DEVELOPMENT AND APPLICATION OF SF6 GAS DENSITYON-LINE MONITORING DEVICE

摘要

Adopting the sensor technology and digital circuits, a digital SF6 gas density on-linemonitoring device is developed and connected into the integrated automation system ofsubstation to realize remote and on-line monitoring. The new device may efficientlysolve the problem that currently used mechanical density relay fails to adapt real timemonitoring of equipment operation state in an unmanned substation, benefitingreconditioning of circuit breaker state and safe and steady operation of electric networks.