Plausibility of incoherent detection for radiometric monitoring of insulation integrity in HV substations

摘要

The work reported here is part of a PhD research relates to the development of a new type of radiometric system applied to detection of partial discharges signals. A simulation model for the radiometric transmission of a partial discharge pulse is presented. The model is based on a replay model, which acts as a source, which is based on real data to simulate the pulses. The structure considers losses due to the free space transmission path and interferences caused by carriers from broadcast transmissions. A receiver, focus of this research, is based on a radiometer structure, which includes an amplifier, a filter and an envelope detector to minimize the necessity of a high sample rate ADC.