Sub-synchronous resonance filters for series capacitors

Details Sub-synchronous resonance filters for series capacitors Sub-synchronous resonance filters for series capacitors

1996-03-28

1999-01-26

Shoop, Jr., William M.

Electrical transmission or interconnection systems

With harmonic filter or neutralizer

333167, 333172, 333175, 333176, H03H 700

Patent

active

058641858

ABSTRACT:
A passive filter device for a capacitor in series with a substantially inductive transmission line of an electric transmission system is disclosed. The passive filter device comprises a double-loop RCL filter in parallel with the series capacitor. At power frequency, the filter device allows the power frequency current to pass through the series capacitor with minimum power losses. At sub-synchronous resonance frequencies, the passive filter device provides bypassing of the series capacitor with maximum selectivity of the RCL filter.

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