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Method and apparatus for compressor control and operation in industrial gas turbines using stall precursors

  • US 6,506,010 B1
  • Filed: 04/17/2001
  • Issued: 01/14/2003
  • Est. Priority Date: 04/17/2001
  • Status: Active Grant
First Claim
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1. A method for monitoring and controlling a compressor having at least one stage, comprising the steps of:

  • controlling the compressor in accordance with a predetermined operating line parameter;

    monitoring the pressure of gases flowing through the at least one stage of the compressor;

    determining at least one stall precursor value from the monitored pressure in the at least one stage;

    comparing the at least one stall precursor value with predetermined baseline values to estimate compressor degradation;

    performing a corrective action to mitigate compressor degradation to maintain a pre-selected level of compressor operability, wherein the corrective action includes varying the operating line parameter of the compressor; and

    iterating said corrective actions performing step until the monitored pressure lies within a predetermined threshold.

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