Sector-specific

High-voltage cable maintenance techniques

Energy 50 hours

Introduction

In the fast-paced energy sector, the ‘High-Voltage Cable Maintenance Techniques’ course offers a unique opportunity to acquire essential skills in a field where demand for workers is growing. With the expansion of the electricity infrastructure, the need for trained professionals to carry out maintenance on isolated power lines is more important than ever. This course will enable you to master advanced techniques for diagnosing and analysing faults in cables and accessories, which are vital for ensuring the safety and efficiency of electrical networks. You will learn to identify and resolve problems, improving your ability to tackle technical challenges with confidence. Furthermore, the course’s online format offers you the flexibility to learn at your own pace, incorporating key theoretical knowledge that will enhance your professional profile. Become an expert in high-voltage maintenance and stand out in a sector that is constantly growing, thereby securing your future in the job market.

Objectives

- Identify maintenance requirements on isolated lines.

- Apply diagnostic techniques to identify problems.

- Analyse common faults in high-voltage cables.

- Locate faults in cables using the appropriate tools.

- To assess faults in high-voltage cable fittings.

- Understand maintenance schedules to prevent faults.

- Implement efficient maintenance solutions.

Table of Contents

TEACHING UNIT 1. THE NEED FOR MAINTENANCE ON ISOLATED LINES
Ageing networks: phase out, extend or replace?
Development and implementation of a diagnostic programme for electricity networks
Life-cycle cost estimation
Bibliography

TEACHING UNIT 2. DIAGNOSTIC TECHNIQUES
Introduction
Main types of cable systems used in the high-voltage network.
Diagnostic techniques
Summary tables of diagnostic techniques applied to AC cable systems

TEACHING UNIT 3. FAULT ANALYSIS
Introduction
Cable systems
Ageing, degradation and failure
Why do cables fail?
Errors
Insulated cables
Types of fluid-insulated cables
Ageing of oil-insulated cables
Maintenance of submarine cables
Exceptional operating figures
Errors
Probability of failure
Evidence of faults in cables and fittings
Essays
Conclusion
Bibliography

TEACHING UNIT 4. FAULT LOCATION
Introduction
Insulation conditions. Cables in good condition, in poor condition and faulty
Procedure for locating faults in cables and carrying out subsequent repairs.
Methods for the preliminary location of faults in cables
Cable route mapping
Modern methods of precise localisation (pinpointing)
Identification of the cables
Procedures for identifying offences
Bibliography

TEACHING UNIT 5. DESIGN. FAILURE ANALYSIS
Purpose
Scope
Design considerations
Considerations regarding the production process
Conclusions

TEACHING UNIT 6. MAINTENANCE RANGES
Summary of the module “High-voltage cable maintenance techniques”
Parameters to monitor in network components
Types of maintenance
Maintenance work
Maintenance ranges
List of maintenance ranges
Annex I. Legal aspects within Spanish territory
Annex II. Summary diagrams

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