This page intentionally left blank (cid:78)(cid:69)(cid:87)(cid:32)(cid:65)(cid:71)(cid:69)(cid:32)(cid:73)(cid:78)(cid:84)(cid:69)(cid:82)(cid:78)(cid:65)(cid:84)(cid:73)(cid:79)(cid:78)(cid:65)(cid:76)(cid:32)(cid:40)(cid:80)(cid:41)(cid:32)(cid:76)(cid:73)(cid:77)(cid:73)(cid:84)(cid:69)(cid:68)(cid:44)(cid:32)(cid:80)(cid:85)(cid:66)(cid:76)(cid:73)(cid:83)(cid:72)(cid:69)(cid:82)(cid:83) (cid:78)(cid:101)(cid:119)(cid:32)(cid:68)(cid:101)(cid:108)(cid:104)(cid:105)(cid:32)(cid:183)(cid:32)(cid:66)(cid:97)(cid:110)(cid:103)(cid:97)(cid:108)(cid:111)(cid:114)(cid:101)(cid:32)(cid:183)(cid:32)(cid:67)(cid:104)(cid:101)(cid:110)(cid:110)(cid:97)(cid:105)(cid:32)(cid:183)(cid:32)(cid:67)(cid:111)(cid:99)(cid:104)(cid:105)(cid:110)(cid:32)(cid:183)(cid:32)(cid:71)(cid:117)(cid:119)(cid:97)(cid:104)(cid:97)(cid:116)(cid:105)(cid:32)(cid:183)(cid:32)(cid:72)(cid:121)(cid:100)(cid:101)(cid:114)(cid:97)(cid:98)(cid:97)(cid:100) (cid:74)(cid:97)(cid:108)(cid:97)(cid:110)(cid:100)(cid:104)(cid:97)(cid:114)(cid:32)(cid:183)(cid:32)(cid:75)(cid:111)(cid:108)(cid:107)(cid:97)(cid:116)(cid:97)(cid:32)(cid:183)(cid:32)(cid:76)(cid:117)(cid:99)(cid:107)(cid:110)(cid:111)(cid:119)(cid:32)(cid:183)(cid:32)(cid:77)(cid:117)(cid:109)(cid:98)(cid:97)(cid:105)(cid:32)(cid:183)(cid:32)(cid:82)(cid:97)(cid:110)(cid:99)(cid:104)(cid:105) (cid:80)(cid:85)(cid:66)(cid:76)(cid:73)(cid:83)(cid:72)(cid:73)(cid:78)(cid:71)(cid:32)(cid:70)(cid:79)(cid:82)(cid:32)(cid:79)(cid:78)(cid:69)(cid:32)(cid:87)(cid:79)(cid:82)(cid:76)(cid:68) (cid:86)(cid:105)(cid:115)(cid:105)(cid:116)(cid:32)(cid:117)(cid:115)(cid:32)(cid:97)(cid:116)(cid:32)(cid:119)(cid:119)(cid:119)(cid:46)(cid:110)(cid:101)(cid:119)(cid:97)(cid:103)(cid:101)(cid:112)(cid:117)(cid:98)(cid:108)(cid:105)(cid:115)(cid:104)(cid:101)(cid:114)(cid:115)(cid:46)(cid:99)(cid:111)(cid:109) Copyright © 2006, 1990, 1986, New Age International (P) Ltd., Publishers Published by New Age International (P) Ltd., Publishers All rights reserved. No part of this ebook may be reproduced in any form, by photostat, microfilm, xerography, or any other means, or incorporated into any information retrieval system, electronic or mechanical, without the written permission of the publisher. All inquiries should be emailed to [email protected] ISBN (13) : 978-81-224-2481-2 PUBLISHING FOR ONE WORLD NEW AGE INTERNATIONAL (P) LIMITED, PUBLISHERS 4835/24, Ansari Road, Daryaganj, New Delhi - 110002 Visit us at www.newagepublishers.com To My Mother and Sister both brave women who fought and won over their common enemy ‘cancer’ in their seventies and sixties to give hope to younger generation of their sex, this book is lovingly dedicated. This page intentionally left blank Foreword It gives me pleasure to write the foreword to the book 'Extra High Voltage A.C. Transmission Engineering' authored by Rakosh Das Begamudre, Visiting Professor in Electrical Engineering at the Indian Institute of Technology, Kanpur. The field of e.h.v. is a very growing and dynamic one on which depends to a large measure the industrial growth of a developing country like ours. A course in this subject is offered for advanced under-graduate and postgraduate students, and the Institute also organized a short-term course for teachers in other learned institutions and practising engineers in India under the Quality Improvement Programme. With a background of nearly 35 years in this area in India, Japan, U.S.A. and Canada in teaching, design, research, and development, I consider Dr. Begamudre one of the ablest persons to undertake the task of writing a book, placing his wide experience at the disposal of younger engineers. He has worked at notable institutions such as the National Research Council of Canada and the Central Power Research Institute, Bangalore, and several other places. His publications in the field of e.h.v. transmission are numerous and varied in extent. The I.I.T. Kanpur offered him Visiting Professorship and I am delighted to introduce the book by him to learned readers in this important field. It is not only a worthy addition to the technical literature in this topic but also to the list of text books published in India. S. SAMPATH Director Indian Institute of Technology Kanpur This page intentionally left blank Preface to the Third Edition It is nearly a decade since the publication of the Second Edition of this text-reference book authored by me and needs a revision. No significant developments have taken place in the basic theory and principles of e.h.v. transmission engineering, except for increase in transmission-voltage levels, cables, magnitudes of power-handling capabilities, as well as of course the cost of equipment and lines. But two problems that need mentioning are: (1) harmonics injected into the system by modern extensive use and developments in Static VAR systems which have an effect on control and communication systems; and (2) effect on human health due to magnetic fields in the vicinity of the e.h.v. transmission line corridor. The first one of these is a very advanced topic and cannot be included in a first text on e.h.v. transmission engineering, as well as several other topics of a research nature fit for graduate-level theses and dissertations. The second topic is considered important enough from epidemiological point of view to necessitate elaboration. Thus a new addition has been made to Chapter 7 under the title: Magnetic Field Effects of E.H.V. Lines. Since the date of publication of the first edition, the I.E.E.E. in New York has thought it fit to introduce an additional transactions called I.E.E.E. Transactions on Power Delivery. The author has expanded the list of references at the end of the text to include titles of significant technical papers pertaining to transmission practice. The author wishes to acknowledge the encouragement received from Sri. V.R. Damodaran, Production Editor, New Age International (P) Ltd., for revising this text-reference book and preparation of the Third Edition. Vancouver, British Columbia, Canada. R.D. BEGAMUDRE
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