A novel technique for measuring grounding capacitance and grounding fault resistance in ineffectively grounded systems

Author

Zeng, Xiangjun ; Yin, Xianggen ; Chen, Deshu

Author_Institution

Dept. of Electr. Power Eng., Huazhong Univ. of Sci. & Technol., Wuhan, China

Volume

21

Issue

3

fYear

2001

fDate

3/1/2001 12:00:00 AM

Firstpage

65

Lastpage

67

Abstract

A principle for resonance measurement based on injecting resonant frequency signal is presented in this paper. The grounding capacitance of lines and equipment and the grounding fault resistance can be measured online in ineffectively grounded systems. Petersen-coil automatic tuning is implemented, and 100% stator grounding fault protection for generator stator windings is also proposed. The prototype for Petersen-coil tuning has been tested on networks for many years. In addition, the new method for generator stator grounding fault protection is verified by simulation

Keywords

capacitance measurement; earthing; electric generators; electric resistance measurement; electrical faults; machine protection; machine testing; Petersen-coil automatic tuning; generator stator windings; grounding capacitance measurement; grounding fault resistance measurement; ineffectively grounded systems; resonance measurement; resonant frequency signal injection; stator grounding fault protection; Capacitance measurement; Electrical resistance measurement; Frequency measurement; Grounding; Protection; Prototypes; Resonance; Resonant frequency; Stator windings; Tuning;

fLanguage

English

Journal_Title

Power Engineering Review, IEEE

Publisher

ieee

ISSN

0272-1724

Type

jour

DOI

10.1109/39.911363

Filename

911363