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The power grid of the substation is related to various industries such as energy and industry. The safety of the substation affects all nerves of the society. It is very important to ensure the safety of the substation. With the development of science and technology and the advancement of research and development, Jiangsu Tangen Technology Co., Ltd. has further upgraded the substation inspection security system on the original basis, making the substation inspection security system simpler, safer, and more efficient. Practical and cost-effective.
Requirements overview
As an important part of the national energy strategic layout and an important link in the energy industry chain, the power grid is the carrier for the optimal allocation of national energy resources. The ultra-high voltage substations in various places are also the core components of the power grid system, and its safe production is related to the operation of the entire power grid. Safety and efficiency. The daily inspection of ultra-high voltage substations requires real-time positioning, video surveillance linkage, security alarm, help system, historical patrol inquiry, work assessment and other requirements. After years of application research and technology accumulation, Tangen Technology has launched a safety assurance system for substation inspection personnel based on high-precision real-time three-dimensional positioning, taking the lead in realizing the automatic information management of substation inspection.
Implementation plan
The safety assurance system for substation inspectors includes a high-precision real-time positioning system, a high-definition camera PTZ and an inspection safety assurance server system. The positioning part adopts 2.4GHz radar technology, which can cover the entire field by deploying a small number of monitoring points; inspectors, vehicles, and equipment wear positioning tags to achieve high-precision positioning of the entire station; gyroscopes and acceleration are integrated on the personnel tags. The sensor realizes high-precision 3D positioning, the position data is linked with video monitoring to realize automatic video tracking, and the combination with GIS realizes virtual reality monitoring; the safety assurance management software for inspectors customized for users provides rich functions such as abnormal alarm, work review, and historical traceability. .
Features
1. Real-time positioning and abnormal alarm: real-time positioning and recording of inspectors, vehicles, and equipment throughout the whole process, and real-time alarm reminders for abnormal conditions such as cross-border to ensure personnel safety.
2. Visualization of inspection management: By combining the real-time positioning of inspection personnel with video surveillance and 3D GIS, the visualization of inspection management is realized, and the inspection work can be effectively reviewed.
3. Three-dimensional space positioning protection: Three-dimensional positioning can realize height positioning for monitoring and maintenance personnel when they are working at heights, and combined with the location information and monitoring of substations to ensure the safe positioning of maintenance in the air.
4. Traceability and judgment of historical events: According to the inspection and positioning data, the completion of the work of the staff can be assessed, and it can also provide a basis for responsibility analysis for emergencies.
5. Linkage of whole-process positioning and video surveillance: Drive the high-definition camera pan/tilt according to the position data and orientation of key (inspection or maintenance) personnel, and conduct whole-process video tracking of monitoring objects and record key events to improve video surveillance efficiency.
System advantages:
1. High cost performance: under the same performance requirements (positioning accuracy of 50 cm), the cost of this solution is one third of that of UWB positioning, and its cost is close to that of Zigbee or WiFi positioning; under the same cost premise, Zigbee or WIFI, etc. The positioning technology cannot meet the high-precision positioning requirements of substations at all.
2. Wide coverage: A basic positioning unit of the radar positioning technology used in this solution can cover 50 meters * 50 meters, and the positioning reference point adopts an omnidirectional antenna to achieve seamless expansion. The same coverage area uses the fewest reference points for positioning.
3. High positioning accuracy: This system can achieve high-precision positioning of 0.5 meters, which is basically close to the performance of UWB technology in substations, and is aRFIDWIFI, Zigbee and other technologies can not be achieved.
4. Simple deployment: All positioning reference points of this system only need power supply (solar or coupled power can be used), and no network connection data transmission is required. The reference point base adopts magnetic adsorption technology, which is convenient and easy to fix the position.
Video surveillance linkage
It can track and monitor each monitoring object in real time, quickly know the status of on-site events, improve the utilization rate of video monitoring and the clarity of video event recording, which not only saves time and cost, but also obtains better video monitoring effects. Key video features are:
Locating Key Video Retrieval: Retrieve videos based on location, time, event and person;
Intelligent record management: the video of the inspection part can be stored and managed separately;
Historical inspection positioning track and video overlay: directly call the historical frame picture through positioning;
Security alarm and help
Substations have strict requirements on safety distance and operation specifications. Through the high-precision positioning of this safety assurance system, the functions of pre-alarm and help in dangerous areas can be realized, and the intrinsic safety of substation inspection and maintenance work can be realized.
Pre-alarm before entering the dangerous warning area. Once the alarm is given, the camera will immediately turn to shoot and record;
The alarm button has a help function. Once the help is activated, the camera will immediately turn to shoot and record;
Alarm clear function;
success case
In 2010, Jiangsu Tangen Technology cooperated with China Electric Power Research Institute to successfully implement the safety assurance system for substation inspectors in Fuzhou 500KV substation. After it was put into operation, it reduced the failure rate of substation equipment in Fuzhou substation by 25% and reduced operation and maintenance costs. 65%, the system is the first domestic substation positioning application, which has far-reaching significance.
In recent years, our company has successful cases in Zhangzhou, Gaizhou, Jining and other substations.
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