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On-line monitoring system for use with electrical assets and method of operating the same

  • US 9,052,350 B2
  • Filed: 07/31/2012
  • Issued: 06/09/2015
  • Est. Priority Date: 07/31/2012
  • Status: Active Grant
First Claim
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1. A system configured to monitor an operating electrical device that is coupled to an electric power source through at least one electric power transmission channel, the electric power source configured to transmit electric power at a first frequency and a first voltage, wherein the operating electrical device includes at least a portion to be tested, said system comprising:

  • a testing channel configured to be coupled to the portion of the operating electrical device to be tested and the at least one electric power transmission channel, said testing channel comprising at least one of a test signal injection portion and a test signal recovery portion;

    a signal generator coupled to said testing channel, said signal generator configured to inject testing signals into said testing channel at a second frequency that is greater than the first frequency, said signal generator coupled to said testing channel through said at least one of said test signal injection portion and said test signal recovery portion; and

    at least one apparatus magnetically coupled to the at least one electric power transmission channel, wherein said at least one magnetically coupled apparatus is configured to induce a first impedance to the electric power at the first frequency and induce a second impedance to the test signals at the second frequency, wherein the second impedance is greater than the first impedance.

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