GIS partial discharge online monitoring system
1) Minimum measurement accuracy: -75dBm or (2 meters from the discharge source) Maximum pulse resolution: 10us
2) Ultra-high frequency (UHF) range: 300MHz-1500MHz standing wave ratio Z< 2
3) Measuring period: 2 seconds (adjustable)
4) Display mode: discharge amplitude Q, discharge phase φ, discharge times N, three-dimensional spectrum N-q-φ, amplitude-time relationship, amplitude-phase relationship, discharge times-phase relationship
5) Using SART neural network algorithm, it can identify 4 basic typical discharge types: suspended conductive particle discharge, tip burr discharge, insulator contaminated surface discharge, internal air gap discharge.
6) IED interface and communication protocol: RJ45 network port, IEC61850 communication protocol