On-line monitoring system of indoor SF6 (sulfur hexafluoride) gas of transformer substation

The utility model relates to an on-line monitoring system of indoor SF6 (sulfur hexafluoride) gas of a transformer substation. The on-line monitoring system of the indoor SF6 gas of the transformer substation is characterized by comprising a central processer, a gas detector, a human body sensor, a fan controller, an acousto-optic warning apparatus and a last-stage monitoring system, wherein the gas detector, the human body sensor, the fan controller, the acousto-optic warning apparatus and the last-stage monitoring system are respectively connected with the central processer; and according to the on-line monitoring system, the real-time monitoring can be carried out on the leakage condition of SF6 insulating gas of SF6 combined electrical equipment and the oxygen content in the air in the transformer substation, the real-time monitoring on the unattended transformer substation and the switch gear room is realized, the management efficiency is improved, and the maintenance system is completed. According to the on-line monitoring system of the indoor SF6 gas of the transformer substation, the real-time monitoring is carried out to the indoor SF6 concentration of the transformer substation to automatically warn and exhaust so as to condition the air, not only the safety of the operation of the unattended transformer substation is improved, but also the personal safeties of daily patrollers and maintainers are reliably guaranteed.