Title :
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
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;
Journal_Title :
Industry Applications, IEEE Transactions on
