To investigate the effects of fast transient electromagnetic progress generated by disconnector switching on electronic transformer

we develop an electromagnetic compatibility detection system of electronic transformer based on 500 k V AIS disconnector switching. In the system

the fast transient current and voltage measuring system adopts Rogowski coil and capacitive voltage divider to be sensors. The sensors and data acquisition sections have good electromagnetic shielding property. Moreover

the fast transient current and voltage measuring system is calibrated

showing that the frequency bandwidth of the fast transient current measuring system is in the range of 1 Hz

1

0 MHz

the frequency bandwidth of the fast transient voltage measuring system is in the range of 0.1 H

z

3

0 MHz. These parameters meet the requirements of measurement. Test results of the experimental system prove that the detection system can measure the fast transient current and voltage induced by disconnector switching simultaneously

as well as output waveform of electronic transformer.The effects of fast transient electromagnetic progress generated by disconnector switching on electronic transformer can be realized by waveform intercomparison.