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2019 | Book

Unused Mineral Insulating Oil Read chapter Read first chapter

Quality Confirmation Tests for Power Transformer Insulation Systems

Authors: Prof. Behrooz Vahidi, Ashkan Teymouri

Publisher: Springer International Publishing

Part of: Springer Professional "Wirtschaft+Technik" , Springer Professional "Technik"

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About this book

This book focuses on oil-paper insulation included in power transformers, especially for EHV and UHV transformers. The importance on insulation ever increased due to a growing voltage rating of transformers. Within the last decades, although research on the transformer insulation and diagnosis methods has advanced a lot, the insulation of HV transformers remained more or less unchanged. The book is divided into five chapters; the first and second chapters explain the basics of oil insulation, while the third chapter focuses on paper insulation. The final two chapters deal with the methods and outcome of testing both techniques. The primary target audience for this book is graduate students and power system engineers.

Table of Contents

Frontmatter
Chapter 1. Unused Mineral Insulating Oil
Abstract
The purpose of this chapter is to determine the characteristics and test methods of unused mineral oil containing additives or without additives used in transformers in which oil has been used as the insulator.
Behrooz Vahidi, Ashkan Teymouri
Chapter 2. In-Service Mineral Insulating Oil
Abstract
Mineral insulating oil is used in electrical equipment of power plants, transmission system and distribution systems. The quality of oil monitoring and maintaining are vital for oil-filled electrical equipment reliable operation. Therefore, operational solutions have been developed by the power generation and transmission companies.
Behrooz Vahidi, Ashkan Teymouri
Chapter 3. Chemical Indicators
Abstract
The useful life of the transformers is based on the life of its insulation system, the combination of cellulose and oil. In practice, some transformers even more than 50 years in power networks are constantly being used.
Behrooz Vahidi, Ashkan Teymouri
Chapter 4. Dissolved Gas Analysis (DGA)
Abstract
The collection and analysis of gases in an oil-insulated transformer were discussed as early as 1928 [1]. One of the signs of fault diagnosis in a transformer is the rapid growth of gases during a failure of an oil-filled transformer. It should be noted that these gases are dissolved in the oil. As a result, some faults could be identified by analyzing the oil-soluble gases.
Behrooz Vahidi, Ashkan Teymouri
Chapter 5. Other Tests
Abstract
As you know, electrical insulation forms a large part of a transformer and its main task is to withstand the voltages. Therefore, the insulation system should be regularly inspected to increase the reliability and also avoid financial losses.
Behrooz Vahidi, Ashkan Teymouri
Backmatter
Metadata
Title
Quality Confirmation Tests for Power Transformer Insulation Systems
Authors
Prof. Behrooz Vahidi
Ashkan Teymouri
Copyright Year
2019
Electronic ISBN
978-3-030-19693-6
Print ISBN
978-3-030-19692-9
DOI
https://doi.org/10.1007/978-3-030-19693-6