Rating of Electric Power Cables in Unfavorable Thermal Environment

ISBN-13: 9780471679097 / Angielski / Twarda / 2005 / 326 str.

George J. Anders

Opis

Rating of Electric Power Cables in Unfavorable Thermal Environment is the first text to provide you with the computational tools and techniques needed to successfully design and install power cables in areas affected by such factors as outside heat sources, ground moisture, or impediments to heat dissipation. After thoroughly reviewing standard rating models, the author discusses several new techniques designed to improve cable ampacity, as well as new computational techniques for analysis of cyclic loads. To facilitate computational tasks he utilizes six representational model cables throughout the book, including transmission-class, high-voltage, distribution, and bundled types. End-of-chapter summaries, liberal numerical examples, and practical, real world applications make this text a valuable resource for making better design and operation decisions.

Recenzje

"…provides electrical engineers and power professionals a better understanding of these unfavorable thermal conditions and practical methods to calculate and design cost–effective yet dependable power circuits." ( E–STREAMS, May 2006)

"This reference book should be on the bookshelf of power engineers or application engineers...a practical and excellent resource…" (IEEE Electrical Insulation Magazine, November/December 2005)

Spis treści

1. Review of power cable standard rating methods.

2. Ampacity reduction factors for cables crossing thermally unfavorable regions.

3. Cable crossings – derating considerations.

4. Application of thermal backfills for cables crossing unfavorable thermal environments.

5. Special considerations for real–time rating analysis and deeply buried cables.

6. Installations involving multiple cables in air.

7. Rating of pipe–type cables with slow circulation of dielectric fluid.

Appendix A: Computations of the mean moisture content in media surrounding underground power cables.

Appendix B: Estimation of backfill thermal resistivity.

Appendix C: Equations for dielectric fluid parameters.

O autorze

GEORGE J. ANDERS, PhD, received a master′s degree in electrical engineering from the Technical University of Lodz in Poland in 1973 and an MSc degree in mathematics and a PhD in power system reliability from the University of Toronto in 1977 and 1980, respectively. In 2000, he received a doctor of science degree from the Technical University of Lodz. Dr. Anders has over thirty years′ experience in solving electric power system problems and has been involved in the development of power cable calculation methods and application of advanced techniques in power system analysis. He has written several books, including Rating of Electric Power Cables: Ampacity Computations for Transmission, Distribution, and Industrial Applications, and published over seventy papers in several international journals. Dr. Anders is a Fellow of the IEEE.

Blurb

A cutting–edge resource on the ampacity calculations of power cables in diverse environments

The restructuring of the electric power industry has led to more heavily loaded transmission circuits than ever before. Consequently, cable–rating standards need to address diverse environmental conditions that can result in thermal overloads.

Rating of Electric Power Cables in Unfavorable Thermal Environment is the first text to provide energy professionals with the computational tools and techniques needed to successfully analyze the thermal behavior of power cables in areas affected by such factors as outside heat sources, ground moisture, or impediments to heat dissipation.

After a thorough review of standard rating models, the author discusses several new techniques designed to improve cable ampacity, as well as new computational techniques for analysis of cyclic loads. The author utilizes six representational model cables throughout the book to facilitate computational tasks, including transmission–class, high–voltage distribution, and bundled types.

Advanced topics include:

• Continuous and time–dependent rating equations for underground and aerial cables
• Cables crossing other heat sources or short sections with high soil thermal resistivity
• Soil dry–out and transient rating calculations
• The application of thermal backfill, including nonlinear optimization of backfill design and the probabilistic analysis of cable ampacity
• Load variability and transient rating calculations
• Rating issues for cables in air– and pipe–type cables with slow oil circulation

End–of–chapter summaries, liberal numerical examples, and practical, real–world applications make this text a valuable resource for energy professionals seeking to make better design and operation decisions.