An Arcless Deexcitation Device for Hydro-generators
The increase in single unit capacity of hydroelectric generators puts forward higher requirements for reliability of generator deexcitation system.An arcfree deexcitation device is proposed to address the problem of deexcitation failure in an energy transfer deexcitation system composed of a deexcitation switch and a nonlinear deexcitation resistor.This de-vice changes instantaneous output voltage of the rectifier bridge by adjusting controll angle of the rectifier bridge,thereby improving reliability of synchronous generator deexcitation system.The effectiveness and practicality of the proposed de-vice are verified through the demagnetization timing test.
hydro-generatordeexcitation switcharcless deexcitationenergy transfer demagnetization
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维普
