Painpoints
Manual inspections are labor-intensive and involve navigating complex structures, with evaluations largely based on the subjective assessments of inspectors.
High-voltage equipment necessitates strict adherence to safety clearances, which restricts the accessibility of inspection personnel to certain zones and apparatuses.
The inspection of vital components such as transformers, circuit breakers, and busbars is often hindered by limited visibility, complicating the task of achieving a comprehensive inspection and posing difficulties in the efficient management of inspection data.
Advantages
Automated inspection protocols reduce the necessity for hands-on involvement and decrease the duration spent on-site, thereby enhancing efficiency and quality.
Drones are capable of approaching electrical equipment closely or utilizing high-resolution zoom lenses to obtain sharp, intricate visuals.
Aerial inspections offer novel vantage points for inspecting critical components and facilitate the assessment of equipment condition through advanced thermal imaging analysis.
Drone Platform
DJI Matrice 4T
Weight: 1219 g (with propellers)
Max Flight Time (without wind): 49 minutes
Environment Adaptability: Max takeoff altitude 6000 m, max wind speed resistance 12 m/s
Sensing System: Omnidirectional binocular vision system, supplemented with a 3D infrared sensor at the bottom of the aircraft
Wide-Angle Camera: 1/1.3-inch CMOS, 48MP effective pixels (Matrice 4T)
Medium Tele Camera: 1/1.3-inch CMOS, 48MP effective pixels
Telephoto Camera: 1/1.5-inch CMOS, 48MP effective pixels
Infrared Thermal Camera: 1280 × 1024@30fps (Super Resolution enabled, Night Mode not activated)
Laser Rangefinding: 1800 m measurement range (1 Hz) @ 20% reflectivity target
Payload and Software
DJI Pilot 2
Ground control.
DJI FlightHub 2
Drone and dock’s cloud management system.
DJI Terra
Modeling and flight mission plan
Workflow
1 Mission Planning:
– Use software like DJI Terra or DJI FlightHub 2 to plan inspection flight routes based on high-definition 3D models of the substation.
2 Data Collection:
– Upload the flight path to the Matrice 4E / 4T drone. The drone automatically executes the pre-planned flight route, capturing visible light and infrared inspection photos.
3 Data Analysis:
– Import the images to DJI Thermal Analysis Tool to analyze the inspection results manually or import them into third-party software to identify equipment defects using model detection.
Drone Platform
DJI Matrice 4T
Weight: 1219 g (with propellers)
Max Flight Time (without wind): 49 minutes
Environment Adaptability: Max takeoff altitude 6000 m, max wind speed resistance 12 m/s
Sensing System: Omnidirectional binocular vision system, supplemented with a 3D infrared sensor at the bottom of the aircraft
Wide-Angle Camera: 1/1.3-inch CMOS, 48MP effective pixels (Matrice 4T)
Medium Tele Camera: 1/1.3-inch CMOS, 48MP effective pixels
Telephoto Camera: 1/1.5-inch CMOS, 48MP effective pixels
Infrared Thermal Camera: 1280 × 1024@30fps (Super Resolution enabled, Night Mode not activated)
Laser Rangefinding: 1800 m measurement range (1 Hz) @ 20% reflectivity target
DJI Matrice 4E
Weight: 1219 g (with propellers)
Max Flight Time (without wind): 49 minutes
Environment Adaptability: Max takeoff altitude 6000 m, max wind speed resistance 12 m/s
Sensing System: Omnidirectional binocular vision system, supplemented with a 3D infrared sensor at the bottom of the aircraft
Mechanical Shutter Speed: 2–1/2000 s, minimum photo interval 0.5 s
Wide-Angle Camera: 4/3-inch CMOS, 20MP effective pixels
Medium Tele Camera: 1/1.3-inch CMOS, 48MP effective pixels
Telephoto Camera: 1/1.5-inch CMOS, 48MP effective pixels
Laser Rangefinding: 1800 m measurement range (1 Hz) @20% reflectivity target
Payload and Software
DJI Terra
Modeling and flight mission plan
DJI FlightHub 2
Drone and dock’s cloud management system.
DJI Pilot 2
Ground control.
DJI Thermal Analysis Tool 3
By identifying the temperature information of critical areas of the target, the software can be used to analyze objects across many industrial applications.
Workflow
1 Mission Planning:
– Use DJI FlightHub 2 to plan inspection routes based on high-definition 3D models of the substation.
– Or import previously saved inspection flight routes to the DJI FlightHub 2 via the Pilot 2 app using the Live Mission Recording feature.
2 Data Collection:
– Using DJI FlightHub 2, select the preferred dock and scheduled inspection mission.
– The Matrice 4TD will execute the inspection tasks according to the plan, and upload the captured data to DJI FlightHub 2.
3 Data Analysis:
– Analyze the images to detect defects or required maintenance work. Transfer the data to a third-party software to identify equipment defects using model detection.
Drone Platform
Matrice 350 RTK
Weight: Approx. 6.47 kg (with single downward gimbal and two TB65 batteries)
Max Flight Time: 55 minutes
Sensing System: Six-directional sensing and positioning
Environment Adaptability: IP55; max service ceiling above sea level 7,000 m (with 1676 propellers, without other payload); max wind resistance 12 m/s
Payload and Software
Zenmuse H30T
Wide-Angle RGB Camera: 1/1.3-inch CMOS, 48MP effective pixels
Zoom RGB Camera: 1/1.8-inch CMOS, 40MP effective pixels, 34× hybrid optical zoom
Infrared Thermal Camera: 1280×1024@30fps
NIR Auxiliary Light Illumination Range: Approx. 8m diameter circle @ 100 m
Laser Range Finder: Max measurement range 3000 m
Zenmuse L2
Integrates frame LiDAR, a self-developed high-accuracy IMU system, and a 4/3 CMOS RGB mapping camera.
Coverage: 2.5 km² per flight
Detection Range: 250 m @ 10 % reflectivity, 100 klx
Effective Point Cloud Rate: 240 000 pts/s
Returns: Supports 5 Returns
Solution: Turnkey Solution
Workflow
1 Substation Digital Twin:
– Use the DJI Pilot 2 app and Matrice 350 RTK equipped with the Zenmuse L2 to generate a 3D model using the mapping mission functions.
– Import the data into DJI Terra to generate the LiDAR point cloud of the substation. Use the model to plan expansion and maintenance work.
2 Thermal Inspection Mission:
– Using the Matrice 350 RTK equipped with the Zenmuse H30T payload, manually fly to capture thermal readings of the key components of the substation. Use the Live Mission Recording feature to easily repeat the same missions in the future.
3 Data Analysis:
– Analyze the inspection photos manually or use model detection to identify defects in the transmission corridor.
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