The invention discloses an ultrasonically local discharging metering
system under an onsite environment. The
system comprises a background control platform and a far-end measuring device, wherein the background control platform comprises an upper computer and a first optical emitting receiving module; the upper computer is connected with the first optical emitting receiving module; the far-end measuring device comprises a second optical emitting receiving module, a standard
signal generating module, a standard
signal modulating module, a
broadband power amplifying module, an impedance matcher, an ultrasonic
transducer, a standard sound sender, a
broadband sound emitting collecting module, a digital
encoder and a far-end battery power supply module. The ultrasonically local discharging metering
system under the onsite environment provided by the invention can enhance the
technical management capacity for the accuracy and reliability of ultrasonic local discharging overhaul measuring data, can efficiently monitor the reliability of the measuring data of an electrifying
detector and an online monitoring device in a running process and can monitor the accuracy and reliability of the measuring data of an ultrasonic local discharging online monitoring device.