"1) When a defect exists during partial discharge inside the power equipment, micro-discharge signals occur in the full bandwidth of tens of kHz to several GHz as the operating time passes, and these discharge signals leak out through electromagnetic wave signals radiated to the outside. This equipment automatically analyzes the cause of the defect by detecting electromagnetic waves leaked to the outside by partial discharge inside the circuit breaker and mold device using an external UHF (Ultra High Frequency) sensor, and electromagnetic waves carried in current such as cables using an HFCT (High Frequency Current Transformer) sensor.
2) Electromagnetic waves generated by partial discharge are electromagnetic pulses possessed by micro-charges locally distributed in the power equipment and are transmitted through media such as air or cables.
When partial discharge occurs due to local deterioration or poor connection status in the power equipment, micro-electromagnetic waves are transmitted through air or cables. At this time, the portable partial discharge diagnostic equipment detects the generated electromagnetic waves with convenient mobility and application of various sensors to diagnose the type and location of partial discharge. 3) PRPD(Phase Resolved Partial Discharge)
A method for diagnosing electromagnetic pulses generated by partial discharge by expressing the signal size according to phase [Ø]
[Amplitude] and number of times [N]
4) PRPS(Phase Resolved Pulse Sequence)
A method for diagnosing electromagnetic pulses generated by partial discharge by expressing the signal size according to phase [Ø]
[Amplitude] and number of times [N] and time information [Cycle]
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