DocumentCode :
3268180
Title :
Evaluation of the grounding circuit measurements for stator ground-fault location of synchronous generators
Author :
Blanquez, Francisco R. ; Rebollo, Emilio ; Platero, Carlos A.
Author_Institution :
Electr. Eng. Dept., Polytech. Univ. of Madrid, Madrid, Spain
fYear :
2013
fDate :
1-3 Nov. 2013
Firstpage :
229
Lastpage :
233
Abstract :
Locating stator-winding ground faults accurately is a very difficult task. In this paper the grounding circuit measurements are evaluated in order to obtain information about the stator ground-fault location in synchronous generators. In power generators grounded through a high impedance, the relation between the neutral voltage and the phase voltage provide a first estimation of the fault location. The location error by using this ratio depends on the fault resistance and the value of the capacitance to ground of the stator winding. However, the error added by ignoring the value of the fault resistance is the most relevant term. This location estimation and the location error have been evaluated through the data of a real synchronous machine.
Keywords :
capacitance; earthing; electric resistance; fault location; stators; synchronous generators; capacitance; fault location error; fault resistance; grounding circuit measurements; neutral voltage; phase voltage; power generator; stator winding ground fault location estimation; synchronous generator; synchronous machine; Circuit faults; Estimation; Grounding; Radio frequency; Resistance; Stator windings; Stator ground fault; fault location; generator protection;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Environment and Electrical Engineering (EEEIC), 2013 13th International Conference on
Conference_Location :
Wroclaw
Print_ISBN :
978-1-4799-2802-6
Type :
conf
DOI :
10.1109/EEEIC-2.2013.6737913
Filename :
6737913
Link To Document :
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