Electrical transmission or interconnection systems – With harmonic filter or neutralizer
Patent
1985-04-10
1988-02-09
RO, Bentsu
Electrical transmission or interconnection systems
With harmonic filter or neutralizer
307102, 322 58, 361113, H02M 112, H02J 301
Patent
active
047243333
ABSTRACT:
Damping of supersynchronous oscillations in an ac power system is accomplished by a damping circuit connected between a power line and a system neutral potential. The damping means includes a tuned circuit having a resonant frequency above the system operating frequency. Preferably, the tuned circuit further has an antiresonant frequency at the system frequency. The supersynchronous damping circuit in accordance with the invention can be used with subsynchronous damping circuits known in the prior art to enhance the damping of oscillations in the ac power system.
REFERENCES:
patent: 3555291 (1971-01-01), Dewey
patent: 3813593 (1974-05-01), Tice et al.
patent: 4139723 (1979-02-01), Havas
patent: 4331882 (1982-05-01), Hingorani
patent: 4355241 (1982-10-01), Hingorani
patent: 4434376 (1984-02-01), Hingorani
patent: 4551780 (1985-11-01), Canay
Robert L. Boylestad "Introductory Ciruit Analysis", 3rd Ed., Charles F. Merril Publishing Co., Columbus, Ohio 1977, p. 561.
Electric Power Research Institute
Ro Bentsu
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