controller is examined under different situations to evaluate and confirm the effectiveness and robustness via eigenvalue analysis and nonlinear simulations. © 2006 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.