LossofExciation Protection for Synchronous （LossofExciation保护同步）.pdf

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LossofExciation Protection for Synchronous （LossofExciation保护同步）.pdf

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LossofExciation Protection for Synchronous （LossofExciation保护同步）

GER-3183 LOSS OF EXCITATION PROTECTION FOR MODERN SYNCHRONOUS GENERATORS John Berdy General Electric Company Schenectady, New York ABSTRACT system conditions. This paper discusses the results of this study and provides guidance on the applica- This paper presents the results of a study into tion of loss of excitation protection. the application and performance of the offset mho distance relay for the loss of excitation pro- REVIEW OF RELAY CHARACTERISTICS tection of synchronous generators. Included is AND SETTINGS information on the loss of excitation characteris- tics of modern generators, on relay performance The offset mho loss of excitation relay is a single during transient swings and low frequency dis- phase, single element distance relay which isapplied turbances and on generator protection.