Overhead Transmission Lines Inspection &Amp; Maintenance Techniques
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COURSE DATES AND LOCATIONS
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INTRODUCTION
Overhead Lines form the majority of Transmission and Distribution Circuits due to their much lower cost than equivalent cables at the same voltage and current ratings. An Overhead Line is a set of 3 wires, onefor each phase, referred to as the conductors. At Transmission Voltage Levels the conductors are normally strung on steel-latticed towers of many different shapes and size.
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COURSE OBJECTIVES
By the end of the course, you‘ll be able to:
- Ensure delegates develop their existing knowledge and are acquainted with latest developments in Overhead Line Technology.
- In addition that the principles can be appropriately applied in every day work to improve their personal effectiveness and efficiency.
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COURSE AUDIENCE
This course is made for
- Electrical Controls Engineer
- Electrical Design Engineer
- Electrical Engineer
- Electrical Project Engineer
- Electronics-research engineer
- Instrumentation and Electrical (I&E) Reliability Engineer
- Power Systems Engineer
- Project Engineer
- Test Engineer
- illuminating engineer
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COURSE OUTLINE
Day One
- Overhead Lines versus Underground Cables
- Support Structures
- Steel Lattice Towers
- Wooden Poles
- Overhead Line Foundations
- Soil Investigation
- Foundation Types
- Foundation Design
- Site Works
- Overhead Line Routing
- Preliminary Routing
Day Two
- Survey Equipment Requirements
- Aerial Survey
- Ground Survey
- Ground Soil Conditions
- Wayleaves, Access and Terrain
- Optimisation
- Detailed Line Survey and Profile
- Computer-aided Techniques
- Structures, Towers & Poles
- Environmental Conditions
- Typical Parameters
- Effect on Tower or Support Design
- Conductor Loads
Day Three
- Substation Gantry Worked
- Structure Design
- Lattice Steel Tower Design Considerations
- Tower Testing
- Pole and Tower Types
- Pole Structure
- Tower Structure
- Conductors
- Environmental Considerations
- Conductor Selection
- Types of Conductor
- Aerial bundled conductor
- Conductor Breaking Strength
- Bi-Metal Connectors
- Lightning
Day Four
- Calculated Ratings
- Power Carrying Capacity
- Corona Discharge Line Rating Calculation
- Worked Example and Exercise
- Design Span
- Clearances and Loadings
- Distribution Voltage Clearances
- Transmission Voltage Level Clearances
- Overhead Line Clearance Calculations
- Worked Example and Exercise
- Overhead Line Fittings
- Aerodynamic Phenomena
- Suspension Clamps
- Sag Adjusters
Day Five
- Other types of Fittings
- Overhead Line Impedance
- Inductive Reactance
- Capacitive Reactance
- Resistance
- Worked Example and Exercise
- Overhead Lone Maintenance
- Case Studies
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