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Distributed temperature sensing system for stator windings

  • US 4,827,487 A
  • Filed: 12/11/1987
  • Issued: 05/02/1989
  • Est. Priority Date: 12/11/1987
  • Status: Expired due to Fees
First Claim
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1. Method for monitoring temperature within connected coil sections in a stator core of an electric generator wherein each coil section comprises a plurality of arrays of electrical conductors, the method comprising the steps of:

  • forming an aperture extending lengthwise through at least one of the electrical conductors to create at least one hollow core conductor in each array of conductors in each coil section;

    forming a continuous acoustic waveguide by interconnecting corresponding ones of the hollow core conductors in each of the coil sections of a coil winding;

    transmitting an acoustic probe signal into a first end of the waveguide;

    detecting the transmitted and a reflected probe signal; and

    analyzing the detected signal for determining temperature along the hollow core conductor.

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