Overhead Power-lines Design: Transmission & Distribution

Distribution overhead power- lines & Transmission overhead power-lines

Course aims to cover fundamental concepts associated with the physical design of Overhead Power-lines (OHPLs) in a structured way so that it’s easy to digest for the audience coming from different engineering backgrounds.

What you’ll learn

• Common Power-line definitions.
• Different structural design approaches to power-lines – Deterministic Design, Ultimate Design & Reliability based Design.
• Mechanical Loading Criteria- Weather loads, Failure Containment loading, Construction & Maintenance loads.
• Conductors and Overhead Ground wires- Different types and selection considerations.
• Wire tension limits and Sag-Tension calculations.
• Conductor Behaviour.
• Aeolian vibrations and Galloping.
• Power-line structures – Different configurations & Material types.
• Insulators- Function, material type, typical arrangements and selection criteria.
• Power-line hardware.
• Different types of Electrical Stresses- Lightning strikes, switching over voltages, power frequency.
• Electrical clearances.
• Impact of wind on electrical clearances – Insulator swing angle calculation.
• Radio interference and Induction.
• Power-line routing/layout – Considerations and procedure.
• Power-line Right of Way – Right of way width calculation, tree falling considerations, construction & maintenance considerations.
• Typical engineering deliverables.

Course Content

• Introduction –> 1 lecture • 2min.
• Table of Content –> 1 lecture • 5min.
• Definitions –> 1 lecture • 5min.
• Power-line Design Approches –> 6 lectures • 11min.
• Loading Criteria –> 5 lectures • 11min.
• Conductors and Overhead Ground Wires (OHGW) –> 8 lectures • 30min.
• Powerline Structures –> 2 lectures • 14min.
• Insulators and Hardware –> 6 lectures • 14min.
• Electrical Considerations –> 4 lectures • 14min.
• Overhead Line Design –> 11 lectures • 36min.

Requirements

Course aims to cover fundamental concepts associated with the physical design of Overhead Power-lines (OHPLs) in a structured way so that it’s easy to digest for the audience coming from different engineering backgrounds.

Course is divided in 8 major sections with each section discussing one of the main aspect of the Overhead Power-lines. Brief overview of what to expect in this course:

• Common power-line definitions.
• Different structural design approaches to OHPLs – Deterministic design approach, Ultimate load design and Reliability based design methods.
• Mechanical loading criteria- Weather related loads, failure containment loading , construction and maintenance loadings, structure strength and overload factors.
• Conductors & Overhead Ground wires – Common conductor types, conductor selection considerations, OHGW selection considerations, design tension limits, sag tension calculations, conductor behaviour such as creep, temperature and tension effects on the conductor, and typical conductor motions like Aeolian vibration and galloping.
• Power-line structures: Structure classifications & different material types i-e wood, steel (monopoles & lattice)
• Insulators & Hardware: Insulator function, material type, typical arrangements and the design criteria. We will also discuss power-line hardware.
• Electrical Considerations: Different type of electrical stresses, electrical clearances, insulator swing calculation, radio interference and induction.
• Power-line design: Line layout and routing considerations and procedure, Right of ways and right of way width calculation, conductor & structure selection considerations, line loading criteria and typical power-line engineering deliverables.