High Voltage Electrical Maintenance: Insulator Coatings For Lined And Station Insulators

Workshop Overview

The first day of this two-day workshop will review the insulator pollution problem in stations and on overhead lines. The meaning of insulator pollution in the desert and along coasts will be discussed. The methods of monitoring pollution and the meaning of equivalent salt deposit density as it pertains to pollution performance will also be covered. The mechanism of flashover beginning with the deposit of pollution, wetting, dry band arcing and flashover will be discussed.

This will be followed by a presentation of the present-day methods of preventing insulator flashovers, by high pressure water washing, dry cleaning, modifying insulator design and the types of insulators in use for desert and coastal applications. Insulator replacement strategies such as replacing conventional insulators with silicone rubber designs, and replacing bushings and surge arresters with silicone rubber housed designs. Finally, insulator coatings will be introduced.

The second day will begin by discussing “how silicone rubber coatings work”. The aspects of coating formulation and the importance of fillers will be discussed. This will be followed by case studies, in the Gulf Region, and world wide cases. In the afternoon performance and purchase specifications will be addressed. Field preparation of insulators for stations and lines will be presented. Quality audit after application dealing with coating thickness and adhesion will be discussed. The end of the session will discuss what is known about coating life.

Key benefits of attending this workshop

By the end of this course, delegates will be able to:

  • UNDERSTAND pollution flashovers of insulators in desert installations
  • IDENTIFY the conditions leading to flashover
  • KNOWLEDGEABLE in high voltage insulator performance and selection
  • IMPLEMENT necessary measures to ensure zero outages
  • DEVELOP high voltage coating purchase specifications
  • SPECIFY station insulator preparation specifications and quality audits
  • MONITOR conditions for signs of aging
  • ACHIEVE maximum reliability of overhead insulators

Who Should Attend?

This workshop is specially designed for:

  • Electrical engineers
  • Electrical maintenance personnel
  • Electrical contractors
  • Power specialists
  • Maintenance managers
  • Consultants
  • Technologists

Why You Should Attend?

To become familiar with the pollution flashover of insulators, the conventional methods of mitigating flashovers, and to understand polymer insulator technology along with the limitations of the technology. To understand the mechanism of high voltage insulator coatings, know how they perform, and their lifetime characteristics. Become knowledgeable with current coatings, preparation of performance specifications, field application guidelines, and quality audits. Become Aware of case studies in the Gulf Region and learn about the world-wide experience.