Sinnvoll24
Overhead Power Lines
Planning, Design, Construction, Power Systems
Langbeschreibung
RezensionFrom the reviews: "Overhead Power Lines presents not only the scientific and engineering basis for the electric and mechanical design, but also comprehensively describes all aspects of most recent technology, including the selection and design of components. In addition, the book carefully considers the changing economic and technical environment of the overhead power line business. This publication is intended to introduce students and beginners to the full range of relevant topics of line design and implementation and to serve as a valuable reference." (ETDE Energy Database, 2003)
Hauptbeschreibung
The basic elements of overhead power line technology have been known for many years. However, this technology has continuously developed, for example, adjusting the design of the lines to new transmission needs and to available rights-of-way, and to accommodate environmental concerns or resources. Since many existing overhead line installations are approaching the end of their economic and technical lifetime, strategies for maintenance to extending their operational life are needed. Also, because of the introduction of new standards and deregulation, the basis of design and verification for all aspects and steps in overhead line planning and construction has changed. The industry, therefore, requires a publication reflecting these developments and changes. Overhead Power Lines present not only the scientific and engineering basis for the electric and mechanical design, but also comprehensively describe all aspects of most recent technology, including the selection and design of components such as conductors, insulators, fittings, supports and foundations. The chapters on line survey, construction and maintenance address updated requirements and solutions. In addition, the book carefully considers the changing economic and technical environment of the overhead power line business. This publication is intended to introduce students and beginners to the full range of relevant topics of line design and implementation, and to serve as a valuable reference to engineers and technicians employed by overhead line operators, contractors and consulting companies to carry out their daily tasks. The book also supplies everyone else in the electric-energy supply industry, including design, maintenance, and construction engineers, with a ready reference. This first English-language edition is based on the 5th German-language edition and incorporates the latest international standards sponsored by Cigré, the International Council of Large Electric Systems, IEC and CENELEC. The authors are recognized experts who have long participated in, and actively contributed, to Cigré.
Inhaltsverzeichnis
Overall planning.- Electric requirements and design.- Electric parameters.- Lightning protection.- Earthing.- Requirements on loading and strength.- Selection of conductors.- Earth wire selection.- Insulators.- Overhead line fittings.- Conductor vibrations.- Supports.- Foundations.- Sag and tension calculations.- Route selection and detailed line design.- Construction.- Commissioning, operation and line management.
Inhaltsangabe1 Overall planning.- 1.0 Symbols.- 1.1 Development stages of a transmission project.- 1.2 Transmission planning.- 1.2.1 Objective.- 1.2.2 Planning stages.- 1.2.3 Planning aspects regarding transmission lines.- 1.3 Planning methods.- 1.3.1 Data acquisition and preparation.- 1.3.2 Formulation and preselection of alternatives.- 1.3.3 Electrical studies.- 1.3.4 Economic studies and final evaluation.- 1.4 Planning criteria.- 1.4.1 General.- 1.4.2 Criteria for steady-state conditions.- 1.4.3 Criteria for temporary and transient conditions.- 1.5 Evolution and selection of voltage levels.- 1.5.1 Evolution of transmission voltages.- 1.5.2 Introduction of transmission voltages.- 1.6 Conductor selection.- 1.7 Selection of line configuration.- 1.8 Direct current transmission.- 1.8.1 Aspects of DC transmission components.- 1.8.2 Economic comparison of DC and AC lines.- 1.8.3 Technical comparison of AC and DC transmission.- 1.8.4 Practical use of DC transmission.- 1.9 Transmission with higher order phase lines.- 1.9.1 Options.- 1.9.2 Properties of multiple-phase systems.- 1.9.3 Present experience.- 1.10 Investments.- 1.11 Licences and permit procedures.- 1.12 Underground transmission versus overhead lines.- 1.12.1 Application and planning aspects.- 1.12.2 Environmental constraints.- 1.12.3 Technical limitations.- 1.12.4 Comparative investments.- 1.12.5 Perspectives.- 1.13 Results of overall planning.- 1.14 References.- 2 Electric requirements and design.- 2.0 Symbols.- 2.1 Overhead lines as components of electric systems.- 2.1.1 Surge impedance and surge impedance load (natural power).- 2.1.2 Stability.- 2.1.3 Voltage regulation and maximum permissible losses.- 2.1.4 Capability of a line.- 2.1.5 Reliability and availability.- 2.1.6 Reactive power compensation.- 2.1.7 Power transmitted versus right-of-way width.- 2.2 Current-related phenomena.- 2.2.1 Normal and emergency conditions.- 2.2.2 Ohmic losses.- 2.2.3 Short circuit condition.- 2.3 Voltage and current-related phenomena.- 2.3.1 Introduction.- 2.3.2 Electrical and magnetic fields.- 2.3.3 Corona phenomena and related effects.- 2.3.4 Audible noise (AN).- 2.3.5 Impact of line design on voltage- and current-depending phenomena.- 2.4 Line performance and insulation requirements.- 2.4.1 Introduction.- 2.4.2 Power frequency voltages and temporary overvoltages.- 2.4.3 Slow-front overvoltages.- 2.4.4 Fast-front overvoltages.- 2.4.5 Principles of insulation coordination.- 2.4.6 Live-line maintenance.- 2.5 Clearances.- 2.5.1 Clearance requirements.- 2.5.2 Internal and external clearances.- 2.6 References.- 3 Electric parameters.- 3.0 Symbols.- 3.1 Introduction.- 3.2 Resistance.- 3.3 Positive-sequence impedance.- 3.3.1 Introduction.- 3.3.2 Inductance and inductive Reactance.- 3.4 Zero-sequence impedance.- 3.4.1 Introduction.- 3.4.2 Simplified approach for the determination of zero-sequence impedances.- 3.5 Capacitance and capacitive reactance.- 3.5.1 General considerations.- 3.5.2 Single-circuit lines.- 3.5.3 Double-circuit lines.- 3.6 Admittance.- 3.7 Electric representation of lines.- 3.7.1 Goals and basic conditions.- 3.7.2 Short- and medium-length lines.- 3.7.3 Long-length transmission lines.- 3.8 References.- 4 Lightning protection.- 4.0 Symbols.- 4.1 Significance of lightning.- 4.2 Formation of lightning strokes.- 4.2.1 Mechanism of lightning discharge.- 4.2.2 Impulse behaviour of lightning discharges.- 4.2.3 Electric characteristics of the discharges.- 4.3 Frequency and intensity of lightning strokes.- 4.3.1 Keraunic levels and earth flash density.- 4.3.2 Magnitude of lightning stroke currents.- 4.3.3 Direct and indirect lightning strokes.- 4.4 Arrangement and efficiency of earth wires.- 4.4.1 Theoretical background.- 4.4.2 Effective shielding by earth wires.- 4.4.3 Surge arresters.- 4.4.4 Assessment of lightning performance of overhead lines.- 4.5 Earthing in view of lightning protection.- 4.5.1 Significance of earthing for lightning protection.- 4.5.2 Surge impedance of earthing systems
Autor*in:
Friedrich Kiessling
Art:
Kartoniert
Sprache :
Englisch
ISBN-13:
9783642055560
Verlag:
Springer Verlag GmbH
Erscheinungsdatum:
22.10.2010
Erscheinungsjahr:
2010
Ausgabe:
1/2003
Maße:
23.50x15.50x0.00 cm
Seiten:
759
Gewicht:
1187 g
287,83 €
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