This one-and-a-half-day course is designed to provide an introduction to transmission line concepts, definitions, and common design practices while infusing the technical tools needed to perform the work with the design concepts (PLS CADD Suite, MFAD, etc.) The first day will cover an introduction to transmission lines, electrical characteristics of lines, routing and structure spotting, conductor, hardware, and material information, and structure loading. The second day will pertain to electrical clearances, code requirements, structure spotting (ruling span vs. finite element), foundation design, and construction methods.
Learning Outcomes
- Review what conductors are used in based on weather conditions, tensions, & electric loadings
- Recognize basic transmission line construction methods
- Discuss the basics of ruling span design and structure spotting techniques
- Review physical transmission line design and the software used to perform analysis
- Examine and identify all parts, pieces, hardware, etc. of a transmission line
- Discuss the basic concepts of transmission structure foundation design
- Identify the applicable codes and standards required to perform transmission line design
Agenda
THURSDAY, JANUARY 27, 2022
9:00 a.m. – 4:00 p.m. Central Time
Overview
- What is a Transmission Line
- Conductors, Shield Wires, Communication Wires & Associated Hardware
- Structures & Foundations
- Electrical Characteristics & Grounding
- Code References
- National Electric Safety Code (NESC)
- Rural Utilities Service (RUS)
- Institute of Electrical and Electronics Engineers (IEEE)
- American Society of Civil Engineers (ASCE)
- Design Considerations
- Design Process
- PLS-CADD Software
Transmission Planning
- System Studies
- Routing Studies
- Right-of-Way Considerations
- Permitting
- Survey Acquisition
Conductor Characteristics
- Electrical Characteristics
- Sag Tension
- Conductor Selection
- Conductor Motion
- Types of Overhead Ground Wires
Structure Configuration & Structure Types
- Structure Types & Configurations
- Structure Materials
- Aesthetic Considerations
- Design Factors
Hardware & Assemblies
- Conductor Hardware
- Insulators
- OPGW Hardware
- Shield Wire Hardware
- Grounding Considerations
FRIDAY, JANUARY 28, 2022
9:00 a.m. – 12:00 p.m. Central Time
Electrical Clearances & Mechanical Loading
- Design Criteria
- Weather & Load Cases
- Clearances
Foundation Design
- Types of Transmission Structure Foundation Design
- Software Used
Construction Methods & Design Considerations
- Modifications to Existing Lines
- Foundation Installation
- Structure Setting & Placement
- Stringing