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Development of transient stability controller system (TSC) based on on‐line stability calculation
Author(s) -
Ota Hiroji,
Inoue Toshihiro,
Ito Hisanori,
Fukushima Nobuo,
Omata Kazuya,
Morita KenIchi,
Kokai Yutaka
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.4391170406
Subject(s) - blackout , transient (computer programming) , fault (geology) , electric power system , control theory (sociology) , controller (irrigation) , stability (learning theory) , line (geometry) , engineering , generator (circuit theory) , power (physics) , computer science , control (management) , mathematics , physics , artificial intelligence , geometry , quantum mechanics , machine learning , seismology , agronomy , biology , geology , operating system
A new transient stability controller system (TSC) based on on‐line transient stability calculation has been developed. The TSC system prevents the power system from wide‐area blackout by shedding generators optimally when a serious fault occurs. This system consists of a central processing unit (TSC‐P), and four local units for fault detection (TSC‐C), and seventeen units for generator shedding (TSC‐T). The TSC‐P selects optimal generators to be shed for stabilization based on on‐line transient stability calculation for contingencies at 500 kV lines and buses every five minutes. The results are transmitted to the TSC‐Cs periodically. Should any fault occur, only one TSC‐C will detect the fault occurrence and send control signals to the TSC‐Ts which actually generate shedding signals. To realize the TSC system, essential are fast stability evaluation methods for a large number of contingencies and effective selection methods of optimal generators to be shed for stabilization. This paper presents total algorithms applied in the TSC‐P, the results of algorithm verification tests using a prototype system combined with a large‐scale analog simulator, and the characteristics of the actual system.