Electricity: power supply or regulation systems – For reactive power control – Using impedance
Patent
1997-01-09
1999-06-01
Riley, Shawn
Electricity: power supply or regulation systems
For reactive power control
Using impedance
323210, 307105, G05F 170
Patent
active
059091053
ABSTRACT:
In an apparatus for control of controller equipment for damping power oscillations in a power line, the controller equipment is serially connected between a first connection point and a second connection point in the power line in an electric network for alternating current. The controller equipment is adapted to serially generate in the power line, dependent on a control order, a damping voltage for damping power oscillations in the power line. Controlling equipment receives sensed quantities of the power network and forms a phase deviation dependent on these quantities. The phase deviation is the difference between a phase angle of a first voltage at the first connection point and a phase angle of a second voltage at the second connection point. The controlling equipment forms the control order dependent on the time rate of change of a function of the phase deviation. The control order controls the controller equipment to generate the damping voltage which feeds an active power in the power line counteracting changes in active power in the power line which are associated with power oscillations.
REFERENCES:
patent: 4434376 (1984-02-01), Hingorani
patent: 4724333 (1988-02-01), Hedin
patent: 4999565 (1991-03-01), Nilsson
patent: 5032738 (1991-07-01), Vithayathil
patent: 5291120 (1994-03-01), Leowald et al.
patent: 5367197 (1994-11-01), Klerfors
Noroozian et al., Damping Of Power System Oscillations By Use Of Controllable Components, IEEE Transactions On Power Delivery, vol. 9, No. 4, Oct. 1994, pp. 2046-2054.
Olweg.ang.rd et al., Improvement of Transmission Capacity By Thyristor Controlled Reactive Power, IEEE Transactions on Power Apparatus And Systems, vol. PAS-100, No. 8, Aug. 1981, pp. 3930-3939.
Gronquist et al., Power Oscillation Damping Control Stategies For Facts Devices Using Locally Measurable Quantities, IEEE Transactions On Power Systems, vol. 10, No. 3, Aug. 1995, pp. 1598-1605.
Angquist et al., Power Oscillation Damping Using Controlled Reactive Power Compensation A Comparison Between Series And Shunt Approaches, IEEE Transactions On Power Systems, vol. 8, No. 2, May 1991, pp. 687-700.
Asea Brown Boveri AB
Riley Shawn
LandOfFree
Control of power networks does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Control of power networks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control of power networks will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-957036