Transformers Handbook 2014

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Transformers + Substations Handbook: 2014

Foreword by Ian Jandrell

1

Chapter 1

Design and manufacture of transformers

Fundamentals of transformer design 6 By H du Preez, Consultant Power transformers - design and manufacture 12 By S Mtetwa, Eskom Proper transformer sizing and copper windings 16 By E Swanepoel, Copper Development Association Africa (CDAA) Design and material selection of wind turbine generator transformers 20 By C Carelsen, M Hlatshwayo, J Haarhoff and G Stanford, Powertech Transformers Buchholz relays in South Africa 24 By P De Matos, Allbro

Chapter 2

Design and installation of a substation

Mobile substations – the sensible alternative 26 By W Jackson, Efficient Power Very Fast Transient Overvoltages on power transformers 30 By G Semiano, WEG Equipamentos Eletricos SA Innovative transformer protection relays 38 By R Billiet, NTSA Lightning protection – where it matters most 40 By A Barwise, DEHN Protection South Africa Transformer winding temperature determination 46 By JN Bérubé and J Aubin, Neoptix and W McDermid,

Manitoba Hydro

Chapter 3

Substation automation

Ethernet in utilities for critical communications networks 50 By T Craven, H3iSquared Higher utilisation of power systems 54 By M Sanne, Siemens South Africa Automatic voltage control of networks with embedded generation 58 By V Thornley, Siemens and N Hiscock, Fundamentals Limited

Chapter 4

Maintenance

Transformer condition monitoring: making the electrical connection 62 By S Kuwar-Kanaye, Impact Energy Transformer oil analysis – basic introduction 68 By N Robinson, WearCheck Continuous humidity measurement in gas-insulated switchgear 72 By T Jung, WIKA Arc-rated gloves and the new ASTM test method 74 By H Hoagland and Z Jooma, e-Hazard Transformer oil management overview 77 By J De Bruto, Saftronics

Authors

80

Abbreviations

84

Advertisers

84

Published by:

Crown Publications

Publisher:

Jenny Warwick

Managing editor:

Karen Grant

Editorial technical

director:

Ian R Jandrell

Editor:

Wendy Izgorsek

Cover design:

Lesley Testa

Design:

Adél JvR Bothma

Layout:

Zoran Damjanovic

Advertising managers:

Helen Couvaras and

Heidi Jandrell

Circulation:

Karen Smith

Contents

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