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Improvement of power system stability by on‐off discrete control of series capacitors
Author(s) -
Hara Tsukushi,
Kobayashi Naoki,
Takei Akihisa,
Tanomura Ken'Ichi,
Koyanagi Kaoru,
Komukai Toshihiko
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.4391170403
Subject(s) - capacitor , thyristor , emtp , electric power system , reactance , series (stratigraphy) , engineering , control theory (sociology) , filter capacitor , power (physics) , electronic engineering , voltage , computer science , electrical engineering , control (management) , physics , paleontology , quantum mechanics , artificial intelligence , biology
Application of controlled series capacitors with anti‐parallel thyristor combination across the capacitor segment is one of the new and promising countermeasures for enhancement of power system stability. The line reactance can be directly controlled by the controlled series capacitors, hence, it is very effective to apply the capacitors for damping power system disturbances. In this paper, we describe the following. (1) The design method of control system for the segmented series capacitors with thyristor switches is proposed. (2) The effectiveness of the controlled capacitors proposed for power system stabilization is shown with the results of EMTP analysis. (3) The possibility of zero passing missing phenomena of capacitor voltage is indicated by EMTP simulation, and a countermeasure is proposed in order to avoid the phenomena. The effects of the countermeasure is indicated by the results of EMTP simulation.