Negative sequence current reduction for generator/turbine protection

The authors present a feasible method for negative sequence current reduction at the generator terminal through a special function static VAr compensator (SVC). A specially designed fixed-capacitor thyristor-controlled reactor SVC is used. Computer simulation and laboratory test results show that it...

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Bibliographic Details
Main Authors: Lee, W.-J., Ho, T.-Y., Liu, J.-P., Liu, Y.-H.
Format: Conference Proceeding
Language:English
Subjects:
Control systems
Delay
Equations
Inductors
Power generation
Protection
Reactive power
Static VAr compensators
Thyristors
Turbines
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Summary:The authors present a feasible method for negative sequence current reduction at the generator terminal through a special function static VAr compensator (SVC). A specially designed fixed-capacitor thyristor-controlled reactor SVC is used. Computer simulation and laboratory test results show that it can effectively reduce negative sequence current at a generator terminal. Since this compensation circuit is operated in an unbalanced mode, both characteristic and noncharacteristic harmonics will appear in the system; careful design of the harmonic filtering circuits is thus necessary.< >
DOI:10.1109/IAS.1993.299171