Dynamic testing of loss of field protection

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1996

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Virginia Tech

Abstract

The thesis begins with a discussion of loss of field relaying principles, which is followed by a discussion of real-time playback systems. Loss of excitation protection has been implemented in General Electric’s EX2000 Digital Exciter. Through the use of EMTP, several different system disturbances are simulated. The EMTP files are then played back with the help of a real-time playback system. The signals from the playback system are then fed to the EX2000 and General Electric’s Digital Generator Protection (DGP) System, in order to compare the performances of both systems. The paper concludes by showing that the loss of excitation protection function in the EX2000 works identical to conventional protection systems.

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