Vernier control system for subsynchronous resonance mitigation

Details Vernier control system for subsynchronous resonance mitigation Vernier control system for subsynchronous resonance mitigation

1992-05-15

1993-07-13

Stephan, Steven L.

Electricity: single generator systems

Generator control

With means for suppressing, eliminating or minimizing...

307102, 307105, 323210, 323211, 323218, 361 58, H02K 1100

Patent

active

052277135

ABSTRACT:
A subsynchronous resonance mitigation system, including a method and apparatus, for damping undesirable subsynchronous resonance oscillations in a generator, which, if left unchecked, may damage the shafts of a turbine-generator set. A remote coupling apparatus, such as a thyristor controlled series capacitor (TCSC) system, a sourced inverter device, or a static phase shifter, is coupled to the generator by a transmission line. In response to a firing command, the coupling apparatus introduces subsynchronous resonance mitigating currents into the transmission line. Sensors monitor power line parameters and/or the generator speed, and in response thereto, a higher-level controller generates a voltage command. A vernier controller responds to the monitored power line parameters and the voltage command to provide the firing command to the coupling apparatus.

REFERENCES:
patent: 3813593 (1974-05-01), Tice et al.
patent: 4292545 (1981-09-01), Hingorani
patent: 4302715 (1981-11-01), Putman et al.
patent: 4311253 (1982-01-01), Putman et al.
patent: 4355241 (1982-10-01), Hingorani
patent: 4384246 (1983-05-01), Larsen et al.
patent: 4434376 (1984-02-01), Hingorani
patent: 4438386 (1984-03-01), Gyugyi
patent: 4451777 (1984-05-01), Gyugyi
patent: 4513240 (1985-04-01), Putman
patent: 4567423 (1986-01-01), Dobsa et al.
patent: 4607217 (1986-08-01), Bhargava
patent: 4695741 (1987-09-01), Takeda
patent: 4701689 (1987-10-01), Yuan et al.
patent: 4719554 (1988-01-01), Bertschi
patent: 4724333 (1988-02-01), Hedin
patent: 4733340 (1988-03-01), Mase et al.
patent: 4808843 (1989-02-01), Hedin
patent: 4825270 (1989-04-01), Satou et al.
patent: 4843513 (1989-06-01), Edris
patent: 4855664 (1989-08-01), Lane
patent: 4888676 (1989-12-01), Zurcher
patent: 4999565 (1991-03-01), Nilsson
patent: 5006784 (1991-04-01), Sonntagbauer
patent: 5032738 (1991-07-01), Vithayathil
Christl, et al., "Advanced Series Compensation with Variable Impedance," presented at EPRI FACTS Workshop, Cincinnati, Ohio, Nov. 14, 1990.
P. Wood, et al., "Study of Improved Load-Tap Changing for Transformers and Phase-Angle Regulators," EPRI Report No. EL-6079, Nov., 1988.
Hingorani et al., "Prototype NGH Subsynchronous Resonance Damping Scheme Part I--Field Installation and Operating Experience," IEEE Transactions on Power Systems PWRS-2, No. 4:1034-1039 (Nov. 1987).

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