Online Partial Discharge Monitoring system on GIS

About Online Partial Discharge Monitoring system on GIS

GISmonitor builds on more than 20 years of experience in online PD monitoring on rotating machines, transformers, cables, and especially GIS systems. It combines proven technology of the ICMmonitor with new processor technology and embedded hardware capabilities. The hardware core of the system has been optimized for parallel, real-time PD acquisition on multiple channels. Any UHF signal can be detected and digitized within microseconds. A separation of PD events from external disturbances or internal switching pulses is calculated in real-time and, therefore, an effective PD and alarm detection is given.

Each 8-channel acquisition plug-in board operates fully stand alone but can be combined with a virtually unlimited number of units, to monitor all PD sensors in one or even multiple GIS in parallel. A full 19" sub-rack carries 64 channels. A remote computer reads all data of the instruments via the high speed fiber optic LAN ring, providing communication redundancy. The GISmonitor indicates with on-board LEDs internal states and alarm conditions