1、 TR CISPR 18-1Edition 2.0 2010-06TECHNICAL REPORT Radio interference characteristics of overhead power lines and high-voltage equipment Part 1:Description of phenomena TR CISPR 18-1:2010(E)INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE Copyrighted material licensed to BR Demo by Thomson Reute
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10、istribution is permitted.Uncontrolled when printed.TR CISPR 18-1Edition 2.0 2010-06TECHNICAL REPORT Radio interference characteristics of overhead power lines and high-voltage equipment Part 1:Description of phenomena INTERNATIONAL ELECTROTECHNICAL COMMISSION XBICS 33.100.01 PRICE CODEISBN 978-2-889
11、12-016-1INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE Registered trademark of the International Electrotechnical Commission Copyrighted material licensed to BR Demo by Thomson Reuters(Scientific),Inc.,downloaded on Nov-28-2014 by James Madison.No further reproduction or distribution is permi
12、tted.Uncontrolled when printed.2 TR CISPR 18-1 IEC:2010(E)CONTENTS FOREWORD.5 INTRODUCTION.7 1 Scope.8 2 Normative references.8 3 Terms and definitions.8 4 Radio noise from power lines.9 4.1 General.9 4.2 Physical aspects of radio noise.9 4.2.1 Mechanism of formation of a noise field.9 4.2.2 Definit
13、ion of noise.12 4.2.3 Influence of external parameters.12 4.3 Main characteristics of the noise field resulting from conductor corona.13 4.3.1 General.13 4.3.2 Frequency spectrum.13 4.3.3 Lateral profile.14 4.3.4 Statistical distribution with varying seasons and weather conditions.16 5 Effects of co
14、rona from conductors.17 5.1 Physical aspects of corona from conductors.17 5.1.1 General.17 5.1.2 Factors in corona generation.17 5.2 Methods of investigation of corona by cages and test lines.19 5.2.1 General.19 5.2.2 Test cages.19 5.2.3 Test lines.20 5.3 Methods of predetermination.20 5.3.1 General
15、.20 5.3.2 Analytical methods.20 5.3.3 CIGR method.21 5.4 Catalogue of standard profiles.21 5.4.1 General.21 5.4.2 Principle of catalogue presentation.21 6 Radio noise levels due to insulators,hardware and substation equipment (excluding bad contacts).23 6.1 Physical aspects of radio noise sources.23
16、 6.1.1 General.23 6.1.2 Radio noise due to corona discharges at hardware.23 6.1.3 Radio noise due to insulators.23 6.2 Correlation between radio noise voltage and the corresponding field strength for distributed and individual sources.25 6.2.1 General.25 6.2.2 Semi-empirical approach and formula.25 6.2.3 Analytical methods.27 6.2.4 Example of application.28 6.3 Influence of ambient conditions.28 7 Sparking due to bad contacts.28 7.1 Physical aspects of the radio noise phenomenon.28 Copyrighte
