Discrimination of corona and surface discharge patterns in soy seed-based transformers insulation oil

This research, the common condition monitoring technique, Partial Discharge (PD) detection was applied to laboratory test configurations that simulate soy seed based oil-filled transformer insulation system. The soy seed-based oil insulation system was found to have significantly different test results when compared to the mineral oil insulation system. Discharge activities in soy seed based oil insulation were monitored using the standard IEC60270 phase resolved analysis method. Through the PD detection method, corona and surface discharge phase-resolved patterns in soy seed based insulation and their statistical parameters were identified. This enabled discrimination between these two types of discharge activities.