Electrical transmission or interconnection systems – Plural load circuit systems – Plural sources of supply
Patent
1996-01-01
1998-06-02
Shoop, Jr., William M.
Electrical transmission or interconnection systems
Plural load circuit systems
Plural sources of supply
307 31, 364492, H02J 906
Patent
active
057604924
ABSTRACT:
In a control system for a power transmission and distribution system, a plurality of distributed power supplying and receiving units each including a control unit are provided and connected along a power distribution line. The power supplying and receiving unit function to generate active and reactive powers of fundamental and higher harmonic waves to supply and receive the same to and from the power distribution line. A first central control unit controls the power distribution line and is designed to store information relating to the configuration of the power distribution line, to collect information with regard to instant open and close conditions of respective disconnecting switches connected for sectioning the power distribution line, and with regard to current electrical quantities on the power distribution line. Individual control command signals specific to the respective power supplying and receiving units are produced based on the stored and collected information and the respective power supplying and receiving units are controlled so that a desired target condition of the power distribution line is achieved autonomously within the power distribution line through an optimum cooperation control of the units.
REFERENCES:
patent: 4475047 (1984-10-01), Ebert, Jr.
patent: 5191520 (1993-03-01), Eckersley
patent: 5574653 (1996-11-01), Coomer et al.
H. Akagi, "Trends in Active Power Line Conditioners", IEEE Transactions on Power Electronics, vol. 9, No. 3, May 1994, pp. 261-268.
"Semiconductor Power Convertor Circuit", Edited by Seimconductor Power Converting Method Investigating Committee for Japan Electrical Engineering Society, Published by Japan Electrical Engineering Society, 1987, (319 p. document--only front page, table of contents & Colophon of text attached).
Amano Masahiko
Imamura Yuzuru
Kanoi Minoru
Tanifuji Shinji
Watanabe Masahiro
Hitachi , Ltd.
Kaplan Jonathan S.
Shoop Jr. William M.
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