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Abnormality diagnosing system and method for a high voltage power apparatus

  • US 5,214,595 A
  • Filed: 11/07/1991
  • Issued: 05/25/1993
  • Est. Priority Date: 05/16/1988
  • Status: Expired due to Term
First Claim
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1. An abnormality diagnosing system for a high-voltage power apparatus comprising:

  • means for detecting an oscillation signal from the high-voltage power apparatus of a frequency range of 200 Hz to 1500 MHz, said oscillation signal detecting means including at least two types of sensors selected from an acceleration sensor, acoustic emission sensor and radio frequency antenna sensor;

    means for analyzing the frequency components of the detected oscillation signal from said oscillation signal detecting means and generating a frequency spectrum indicative of spectral intensity to frequency;

    means for determining at least one type of an insulation abnormality, power supply abnormality and foreign matter among abnormalities existing inside of the high-voltage power apparatus on the basis of the frequency spectrum from said frequency analyzing means and for outputting at least one type of abnormality signal in accordance therewith.

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