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51 - LONG - Long-Term Programs

LONG 165 - Transmission Lines Design and Installation (15 Days)

Please contact us for fees


Course Description

Transmission lines and sub-stations play an important role in the electrical power systems and exercise a vital influence on the reliability of services. Transmission lines are in continuous operation, therefore it is important to have a good design with perfect construction. It should facilitate easy maintenance without or with minimum interruptions. They require high flexibility to cope up with already existing control systems, available space and limited downtime.  In this course, participants will learn the constructional features, maintenance and routine testing of the transmission lines.
The second part of this course provides an in-depth overview of all the relevant aspects of overhead lines design, construction and also development and planning. The basic purpose of such a comprehensive course is to give all attendees the opportunity to firstly to gain a clear understanding of overhead line construction and  learn the practical aspects of design technology, using the most effective design tools.
The course also teach participants how to use the PLS-CADD computer program. This computer lab course includes background theory and hands-on computer modeling. Lectures will present the basic concepts, and computer exercises will illustrate them. Numerous case studies will provide a range of real-life examples.

Course Objectives

  • Understanding the basic theories of electrical transmission lines
  • Being familiar with the codes and standards of sub-stations and transmission lines
  • Understanding the overhead Line Construction
  • Understanding power system planning
  • Apply and gain a good working knowledge on 66&11 kV OHTL design using PLSCADD.
  • Recognize terrain modeling covering the various aspects including organizing. project files, viewing commands, opening of windows and viewing of phases and sags.
  • Prepare a terrain model, generate and edit features codes data and import XYZ terrain models.

Who Should Attend?

  • Plant engineers
  • Electrical maintenance
  • Service technicians
  • Contractors
  • Energy auditors
  • Anyone who is invloved in planning, installing, and configuring electrical transmission lines

Course Details/Schedule

Day 1

  • Overview
  • Environmental effects
  • Electric field effects
  • Corona and magnetic field
  • Audible noise
  • Insulation of cables
  • Insulation design
  • Insulator types
  • Cable materials
  • Line types and characteristics
  • Insulator types and characteristics
  • Connectors and vibration dampers

Day 2

  • Sag-tension calculations
  • Calculation of  span 
  • Conductor sagging
  • Conductor termination and clipping
  • Wind-induced motions
  • Tower grounding
  • Underground transmission and distribution
  • Various types of towers and functions
  • Force analysis on transmission line structures and tower foundations
  • Line protection relays

Day 3

  • Failure modes of transmission lines
  • Repair and maintenance of transmission lines
  • Safe working procedures and safety rules
  • Site grading design
  • Substation grade types
  • Drainage and erosion protection
  • Foundations
  • Slab on grade
  • Design techniques
  • Bus configurations
  • Types of common configurations

Day 4

  • Insulation and Insulation protection
  • Clearances
  • Surge arresters
  • Bus conductor
  • Electrical power bus
  • Rigid and hollow bus
  • Grounding and Need for grounding
  • Personal safety

Day 5

  • Hazardous potentials during faults
  • Ground grid
  • Earth resistivity
  • Soil and electrode
  • Principle equipment
  • Transformers
  • Circuit breakers
  • Switches
  • Ancillary equipment
  • Substation auxiliary systems

Day 6

  • Power System Planning
  • Power Transfer Capability
  • Environmental Impact 
  • Land Survey

Day 7

  • Electrical Design
  • Earthing 
  • Insulation Co-ordination
  • Electromagnetic Fields

Day 8

  • Insulation Design
  • Ground Wire
  • Lightning Protection
  • Line Components – Tower Design
  • Line Components – Foundation Design

Day 9

  • Mechanical Design and Hardware
  • Mechanical Oscillation
  • Conductor Optimisation
  • Communication over Power Lines
  • Line Construction

Day 10

  • Insulation Selection
  • Line Design Tools 
  • Structural Design 
  • Electrical Towers Construction
  • Electrical Tower Test 

Day 11

  • Integrated and computerized aspects of line design
  • PLS-CADD system
  • PLS transmission structure programs
  • The specific functions of PLS-CADD

Day 12

  • List the three dimensional engineering model
  • Terrain modeling covering the various aspects
  • The necessary data needed for terrain modeling
  • Perform proper surveying techniques

Day 13

  • Prepare a terrain model
  • Generate and edit features codes data
  • Import XYZ terrain models
  • Create alignments side profiles

Day 14

  • Multiple alignment options
  • TIN terrain models and break lines
  • Differentiate XYZ and user-defined data
  • Filter XYZ data

Day 15

  • Attach DXF and bitmaps to plan
  • Generate, edit or import PFL terrain models 
  • Illustrate line routing and design 
  • Conductor design and modeling