Condition Monitoring of High Voltage Motors Utilizing Corona Camera to Determine the Precise Location of Insulation Surface Discharge as the Basis for Undertaking the Appropriate Repair

Partial discharge activity is an indication of an ‘incipient fault’ in high voltage insulation and is widely regarded as the best ‘early warning’ indicator of the deterioration of high voltage insulation [1]. Several technologies for detecting partial discharge had been developed and implemented however, to conduct precise maintenance on high voltage motor insulation, precise information is required, such as the type of partial discharge event that has occurred and the precise location where it has occurred. Online partial discharge, offline partial discharge monitoring, and corona camera inspection are employed. These three techniques combine and supplement one another to provide data on the characteristics and location of the partial discharge. Through obtaining this kind of information, we would be able to perform the appropriate repairs on the motor to reduce the likelihood of motor failure during motor in services. Based on a number of observations and comparisons using the instruments and equipment mentioned in this paper, we have determined that the comparative severity of partial discharge counts ranges from 0 to 32,000. Using this measurement method, the benchmark condition monitoring based on the corona camera can be evaluated further for repair planning and other strategic actions. Condition monitoring is a maintenance method by relying on trending data or data clusters from the same type of equipment, the same data collection method.