Harmonic impact testing on synchronous generator protection

In order to have proper operation of the "relay" protection devices, their behavior shall be studied and tested for different possible operational conditions. The harmonic spectrum in the supervised circuits may affect the protection functions. Harmonics can be generated in the primary cir...

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Bibliographic Details
Published in2017 15th International Conference on Electrical Machines, Drives and Power Systems (ELMA) pp. 288 - 291
Main Authors Bogdanov, Dimitar, Iliev, Rosen
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.06.2017
Subjects
Circuit faults
differential
Generators
Harmonic analysis
harmonics
IED
Power system harmonics
Power transformers
protection
Relays
Testing
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ISBN9781509066902
150906690X
DOI10.1109/ELMA.2017.7955450

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Summary:In order to have proper operation of the "relay" protection devices, their behavior shall be studied and tested for different possible operational conditions. The harmonic spectrum in the supervised circuits may affect the protection functions. Harmonics can be generated in the primary circuits by faults, non-linear loads, converters, etc. Harmonics can also be induced in the secondary circuits by electromagnetic interference paths, but this problem shall be eliminated with proper design of secondary protection and control circuits [10, 11]. The paper presents approached used to test percentage differential protection function in case of different harmonic content. Longitudinal differential protection function (ANSI 87) was subject of tests. Generator protection device was selected and the function was tested for different application cases. All experiments were conducted in the "Relay protection" laboratory of the Technical University-Sofia.
ISBN:9781509066902
150906690X
DOI:10.1109/ELMA.2017.7955450