Project Background

Substation is the core link of power transmission and an important industry for national economic development, which requires more and more refined management for operation and maintenance. In this context, Southern Power Grid, as a pathfinder in the development of energy digitalisation, actively responds to the national policy and accelerates the construction of "Digital Southern Power Grid".

Under the traditional management model, a 500kV substation in Southern Power Grid's Guangdong province is plagued by misplaced maintenance personnel, inadequate supervision of high-altitude operations and misuse of earthing wires. The traditional management model lacks effective technical support and also consumes a lot of manpower.

Demand analysis

How to break this traditional management fetters? Southern Power Grid has introduced UWB IoT technology provided by Woxu to enhance efficient, transparent and intelligent safety management in substations.

The UWB high-precision personnel location solution created by Woxu for Southern Power Grid covers areas such as the main control and communication building, main substation room, relay room and outdoor high level. Based on the original two-dimensional positioning, it is the first time that the three-dimensional management of personnel working at heights and the determination of grounding wire hook-up and removal are realized on the substation scene. 

Combined with visual 3D, electronic fence, video linkage, etc., it makes the probability of human misoperation, missed operation and going to the wrong area become 0. It significantly reduces the pressure of site management to enhance safety operation and maintenance, and further promotes the digital construction of power grids.

1. Real-time location data for more transparent operation and maintenance

Through the location data, you can view the distribution of maintenance personnel, inspection personnel and climbing personnel in real time, and grasp the personnel dynamics in the field at any time, and present a panoramic view of the site in 2D and 3D, making management simpler and more transparent

2. Personnel inspection control, making the results traceable

As one of the daily operation and maintenance management tools of substations, how to accurately and effectively supervise the work of inspection personnel is a long-term pain point, UWB high-precision personnel positioning solution through the planning of inspection points in the inspection area, set the inspection personnel and cycle, and the real-time location of personnel inspection and inspection tasks through the platform to show and share out, managers can view the completion of each inspection task in real time, all-round Meet the power industry's regular inspection needs and the results can be tracked.

3. Abnormal emergency alerts, making safety manageable

Combining the UWB positioning system with the substation video monitoring system, the virtual electronic fence can be set to send alerts to people entering key areas and dangerous areas, and can automatically switch the video screen on site according to the location of the personnel involved, which can enhance safety guarding in all aspects.

In addition, work at height is particularly common in substations, but also poses a greater security risk. In the event of a slip and fall emergency, the control centre can receive a real-time fall alert and the operator can press the sos alert button to call for help, enhancing the speed of rescue response. At the same time, it also monitors and manages the situation that walking or illegal stay is prohibited under the operation area to prevent dangerous accidents.

4、Grounding wire hook-up judgement for trouble-free maintenance operations

Using the UWB positioning device for real-time positioning of the earthing wire, and through the network will be grounding wire code information and location information transmitted to the server, according to the location of the grounding wire information to determine the grounding wire is "hooked up" or "removed" and other states, after the completion of maintenance to close the gate If there is an unremoved earth wire, an alarm will be issued immediately.

Value Summary

The introduction of UWB technology is another breakthrough in the digitalisation of the Southern Power Grid, greatly enhancing the overall visualization, decision support and safety prevention capabilities of the substation.