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METHOD AND SYSTEM FOR PREDICTING REMAINING LIFE FOR MOTORS FEATURING ON-LINE INSULATION CONDITION MONITOR

  • US 20060259271A1
  • Filed: 05/12/2005
  • Published: 11/16/2006
  • Est. Priority Date: 05/12/2005
  • Status: Active Grant
First Claim
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1. A method for determining reliability and a remaining time before failure with statistical confidence for a motor system, the method comprising:

  • acquiring historical motor data corresponding to the motor system in a computer system;

    obtaining operational parameter data from sensors at the motor system, the sensors including a tan delta sensor;

    uploading the operational parameter data to the computer system;

    performing failure analysis based on a composite of reliability probability distributions corresponding to predetermined sub-populations of historical motor system failure causes;

    developing a causal network for modeling reliability of one or more motor system components and assessing motor system component condition based on the causal network; and

    performing an integrated causal network and reliability analysis of the motor system, wherein results from the performing failure analysis are integrated with results from the assessing motor system component condition based on the causal network to compute a quantitative value for a time remaining before failure with an ascertained statistical confidence.

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