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Coordinated fuzzy logic control between SVC and PSS to enhance stability of power systems
Author(s) -
Kihara Hidemi,
Hiyama Takashi,
Miyauchi Hajime,
Ortmeyer Thomas H.
Publication year - 1996
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.4391160105
Subject(s) - static var compensator , control theory (sociology) , electric power system , thyristor , fuzzy logic , flexible ac transmission system , scheme (mathematics) , controller (irrigation) , computer science , control engineering , set (abstract data type) , fuzzy control system , stability (learning theory) , power (physics) , engineering , control (management) , power flow , voltage , mathematics , mathematical analysis , agronomy , physics , quantum mechanics , artificial intelligence , electrical engineering , machine learning , biology , programming language
This paper presents a new switching control scheme for static var compensator (SVC) using fuzzy logic control rules to enhance the overall stability of electric power systems. In addition, the coordination with power system stabilizers (PSS) is also considered to achieve a wider stable region. An SVC is set on one of the busbars in the transmission system, where the real power flow signal is utilized at the location of the SVC to determine the firing angle of the thyristor switch. The switching control scheme is simple so as not to require heavy computation on the microcomputer based switching controller. The PSSs are also set on the generators in the study system. Simulation results show the effectiveness of the proposed fuzzy logic switching control scheme for the SVC. The coordination between SVC and PSS is also effective to enlarge the stable region.