Method and means for damping supersynchronous oscillations in an

Details Method and means for damping supersynchronous oscillations in an Method and means for damping supersynchronous oscillations in an

1987-11-02

1989-02-28

Ro, Bentsu

Electrical transmission or interconnection systems

With harmonic filter or neutralizer

07102, 322 58, 361113, H02M 112, H02J 301

Patent

active

048088439

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: 2959738 (1960-11-01), Nagai
patent: 3535542 (1970-10-01), Gilsig
patent: 3881137 (1975-04-01), Thanawala
patent: 4292545 (1981-09-01), Hingorani
patent: 4355241 (1982-10-01), Hingorani
patent: 4429338 (1984-01-01), Becker et al.

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