One of the main tools for monitoring the condition of high voltage equipment is the measurement of partial discharges(PD).The electromagnetic(EM)radiation originated from this degradation phenomenon can be captured by...One of the main tools for monitoring the condition of high voltage equipment is the measurement of partial discharges(PD).The electromagnetic(EM)radiation originated from this degradation phenomenon can be captured by various types of ultra‐high fre-quency(UHF)antennas carefully designed and optimised for specific frequency bands.However,the presence of environmental noise may limit the use of this technique.Different types of monopole antennas normally used in UHF PD measurement have been evaluated in order to validate the performance of a novel separation technique of EM sources.Accordingly,a new separation technique based on the energy ratio of the captured signals was developed,considering noise interferences.The results revealed that the new technique allows an adequate separation,even when three sources act simultaneously.展开更多
文摘One of the main tools for monitoring the condition of high voltage equipment is the measurement of partial discharges(PD).The electromagnetic(EM)radiation originated from this degradation phenomenon can be captured by various types of ultra‐high fre-quency(UHF)antennas carefully designed and optimised for specific frequency bands.However,the presence of environmental noise may limit the use of this technique.Different types of monopole antennas normally used in UHF PD measurement have been evaluated in order to validate the performance of a novel separation technique of EM sources.Accordingly,a new separation technique based on the energy ratio of the captured signals was developed,considering noise interferences.The results revealed that the new technique allows an adequate separation,even when three sources act simultaneously.
