Using power measurements to diagnose degradations in motor drivepower systems: a case study of oilfield pump jacks

Author

McInroy, John E. ; Legowski, Stanislaw F.

Author_Institution

Dept. of Electr. Eng., Wyoming Univ., Laramie, WY, USA

Volume

37

Issue

6

fYear

2001

Firstpage

1574

Lastpage

1581

Abstract

A study of diagnostics of faults in motor drive-power systems is reported. The study focuses on oil-field pump jacks and includes basic analysis, computer simulation, full-scale laboratory emulation and measurements in the oil fields. Spectrum analysis of instantaneous power and current delivered to the electric motor is used for diagnosis. An original electronic system for conditioning the input instantaneous power and current is explained. A model for the pump jack and its common degradations is given. A full-scale load control system emulates measured pump-jack loads in the laboratory

Keywords

fault diagnosis; load regulation; machine testing; monitoring; motor drives; oil technology; power measurement; pumps; computer simulation; fault diagnosis; full-scale laboratory emulation; full-scale load control system; input instantaneous current conditioning; input instantaneous power conditioning; instantaneous power; motor drive power systems degradations diagnostics; oil fields measurements; oil-field pump jacks; power monitoring; spectrum analysis; Computer simulation; Degradation; Electric motors; Emulation; Laboratories; Lifting equipment; Load flow control; Petroleum; Power measurement; Power system modeling;

fLanguage

English

Journal_Title

Industry Applications, IEEE Transactions on

Publisher

ieee

ISSN

0093-9994

Type

jour

DOI

10.1109/28.968163

Filename

968163