Transformers and Substations Handbook 2014

Contents

1

Foreword by Ian Jandrell

Chapter 3 Substation automation Ethernet in utilities for critical communications networks

Chapter 1 Design and manufacture of transformers Fundamentals of transformer design 6 By H du Preez, Consultant

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By T Craven, H3iSquared

54

12

Higher utilisation of power systems By M Sanne, Siemens South Africa

Power transformers - design and manufacture

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 By C Carelsen, M Hlatshwayo, J Haarhoff and G Stanford, Powertech Transformers 20

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 By S Kuwar-Kanaye, Impact Energy

24

Buchholz relays in South Africa

62

By P De Matos, Allbro

Chapter 2 Design and installation of a substation Mobile substations – the sensible alternative 26 By W Jackson, Efficient Power

68

Transformer oil analysis – basic introduction

By N Robinson, WearCheck

Continuous humidity measurement in gas-insulated switchgear

72

By T Jung, WIKA

30

Very Fast Transient Overvoltages on power transformers

74

By G Semiano, WEG Equipamentos Eletricos SA

Arc-rated gloves and the new ASTM test method

By H Hoagland and Z Jooma, e-Hazard

38

Innovative transformer protection relays

77

By R Billiet, NTSA

Transformer oil management overview

By J De Bruto, Saftronics

40

Lightning protection – where it matters most By A Barwise, DEHN Protection South Africa Transformer winding temperature determination By JN Bérubé and J Aubin, Neoptix and W McDermid, Manitoba Hydro

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Authors

Abbreviations

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Managing editor: Karen Grant Editorial technical director: Ian R Jandrell

Design: Adél JvR Bothma Layout: Zoran Damjanovic

Advertising managers: Helen Couvaras and Heidi Jandrell

Published by: Crown Publications Publisher: Jenny Warwick

Editor: Wendy Izgorsek Cover design: Lesley Testa

Circulation: Karen Smith

Crown Publications cc. Cnr Theunis and Sovereign Sts, Bedford Gardens. PO Box 140, Bedfordview 2008. Tel: (011) 622-4770; Fax: (011) 615-6108; e-mail: ec@crown.co.za; admin@crown.co.za; Website: www.crown.co.za; Printed by: Tandym Print

Transformers + Substations Handbook: 2014

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