| Title |
Impulse Noise Cancellation Technology for DC Partial Measuring Devices Compling with IEC60270 standard |
| Authors |
최광식(Kwang-Sik Choi) ; 조재철(Jae-Cheol Cho) |
| DOI |
https://doi.org/10.5370/KIEE.2023.72.9.1076 |
| Keywords |
DC Partial Discharge; High Speed Analog Circuit; Noise Pulse; Background Noise Level; TQ-Matrix |
| Abstract |
The IEC60270 standard requires a highly reliable measurement system without errors caused by noise pulses and background noise levels in DC partial discharge diagnosis. Since the partial discharge signal is an impulse signal, and the air corona and the plasma discharge noise pulse are also impulse signals, the two signals are similar, which hinders partial discharge diagnosis. Therefore, in order to measure DC partial discharge with high reliability without interference, there is a need for a device that completely removes impulse noise pulses having similar characteristics to partial discharge and is not affected by the background noise level.
To this end, in this paper, an impulse noise pulse canceling device equipped with two types of high-speed analog-digital hybrid circuits were developed, and through three types of tests, it was verified that it was accurate in the partial discharge measurement process and highly reliable due to its high signal-to-noise ratio. |