Method and system for realtime performance recovery advisory for centrifugal compressors

Abstract

A system and computer-implemented method for generating real-time performance recovery advisories for a centrifugal compressor of a fleet of centrifugal compressors are provided. The method is implemented using a computer device coupled to a user interface and a memory device and the method includes determining a performance deviation of the compressor using a determined actual performance of the compressor and a predicted performance of the compressor, comparing the performance deviation to a predetermined threshold range of performance deviation, and recommending to a user at least one source for the performance deviation, the recommendation including a value of the performance recovery available for each source.

Description

FIELD OF THE INVENTION[0001]This description relates to generally to mechanical / electrical equipment operations, monitoring and diagnostics, and more specifically, to systems and methods for automatically advising operators of anomalous behavior of machinery.BACKGROUND OF THE INVENTION[0002]Centrifugal compressors are dynamic machines and highly sensitive to the system resistance and impeller velocities. The system resistance and impeller velocities are governed by the gas composition and operating conditions. Performance of these machines can deteriorate due to poor operating condition or due to flow passage changes (deposition). Accurate performance estimation, interpretation and from that, providing follow-up action (advisory) still remains a challenging task mainly due to wide variation in operating conditions within OEM envelope and limitation of static baseline or static OEM operating envelope.[0003]Monitoring the performance of machinery, such as centrifugal compressors perfo...

AI Technical Summary

Benefits of technology

The patent describes a computer-implemented method and system for generating real-time performance recovery advisories for a centrifugal compressor of a fleet of centrifugal compressors. The method involves determining a performance deviation of the compressor using an actual performance and a predicted performance, comparing the performance deviation to a predetermined threshold range of performance deviation, and recommending to a user at least one source for the performance deviation. The system includes a performance recovery rule set that includes an actual design signature of the machine, the signatures received from the OEM of the machine, and a relational expression of a real-time data output relative to a real-time data input. The method and system can help improve performance recovery of the compressor by providing real-time recommendations for repairing or replacing various parts of the compressor based on the performance deviation.

Problems solved by technology

Performance of these machines can deteriorate due to poor operating condition or due to flow passage changes (deposition).

Accurate performance estimation, interpretation and from that, providing follow-up action (advisory) still remains a challenging task mainly due to wide variation in operating conditions within OEM envelope and limitation of static baseline or static OEM operating envelope.

Known monitoring systems lack detailed design information that would permit them to not only monitor the centrifugal compressor but also analyze a degradation of performance of the compressor on-line in real-time and recommend steps required to recover the performance degradation.

Moreover, current monitoring systems do not typically adjust thresholds based on compressor load or other operating conditions.

Moreover, rapidly changing operational conditions or very slowly changing operational conditions may make it difficult for an operator to recognize anomalous conditions or what operational changes can be made to mitigate the anomalous conditions.

Once a degradation in performance is identified, operators have a limited ability to use original design parameters to restore the centrifugal compressor performance back to optimum operating conditions.

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