Application of VHF Antennas for Partial Discharge Detection in High Voltage Equipment: Case Study

Among the main techniques for detecting and classifying partial discharges in high-voltage equipment currently studied, the radiometric method stands out, based on the application of UHF sensors. However, using UHF sensors for partial discharge detection requires the use of sophisticated acquisition systems, meaning robust systems with high sampling rates and processing capacity. In this context, the use of VHF sensors for partial discharge detection and classification shows great promise. Utilizing a frequency range lower than UHF allows for a decrease in the resources required for detection and processing of the electromagnetic signals produced by partial discharges. This study evaluates the application of VHF sensors for partial discharge detection in high-voltage equipment, aiming to reduce the acquisition and processing requirements necessary for partial discharge monitoring.