Optimization of operating conditions of third harmonic ground-fault protection system of generator-transformer unit with two-states transverse parameters

Author

Zielichowski, Mieczyslaw ; Mydlikowski, Remigiusz

Author_Institution

Inst. of Electr. Power Eng., Wroclaw Univ. of Technol., Poland

Volume

19

Issue

2

fYear

2004

fDate

4/1/2004 12:00:00 AM

Firstpage

565

Lastpage

569

Abstract

Such an optimization analysis of the operating conditions of the ground-fault protection excited by the third harmonic voltage for the two-state system of the generator-transformer unit transverse parameters is presented in this paper. The analysis was made for a unit in which a change in its transverse branch parameters occurs as a result of generator breaker switching operations. The optimization analysis has shown that effective ground-fault protection of the generator stator windings is possible, regardless of the operating conditions of the generator breaker.

Keywords

AC generators; earthing; machine protection; optimisation; power system faults; power system protection; power transformer protection; stators; fault location; generator breaker switching operations; generator stator windings; generator transformer unit; operating conditions; optimization analysis; third harmonic ground fault protection system; two state transverse parameters; Capacitance; Circuit faults; Grounding; Harmonic analysis; Insulation; Power engineering; Power system protection; Resistors; Stator windings; Voltage measurement;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/TPWRD.2004.824397

Filename

1278410