High Voltage Problems

"Bridges the gap between laboratory research and practical applications in industry and power utilities-clearly organized into three distinct sections that cover basic theories and concepts, execution of principles, and innovative new techniques. Includes new chapters detailing industrial uses and isues of hazard and safety, and review excercises to accompany each chpter."

This concise textbook is intended for undergraduate students of electrical engineering offering a course in high voltage engineering. Written in an easy-to-understand style, the text acquaints students with the physical phenomena and technical problems associated with high voltages in power systems. A complete quantitative description of the topics in high voltage engineering is difficult because of the statistical nature of the electrical breakdown phenomena in insulators. With this in mind, this book has been written to provide a basic treatment of high voltage engineering qualitatively, and wherever necessary quantitatively. Special emphasis has been laid on breakdown mechanisms in gaseous dielectrics as it helps students gain a sound conceptual base for appreciating high voltage problems. The origin and nature of lightning and switching overvoltages occurring in power systems have been explained and illustrated with practical observations. Protection of high voltage insulation against such overvoltages has also been discussed lucidly. Concept of modern digital methods of high voltage testing of insulators, transformers, and cables has been explained. Solved problems help students develop a critical appreciation of the concepts discussed. End-of-chapter questions enable students to obtain a more in-depth understanding of the key concepts.

This book is based on the leading German reference book on high voltage engineering. It includes innovative insulation concepts, new physical knowledge and new insulating materials, emerging techniques for testing, measuring and diagnosis, as well as new fields of application, such as high voltage direct current (HVDC) transmission. It provides an excellent access to high voltage engineering – for engineers, experts and scientists, as well as for students. High voltage engineering is not only a key technology for a safe, economic and sustainable electricity supply, which has become one of the most important challenges for modern society. Furthermore, a broad spectrum of industrial applications of high voltage technologies is used in most of the innovative fields of engineering and science. The book comprehensively covers the contents ranging from electrical field stresses and dielectric strengths through dielectrics, materials and technologies to typical insulation systems for AC, DC and impulse stresses. Thereby, the book provides a unique and successful combination of scientific foundations, modern technologies and practical applications, and it is clearly illustrated by many figures, examples and exercises. Therefore, it is an essential tool both for teaching at universities and for the users of high voltage technologies.

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 E.H.V. Cable Transmission Upto 1200 Kv Is Gaining Ground With Oil-Filled, Pplp, Xlpe, And Sf6 Insulation.The Book Covers All Topics That Are Considered Essential For Understanding The Operation And Design Of E.H.V. 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.

The second edition of High Voltage Test Techniques has been completely revised. The present revision takes into account the latest international developments in High Voltage and Measurement technology, making it an essential reference for engineers in the testing field. High Voltage Technology belongs to the traditional area of Electrical Engineering. However, this is not to say that the area has stood still. New insulating materials, computing methods and voltage levels repeatedly pose new problems or open up methods of solution; electromagnetic compatibility (EMC) or components and systems also demand increased attention. The authors hope that their experience will be of use to students of Electrical Engineering confronted with High Voltage problems in their studies, in research and development and also in the testing field. Benefit from a completely revised edition Brings you up-to-date with th latest international developments in High Voltage and Measurement technology An essential reference for engineers in the testing field