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An optimal location of static VAr compensator based on Gramian critical energy for damping oscillations in power systems
Author(s) -
Van Dai Le,
Li Xinran,
Li Peiqiang,
Quyen Le Cao
Publication year - 2016
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.22275
Subject(s) - controllability , static var compensator , control theory (sociology) , electric power system , gramian matrix , controllability gramian , transient (computer programming) , computer science , capacitive sensing , power (physics) , stability (learning theory) , engineering , control engineering , mathematics , control (management) , electrical engineering , eigenvalues and eigenvectors , physics , quantum mechanics , artificial intelligence , machine learning , operating system
The increase in the scale and complexity of interconnected power systems leads to multiple electromechanical oscillations. Therefore, the electric network needs to be made more stable. One type of Flexible alternating current transmission systems (FACTS) devices, namely the static VAr compensator (SVC), can be installed at buses to increase the stability margins and dampen the power system oscillations by exchanging capacitive and/or inductive load to maintain and/or control specific parameters of electrical power systems. The efficiency and performance of the SVC depend on its optimal location. Consequently, seeking the optimal placement for SVC has become a key issue. In this paper, we propose a novel method to find the optimal location for the SVC based on a two‐step approach. First, an energetic approach based on the combination of the controllability Gramian critical energy analysis with the balanced realization reduction technique is used to search for several feasible locations; then the transient stability is analyzed to compare and determine an optimal location through various test cases. The effectiveness of the proposed method has been demonstrated on the IEEE 39‐bus England power system and compared with the modal controllability index. © 2016 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.