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Analysis of Substation Personnel Positioning System
With the commissioning of ultra-high voltage transmission and transformation systems in China
Product details
With the implementation of China's ultra-high voltage transmission and transformation system, the efficiency of power transmission and transformation has significantly improved. However, the expansion of cities has led to a significant increase in the number of substations, which are key links in power transmission. The substation substation substation area is a typical high-risk work area and is of utmost importance in the field of power transmission. A slight negligence can easily lead to major accidents, which has always been valued in the production field. With the emergence of emerging UWB positioning technology, the positioning accuracy of substations has also shifted from meter level to centimeter level, and functions such as electronic fences that were not originally available have been widely used in the management platform of substations.
The cornerstone of personnel safety is the implementation of obtaining personnel location information. Therefore, it is necessary to introduce a location-based management information system to effectively supervise and control operations within the area, issue warnings for entering hazardous areas, and achieve the goal of ensuring safe production without accidents. With the development of robot technology in recent years, some personnel's inspection work has been replaced by automatic robots, greatly reducing the number of manual inspections. However, robots cannot completely replace human work. The introduction of high-precision substation positioning systems has typical effects on both personnel and robot inspections.
1、 Requirement analysis
1. Safety operation requirements in production areas
Traditional safety operations mainly rely on video surveillance. In an era where wireless positioning technology was still relatively crude and positioning accuracy was at the meter level, video and positioning linkage was unimaginable. The simulation video viewing of pure management personnel is the mainstream safety operation monitoring method, and the alarm for distance mainly relies on human experience, with low quantification and high safety hazards.
2. Daily inspection requirements
The transmission lines and equipment of the substation need to be inspected regularly every day, including temperature, arc, etc., which can be precursors to major accidents. Problems need to be discovered and solved during uninterrupted inspections. In places where conditions permit, inspections can be conducted 24 hours a day to minimize the possibility of accidents. The original inspection by relying on personnel had inaccurate location information and careless time control, so there is great room for improvement
3. Data storage and analysis
In the era of missing spatiotemporal coordinates, historical trend analysis cannot be achieved solely through video data. It can only be viewed and traced at a single point in time, making it impossible to continuously track and analyze some hidden dangers and issue early warnings.
2、 Revolutionary UWB positioning technology
After the introduction of UWB positioning technology, with the significant improvement of positioning accuracy and real-time positioning, there has been a great improvement compared to the original technology. Therefore, the new management methods and quantitative methods brought about are revolutionary.
1. Quantified the spatiotemporal coordinates. The introduction of UWB positioning technology enables the time and spatial coordinates of personnel, inspection vehicles, and other equipment to be determined, and the granularity can reach within 1 second or finer. At this point, videos have become an auxiliary tool for positioning, and the routes, times, and contents of personnel and inspection vehicles can be pre planned in time and space coordinates, with data and results saved.
2. The improved warning function and high precision of UWB positioning make the granularity of dangerous area division very detailed, reaching centimeter level. The warning function for personnel will become more efficient, strengthening the security guarantee.
3. The system composition of three-dimensional space, previous management platforms were based on planar architecture, because they lacked the ability to depict on three-dimensional coordinates. If some management platforms adopt 3D modeling production layout, it is mainly to attract attention rather than real demand. After the introduction of UWB positioning technology, space can be calibrated on a three-dimensional sphere, making it possible for a true three-dimensional digital substation. Therefore, in the UWB era, the layout of three-dimensional digital substations is standard rather than optional
3、 Product Function Introduction
Tengdong Information's UWB positioning products have comprehensive solutions and application cases for substations, and have taken into account compatibility with new technologies such as inspection robots. The main functions include:
1. 3D digital substation modeling involves fully 3D digital modeling of all equipment and lines in the substation, with each device having coordinates on the X, Y, and Z axes.
2. Real time display of the positions of personnel and objects, including all tagged personnel or objects, with support for spherical space display
3. Data recording and backtracking, real-time recording of all positioning data, and the ability to backtrack according to requirements
4. Electronic fence alarm, which can dynamically generate electronic fences on the map of digital substations and provide fence alarms
5. Important item supervision, which can monitor important items 24/7
6. Big data analysis and modeling, analyzing, modeling, and predicting historical data
7. Video linkage and tracking, locating special people or objects and guiding cameras for video tracking
8. Interface with other platforms
Summary: The substation personnel positioning system isUWB positioningThe typical application of technology in the power industry is of great significance to the safety production of the power industry.
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