Patent ID: 11923096
Assignee: HITACHI ENERGY LTD
Field: Measurement (Instruments)
Classification: CPC G  H  Y | IPC G  H

Claim 10:
11. A method for performing an inspection of a machine, comprising:
providing a plurality of status interrogation systems on an inspection vehicle, wherein the plurality of status interrogation systems are operative to capture inspection data regarding a plurality of inspection procedures to be performed on the machine;
immersing the inspection vehicle within a dielectric liquid medium inside a housing of the machine;
operating a base station to wirelessly direct a maneuvering of the inspection vehicle within the machine and to wireles sly direct the plurality of inspection procedures of the inspection vehicle using the plurality of status interrogation systems while immersed within the dielectric medium,
wherein the plurality of status interrogation systems includes a magnetometer, further comprising sensing a magnetic field strength in the machine using the magnetometer while the inspection vehicle is immersed within the dielectric liquid medium,
wherein the plurality of status interrogation systems includes an ultrasound sensor, further comprising measuring a transformer wall thickness while the inspection vehicle is immersed within the dielectric liquid medium using the ultrasound sensor, and
wherein the plurality of status interrogation systems includes more than two microphones operative to sense sound waves associated with a partial discharge event.