Modern power transmission is utilizing voltages between 345 kV and 1150 kV, A.C. Distances of transmission and bulk powers handled have increased to such an extent that extra high voltages and ultra high voltages (EHV and UHV) are necessary. The problems encountered with such high voltage transmission lines exposed to nature are electrostatic fields near the lines, audible noise, radio interference, corona losses, carrier and TV interference, high voltage gradients, heavy bundled conductors, control of voltages at power frequency using shunt reactors of the switched type which inject harmonics into the system, switched capacitors, overvoltages caused by lightning and switching operations, long air gaps with weak insulating properties for switching surges, ground-return effects, and many more. The important topic of EHV cable transmission up to 1200 kV is gaining ground with oil-filled, PPLP, XLPE, and SF, insulation.
The book covers all topics that are considered essential for understanding the operation and design of EHV ac overhead lines and underground cables. Theoretical analyses of all problems combined with practical application are presented in detail. EHV laboratory equipment and testing are fully covered together with application of digital recorders, fibre optics, etc. for impulse measurements. Every chapter contains many worked examples in order to illustrate and reinforce the theory. All examples are taken from practical situations as far as possible.
ABOUT THE AUTHOR R D Begamudre
Rakosh Das Begamudre has been actively engaged in research, development, teaching and consultation in electrical machinery, energy conversion and high voltage electrical power engineering in the last 6 decades in India, U.S.A. and Canada. He holds the B.Sc. degree in Electrical and Mechanical Engineering from the Banaras Hindu University (B.H.U.) and A.I.I.Sc. (Master`s degree) from the Indian Institute of Science in Bangalore and the Ph.D. degree from the Lehigh University in Bethlehem (Pennsylvania). His training in large and high voltage testing of transformers and other rotating machines was at the factories of Hitachi Ltd. in Japan. Subsequently he worked as a graduate student in high voltage engineering under the guidance of Professor S. Hayashi. After returning to India, he taught at the Mysore University and was also a faculty member of the Roorkee University and then at the Banaras Hindu University. Then he travelled to U.S.A. and came under the influence of Dean Loyal Vivian Bewley and Professor Archie Miller. Then after 4 years at Lehigh, he went to Canada and worked at the National Research Council for 4 years at Ottawa. Then he taught at the Royal Military College at Kingston, Ontario, Canada and at the Capilano College in Vancouver. Then he became manager of Walden Noxter Laboratories in Lillooet, B.C. Canada. Upon returning to India, he was associated with the Central Power Research Institute, being associated with the high voltage labs.
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