Electrical Power System Protection
Electrical Power System Protection provides practising engineers with the most up-to-date and comprehensive one -volume reference and tutorial on power system protection available. Concentrating on fundamental methods and technology and with extensive exa
- PDF / 931,787 Bytes
- 16 Pages / 439.37 x 666.142 pts Page_size
- 69 Downloads / 247 Views
Electrical Power System Protection A. Wright Emeritus Professor of Electrical Engineering, University of Nottingham, Nottingham, UK and
C. Christopoulos Professor of Electrical Engineering, University of Nottingham, Nottingham, UK
I~nl
SPRINGER-SCIENCE+BUSINESS MEDIA, B.V.
First edition 1993 © 1993 A. Wright and C. Christopoulos
Originally published by Chapman & Hall in 1993
Typeset in 10/12 pt Times by Pure Tech Corporation, Pondicherry, India
ISBN 978-1-4613-6341-5 ISBN 978-1-4615-3072-5 (eBook) DOI 10.1007/978-1-4615-3072-5 Apart from any fair dealing for the purposes of research or private study, or critiCÎsm or review, as permitted under the UK Copyright Designs and Patents Act, 1988, this publication may not be reproduced, stored, or transmitted, in any form or by any means, without the prior permis sion in writing of the publishers, or in the case of reprographic reproduction only in accordance with the terms of the licences issued by the Copyright Licensing Agency in the UK, or in accordance with the terms of licences issued by the appropriate Reproduction Rights Organization outside the UK. Enquiries conceming reproduction outside the terms stated here should be sent to the publishers at the London address printed on this page. The publisher makes no representation, express or implied, with regard to the accuracy of the information contained in this book and cannot accept any legal responsibility or liability for any errors or omissions that may be made. A catalogue record for this book is available from the British Library Library of Congress Cataloging-in-Publication data available
Contents
Acknowledgements Preface List of Symbols
1 Fuses 1.1 Historical background 1.2 Basic requirements 1.3 Fuse types and constructions 1.3.1 Cartridge fuses 1.3.2 Semi-enclosed fuses 1.3.3 Expulsion fuses 1.3.4 Liquid fuses 1.4 The behaviour of cartridge fuselinks 1.4.1 The pre-arcing period 1.4.2 The arcing period 1.4.3 Determination of fuselink performance 1.5 The construction of cartridge fuses 1.5.1 Fuse elements 1.5.2 Fuselink bodies 1.5.3 Filling material 1.5.4 Mountings and ratings 1.6 Semi -enclosed fuses 1.7 Expulsion fuses 1.8 Liquid fuses 1.9 The application of fuses 1.9.1 Time/current relationships 1.9.2 I 2 l 1.9.3 V irtual time 1.9.4 Published time/current characteristics 1.9.5 Cut-off characteristics 1.9.6 Operating frequency
xiv xv xvii
1 1 5 6 7 8 8 8 9 9 10 13 14 14 16 16 16 18 18 21 21 22 23 24 24 25 25
vi Contents 1.9.7 Discrimination and co-ordination 1.9.8 The protection of power-system equipment 1.10 The future References Further reading
2 Current transformers 2.1 Historical background 2.2 Conventional current transformers 2.2.1 Equivalent circuits 2.2.2 Behaviour under normal steady-state conditions 2.2.3 Behaviour under abnormal conditions 2.2.4 The effects of core saturation on transformation behaviour Remanent core flux 2.2.5 2.2.6 Operation with a secondary circuit open or of a high impedance 2.2.7 The construction of current transformers 2.3 Linear couplers 2.3.1 The output o
Data Loading...
