Development of a technique for on-line detection of shorts in field windings of turbine-generator rotors: circuit design and testing

Author

Kulkarni, Amol S. ; El-Sharkawi, Mohamed A. ; Marks, Robert J. ; Andexler, George ; Xing, Jian ; Kerszenbaum, Isidor

Author_Institution

Dept. of Electr. Eng., Washington Univ., Seattle, WA, USA

Volume

15

Issue

1

fYear

2000

fDate

3/1/2000 12:00:00 AM

Firstpage

8

Lastpage

13

Abstract

A technique for online detection of incipient faults in the windings of turbine-generator rotors has been developed based on the twin signal sensing method. This paper describes the development of power electronic circuits for generation of the twin signals and detection of the reflected signals. The design and fabrication of a lab model to test this technique is summarized along with results of laboratory experiments. The issues involved in using the developed technique for practical applications are addressed and the limitations of the technique are summarized

Keywords

electric current measurement; electric sensing devices; fault diagnosis; machine testing; monitoring; rotors; short-circuit currents; turbogenerators; applications; laboratory experiments; online field winding short-circuits detection; power electronic circuits; reflected signals detection; turbine-generator rotors; twin signal sensing method; twin signals generation; Circuit faults; Circuit testing; Electrical fault detection; Fabrication; Fault detection; Power electronics; Power generation; Rotors; Signal detection; Signal generators;

fLanguage

English

Journal_Title

Energy Conversion, IEEE Transactions on

Publisher

ieee

ISSN

0885-8969

Type

jour

DOI

10.1109/60.849109

Filename

849109