INDUSTRY
Transmission and Distribution Infrastructure
Efficient condition assessment for transmission lines, distribution systems, structures, hardware and corridors.
Transmission and distribution networks cover large geographic areas and include thousands of individual components exposed to wind, temperature changes, precipitation, contamination, vegetation, wildlife and mechanical loading.
Traditional inspection methods can be time-consuming, particularly when assets are located in difficult terrain or spread across long corridors. RPAS and advanced imaging technologies provide additional ways to examine infrastructure efficiently while reducing unnecessary climbing and improving access to elevated components.
Helios Infrasight provides RPAS, visual and thermal inspection services for transmission and distribution infrastructure across Alberta. Our work helps utilities, asset owners, contractors and industrial operators document asset condition and identify areas requiring closer attention.
Transmission Line Inspections
High-resolution aerial imagery can support routine patrols, targeted investigations and post-event assessments of transmission infrastructure.
Inspection scopes may include:
- Lattice towers, monopoles and wood structures
- Crossarms, braces and structural members
- Insulators and insulator strings
- Conductors, shield wires and visible fittings
- Dampers, spacers and attachment hardware
- Bolts, fasteners and connection points
- Grounding components where visible
- Corrosion, deformation and damaged coatings
- Bird nests, foreign objects and contamination
- Rights-of-way and selected vegetation concerns
RPAS imagery can provide multiple viewing angles and close visual detail without requiring personnel to climb every structure. This allows maintenance teams to review specific components and focus field resources where they are most needed.
Distribution System Inspections
Distribution systems contain a wide range of poles, transformers, switches, cut-outs, arresters, conductors and service components. Because these assets are often located near roads, communities, industrial facilities and agricultural land, inspection planning must account for both technical and public-safety considerations.
Distribution inspection services can support the assessment of:
- Wood, steel and composite poles
- Crossarms and pole-top hardware
- Insulators and conductors
- Pole-mounted transformers
- Cut-outs, switches and arresters
- Connectors, jumpers and terminations
- Visible leaning, damage or deterioration
- Vegetation encroachment
- Wildlife activity and nesting
- Storm or impact damage
Aerial imagery can be paired with ground-based observations to create a more complete condition record.
Thermal Inspection Applications
Thermal imaging can help identify abnormal heating in accessible energized components. Depending on equipment loading and the inspection environment, possible applications include:
- Connectors and terminations
- Switches and cut-outs
- Transformer connections
- Jumpers and line hardware
- Distribution panels and cabinets
- Substation interfaces
- Other critical electrical connection points
Thermal results are influenced by load, distance, weather, emissivity, viewing angle and background conditions. These factors are considered during data collection and reporting.
Corridor and Right-of-Way Observations
The condition of the surrounding corridor can directly affect electrical reliability, safety and access.
RPAS inspections may assist with documenting:
- Vegetation encroachment
- Fallen or damaged trees
- Access-road conditions
- Erosion and drainage concerns
- Construction activity near the line
- Unauthorized encroachments
- Storm-related debris
- Changes in terrain or surrounding land use
These observations can help maintenance and vegetation-management teams prioritize additional field review.
Post-Event and Targeted Inspections
Following severe weather, wildfire, high winds, lightning activity or a known system event, rapid visual assessment can help determine where ground crews should focus.
A targeted inspection may be used to document:
- Damaged structures or hardware
- Broken or displaced components
- Conductor concerns
- Vegetation contact
- Fire exposure
- Access limitations
- Areas requiring emergency or priority response
RPAS deployment remains subject to weather, airspace, site access and operational safety requirements.
Qualified RPAS Inspection Operations
Transmission and distribution inspections are performed by Transport Canada-certified RPAS pilots trained to operate around electrical infrastructure, long linear assets and changing field conditions.
Each operation is planned with consideration for:
- Airspace and regulatory requirements
- Proximity to energized infrastructure
- Terrain and accessibility
- Public roads and nearby properties
- Weather and visibility
- Electromagnetic and physical hazards
- Emergency and contingency procedures
- Coordination with utility and site personnel
Thermal inspections are completed by personnel with appropriate infrared training and are conducted using recognized industry practices. Equipment loading, environmental conditions, viewing angle, distance, emissivity and phase comparison are considered when identifying and documenting abnormal temperature patterns. High-resolution visual inspections also require consistent image capture, appropriate camera angles and clear asset identification. Our pilots collect imagery using planned flight paths and repeatable inspection methods so that findings can be traced to the correct structure, pole, tower or component. By combining qualified personnel, structured flight planning and disciplined data collection, Helios Infrasight provides inspection results that can be incorporated into utility maintenance, vegetation-management and asset-condition programs.
Actionable Inspection Deliverables
Inspection information is organized by asset, structure or component so findings can be reviewed efficiently.
Deliverables can include:
- High-resolution aerial imagery
- Thermal images where applicable
- Structure and component identification
- Georeferenced observations
- Annotated defects
- Condition classifications
- Priority findings
- Summary spreadsheets or inspection tables
- Recommendations for closer review or follow-up
