ROCK R3 Pro – High-Density Transmission Corridor Survey for PLS-CADD
Aug 09, 2024
This project demonstrates an engineering-grade workflow for surveying electric transmission corridors using the ROCK R3 Pro. Flying low and slow, we captured a 111-acre corridor with an exceptionally high point density, creating a dataset tailor-made for the rigorous demands of PLS-CADD software. The results showcase the precision and data richness required for detailed utility design, analysis, and maintenance.
Mission Overview
- Platform: Aerial survey with ROCK R3 Pro
- Flight Altitude: ~40 m (131 ft) Above Ground Level (AGL)
- Flight Speed: ~5 m/s (11 mph)
- Area Scanned: 111 acres
- Deliverables: High-density LiDAR point cloud and Accuracy Report, optimized for PLS-CADD integration.
This flight strategy was deliberately chosen to maximize point density on the conductors and structures, which is critical for accurate modeling in utility engineering software.
Coverage & Context
The dataset covers a 111-acre transmission corridor. For utility applications, accurately modeling the catenary curve of the power lines and the precise location of structural components is essential. This requires an extremely high point density, which was achieved here at 1,098 points per square meter. This level of detail ensures that engineers have the data they need for reliable sag analysis, clearance studies, and upgrade designs.
Dataset Metadata
- Total Acreage: 111 Acres
- Coordinate System (Horizontal): WGS 84 / UTM zone 10N (EPSG: 32610)
- Vertical Reference: Ellipsoid
This standard projection ensures that the data can be seamlessly imported and used in PLS-CADD and other global engineering software packages.
Performance Highlights
- Extreme Point Density: With 1,098 points per square meter, this dataset provides an incredibly detailed model of all wires, insulators, and tower components.
- Engineering-Grade Accuracy: The project achieved a Vertical Accuracy RMS of 0.043 m (4.3 cm), meeting the stringent requirements for transmission line engineering and analysis.
- Optimized for PLS-CADD: The combination of high density and high accuracy makes this dataset ideal for creating detailed models to analyze ground clearances, wire sag under different load conditions, and vegetation encroachments.
Applications
This dataset is a valuable resource for:
- Transmission Line Engineering & Design
- PLS-CADD & PLS-Pole Modeling
- Line Re-rating and Capacity Studies
- Vegetation Management and Danger Tree Analysis
- As-Built Surveys for Utility Infrastructure
- Clearance and Encroachment Audits
Key Takeaways
- The ROCK R3 Pro can be configured for specialized missions requiring extreme point density by adjusting flight parameters.
- Achieving engineering-grade accuracy (sub-5 cm) is critical for projects that inform high-stakes infrastructure decisions.
- This dataset is a prime example of a LiDAR collection perfectly executed for the demands of the electric utility industry.