Power and Distribution Transformers
Practical Design Guide
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This book is based on the author's 50+ years experience in the power and distribution transformer industry. The first few chapters of the book provide a step-by-step procedures of transformer design. Engineers without prior knowledge or exposure to design can follow the procedures and calculation methods to acquire reasonable proficiency necessary to designing a transformer.
Although the transformer is a mature product, engineers working in the industry need to understand its fundamentals oand design to enable them to offer products to meet the challenging demands of the power system and the customer. This book can function as a useful guide for practicing engineers to undertake new designs, cost optimization, design automation etc., without the need for external help or consultancy.
The book extensively covers the design processes with necessary data and calculations from a wide variety of transformers, including dry-type cast resin transformers, amorphous core transformers, earthing transformers, rectifier transformers, auto transformers, transformers for explosive atmospheres, and solid-state transformers. The other subjects covered include, carbon footprint salculation of transformers, condition monitoring of transformers and design optimization techniques.
In addition to being useful for the transformer industry, this book can serve as a reference for power utility engineers, consultants, research scholars, and teaching faculty at universities.
Table of Contents
Transformer Design. Brief History of Transformer Including Emerging Trends. Design Process. Core Design: Core Area Calculation. Winding Design. Calculation of Load Losses. Calculation of Reactance. Calculation of Core Frame Size, Core Losses, Efficiency and Regulation. Lightning and Switching Surges on Transformer. Inrush Current in Transformer. Calculation of Core and Coil Assembly Dimensions, Tank Size and Tank Weight. Calculation of Winding Gradient, Heat Dissipation and Oil Quantity. Calculation of Pressure Rise, Stress and Strength of Tank. Calculation of Short Circuit Forces and Strength of Transformers. Rectifier Transformers. Cast Resin Transformers. Earthing Transformers. Amorphous Core Transformers. Design of Current-Limiting Reactors. Scott-Connected Transformer. Autotransformers. Transformers for Special Applications or Special Designs. Transformers for Renewable Energy Applications. Condition Monitoring of Oil-Filled Transformers. Carbon Footprint Calculation of Transformer. Seismic Response Calculation for Transformers. Solid-State Transformer. Transformer Design Optimization. Corrosion Protection. Calculation of Miscellaneous Technical Parameters. Design of1000 kVA, 11/0.4 kV, ONAN Transformer. Design of 20 MVA, 33/11.5 kV, ONAN Transformer. Design of 72/90 MVA, 132/34.5 kV, ONAN/ONAF Transformer. Finite Element Methods for Transformer Design. Total Owning Cost (TOC) of Transformer. Comparison of IEC 60076 and ANSI / IEEE C.57.12 Standards. Bibliography.
K. R. M. Nair is an accomplished transformer technology expert with more than 50 years industry experience. For the past 20 years he is the Chief Operating Officer of Federal Transformers Co., UAE.
Power & Distribution Transformers: Practical Design Guide is, as the name indicates, a design guide for practicing transformer designers with step-by-step explanation of various design procedures. Even though, there are many reputed books giving theoretical aspects of transformers, there are only a very few books guiding beginners with the design procedure, formulae, design data and calculations with worked out actual designs. Author has incorporated latest trends in all above areas of design. Author has collected and collated design data from various sources, and presented it in an easy-to -use format, after validating these from his long experience. He has also updated and supplemented many topics based on the developmental work done during his career. Brevity is the essence of this book. Designers will find it worth to keep this reference volume in their shelves for day-to-day work. In today’s industrial world where apprenticeship or learning by sitting next to Nellie is no more prevalent, such transformer books meet a dire need.
- P Ramachandran, Specialist, Power Transformers