Continuously regulated series capacitor

A new method for the continuous regulation of series reactive power compensation is presented. The two control circuits proposed consist of capacitor banks inserted in a transmission line and are controlled by bidirectional gate turn-off switches. The level of compensation is controlled by varying t...

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Bibliographic Details
Published in:IEEE transactions on power delivery 1993-07, Vol.8 (3), p.1348-1355
Main Authors: Karady, G.G., Ortmeyer, T.H., Pilvelait, B.R., Maratukulam, D.
Format: Article
Language:English
Subjects:
240200 - Power System Networks, Transmission & Distribution- (1990-)
CAPACITORS
CONTROL
Distributed parameter circuits
ELECTRICAL EQUIPMENT
ELECTRONIC CIRCUITS
Impedance
OSCILLATIONS
POWER DISTRIBUTION SYSTEMS
POWER TRANSMISSION AND DISTRIBUTION
Power transmission lines
Reactive power
SEMICONDUCTOR DEVICES
SEMICONDUCTOR SWITCHES
STABILITY
Surges
Switched capacitor circuits
SWITCHES
SWITCHING CIRCUITS
Transient analysis
Zero voltage switching
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Summary:A new method for the continuous regulation of series reactive power compensation is presented. The two control circuits proposed consist of capacitor banks inserted in a transmission line and are controlled by bidirectional gate turn-off switches. The level of compensation is controlled by varying the on and off time of the GTO switch. To avoid current surges the switch is turned on before the capacitor voltage is zero. The feasibility of this method is verified by transient analysis and by measurements on a small-scale model. The advantage of the proposed method is the fast and continuous regulation of series compensation. A circuit can be built with available components and can be used for impedance control and oscillation reduction.< >
ISSN:0885-8977
1937-4208
DOI:10.1109/61.252661