The SF6 gas concentration online monitoring and alarm system is mainly used for real-time online monitoring of SF6 gas concentration, oxygen content, environmental temperature and humidity parameters in GIS rooms and SF6 switch rooms. The measurement results are transmitted digitally through a bus to accurately and timely grasp the on-site environmental conditions. It can also be linked to on-site fans for exhaust treatment in various ways such as automatic, timed, and manual, ensuring the personal safety of inspection personnel.

The GIS partial discharge online monitoring system can monitor the partial discharge of high-voltage electrical equipment such as GIS in real time during operation, and provide timely warnings for insulation abnormalities and discharge faults of the equipment, achieving digitalization of substation maintenance. Mainly used for GIS equipment of various voltage levels.

The lightning arrester online monitoring system can monitor the full current, resistive current, capacitive current, lightning strike frequency, and lightning strike time of the lightning arrester in real time, and can achieve real-time monitoring of the insulation condition of high-voltage electrical equipment.

The current detection of the transformer DC bias online monitoring system adopts an open-loop current sensor, which realizes a fully isolated sampling method. Advanced microprocessor technology and transient parameter testing technology are used for linearization processing and calculation; By real-time online monitoring of the AC and DC currents at the neutral point of the transformer, analyzing and fitting the monitored data, and combining it with on-site working conditions, hidden dangers in the transformer can be detected in a timely manner to avoid accidents.

The transformer core/clamp grounding current monitoring device is used to monitor the grounding fault current of the transformer core and clamp, which can achieve continuous and online monitoring of the core grounding current. Through monitoring, the insulation condition of the equipment can be monitored in real time, and faults such as internal insulation moisture or damage, multi-point grounding of the core, foreign objects in the box, and oil sludge deposition in the tank can be detected in a timely manner. Early prevention and handling of accidents. More importantly, it can provide reliable data basis for the status maintenance of such equipment.

The GIL (GIS) expansion joint deformation status online monitoring system adopts LINUX operating system for IoT network shutdown, which has the advantages of high energy efficiency, low cost, low power consumption, strong data computing and control capabilities, etc; The motherboard interface is rich and has strong scalability. It supports IEC61850, 104 protocol, standard MODBUS protocol for communication protocols, and can also quickly and conveniently respond to users' customized private protocol needs.

The intelligent control system for operating environment is designed to improve the safety and reliability of substation equipment and enhance the working environment of substations. The application system integrates sensor technology, computer automatic control technology, displacement ventilation technology, and numerical simulation and calculation of computational fluid dynamics (CFD) in the field of heating, ventilation, and air conditioning (HAVC). It is of great significance to integrate all elements of the power distribution room, such as air conditioning, fresh air, access control, dynamic environment monitoring, remote control, centralized management, water leakage, smoke detection, open flames, network video, etc., to solve the environmental problems of enclosed spaces such as substations, effectively improve the operating conditions of substation equipment, significantly reduce the probability of substation equipment failure, significantly reduce the probability of creepage and arc flash, and avoid unnecessary losses.

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