Digital partial discharge detection systems, in addition to inheriting the advantages of their predecessors, also feature fully automatic calibration, automatic synchronization, automatic voltage recording, and automatic measurement, storage, and playback functions. They can measure various partial discharge parameters specified by the International Electrotechnical Commission (IEC)-270.
High-frequency partial discharge detection systems comprehensively utilize computer technology, high-frequency technology, analog electronics technology, high-speed signal acquisition technology, and digital signal processing and graphic display technology. Combined with anti-interference technology, they can automatically measure and analyze partial discharges in environments with strong interference.
Partial discharge testing systems have dual-channel simultaneous measurement capabilities, allowing for simultaneous measurement of multiple test samples or simultaneous multi-point measurement of a single test sample. This makes the diagnosis of discharge points in large transformers possible. This method has been applied to the detection of large transformers and online monitoring of partial discharges in transformers in substations.
