PT09 - Submersible pump condition monitoring using motor current signature analyses and vibration analyses comparison

Abstract

The paper further shows the real case studies, analyses and findings on Submersible Pumps. The article contrasts the similarities vs. differences and advantages vs. disadvantages of both methods and may be of value for engineers to understand the pros. and cons. of each technology.Vibration Analysis are widely used to detect faults on Submersible Pumps. Vibration Analysis has been implemented for the detection of malfunction mainly of mechanical and process origin. The recommended practice on Submersible Pumps is to take the vibration measurement at each bearing of the Submersible Pump, what is challenging.Motor Current Signature Analysis is suitable alternative as the method does not require any sensor installation on the Submersible Pumps itself and the measurement is carried out remotely in the motor control unit. Improved MCSA, Model-Based Voltage and Current Analyses is using a mathematical model of the relationship between dynamic current and voltage to identify electrical, mechanical or process problems. MBVI is especially attractive for inaccessible driven equipment and well suited for the monitoring of Submersible Pumps. The paper shows the real case studies on Submersible Pumps, such as Sea Water Lift Pumps,Sea Water Vaporizer Pumps and submerged Cryogenic Pumps.