| 摘要 |
<p>The present invention relates to a system for diagnosing intelligent arc and corona discharge of a distributing board by using ultrasonic signals diagnosing the discharge state of an arc or a corona of a housing comprising the distributing board, a vibrating device controlling board, a high-tension panel, a low-tension panel, and a panel board. The present invention comprises a sensor unit which touches or is installed near equipment positioned inside the housing and comprises a plurality of ultrasonic sensors detecting ultrasonic waves generated by arc or corona discharge and a monitoring device which calculates detail component coefficients of a plurality of levels by applying multi-scale analysis for ultrasonic signals detected in the sensor unit, resets the detail component coefficient by removing a noise component through correlation of the detail component coefficients between the levels, calculates a specific vector of each level from the reset coefficients, classifies the discharge types of the ultrasonic signals through the specific vector, and comprises a problem determination unit which controls the state of the housing according to an identification and classification result. The present invention is provided to extract transient signals in which noise is removed through the signal correlation of the multi-scale analysis coefficients and generate the specific vector by using the coefficients of transient signals, thereby accurately and simply extracting, classifying, and diagnosing the feature of the arc or corona discharge.</p> |
