Device releasably couplable to an electric asset, and a method for obtaining identification of at least one electric asset and information on partial discharge experienced by the at least one electric asset

A method for obtaining identification of at least one electric asset and information on partial discharge experienced by the at least one electric asset, the method comprising:

• sending, by an external interrogator, an interrogation signal to at least one device, each device releasably coupled to each corresponding electric asset;
• detecting, by each device, the partial discharge from the corresponding electric asset;
• generating, by each device, a backscattered signal comprising an ID code uniquely representative of a location of the device coupled to the corresponding electric asset and a pulsed signal representative of a presence or absence of the detected partial discharge, wherein the device comprises a time-domain based RFID tag comprising a delay line, and wherein the step of generating the backscattered signal comprises providing, by one or more discontinuities of the delay line, one or more unique codes;
• and using a unique code as the ID code;
• and
• reading, by an external reader, the backscattered signal to obtain identification of the corresponding electric asset and information on partial discharge experienced by the corresponding electric asset.

A device releasably couplable to an electric asset, the device comprising:

• a sensor configured to detect partial discharge from the electric asset and generate a pulsed signal representative of a presence or absence of the detected partial discharge;
• and
• a time-domain based RFID tag electrically coupled to the sensor, the time-domain based RFID tag configured to provide an ID code uniquely representative of a location of the device when coupled to the electric asset,
• wherein the device is configured to generate, upon interrogation by an external interrogator, a backscattered signal comprising the ID code and the pulsed signal, and the generated backscattered signal is to be read by an external reader,
• the sensor comprises:
• at least one sensing coil for detecting the partial discharge;
• and
• at least one state-change component connected in parallel to the at least one sensing coil and operable to generate the pulsed signal, the at least one sensing coil comprising a plurality of sensing coils configured to operate at different resonant frequencies, each resonant frequency separated apart from another, and to provide an extended bandwidth for the sensor, the extended bandwidth being dependent on a spread of the different resonant frequencies, and
• the sensor forms a terminating end of the device.