Title :
Zero-sequence voltages in unit-connected generator for different methods of grounding generator neutral
Author_Institution :
ABB Corp. Res., Krakow, Sweden
Abstract :
In this paper, the influence of parameters of the generator and transformer, the additional capacitance to ground of the generator breakers on the zero-sequence voltages in generators during faults in the stator winding and the power system was determined. The analysis of zero-sequence components was carried out for unit-connected generators of power up to 1200 MVA. The voltage zero-sequence components feeding the measuring element of the protections were determined at faults along the whole length of the generator stator winding
Keywords :
earthing; electric generators; electrical faults; machine protection; machine theory; power transformer protection; stators; generator breaker capacitance; generator neutral grounding methods; power system; stator winding faults; unit-connected generator protection; voltage zero-sequence components; zero-sequence voltages;
Conference_Titel :
Developments in Power System Protection, 2001, Seventh International Conference on (IEE)
Conference_Location :
Amsterdam
Print_ISBN :
0-85296-732-2
DOI :
10.1049/cp:20010208
