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PD CISPR/TR 18-3:2017 Radio interference characteristics of overhead power lines and high-voltage equipment - - Part 3: Code of practice for minimizing the generation of radio noise, 2018
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- CONTENTS
- FOREWORD
- INTRODUCTION
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Practical design of overhead power lines and associated equipment in order to control interference to radio broadcast sound and television reception [Go to Page]
- 4.1 Overview
- 4.2 Corona on conductors
- 4.3 Corona on metal hardware
- 4.4 Surface discharges on insulators [Go to Page]
- 4.4.1 Clean or slightly polluted insulators
- 4.4.2 Very polluted insulators
- 4.5 Spark and microsparks due to bad contacts, commutation effects
- 4.6 Defects on power lines and associated equipment in service
- 5 Methods of prediction of the reference level of an overhead line [Go to Page]
- 5.1 General
- 5.2 Correlation of data given elsewhere in this publication
- 5.3 CIGRÉ formula
- 5.4 Determination of 80 % level
- 5.5 Conclusions
- 6 Preventive and remedial measures to minimize radio noise generated by bad contacts and their detection and location [Go to Page]
- 6.1 General
- 6.2 Preventive and remedial measures
- 6.3 Methods of detecting and locating bad contacts
- 7 Formulae for predetermination of the radio noise field strength produced by large conductor bundles (more than four sub-conductors) andby tubular conductors [Go to Page]
- 7.1 Basic principles
- 7.2 Calculation of corona radio noise field strengths due to large bundles [Go to Page]
- 7.2.1 Procedure for the predetermination of the radio noise field strength
- 7.2.2 Calculation of the excitation function in heavy rain
- 7.2.3 Correction factor to evaluate the excitation function in other weather categories
- 7.2.4 Calculation of the radio noise field strength
- 7.3 Evaluation of corona radio noise field strength due to large tubular conductors
- 8 Figures
- Figures [Go to Page]
- Figure 1 – Bundle conductors
- Figure 2 – Line with conductors in a flat configuration
- Figure 3 – Line with conductors in a delta configuration
- Figure 4 – Line with conductors in a triangular configuration
- Figure 5 – Line with conductors in a flat configuration
- Figure 6 – Line with conductors in a delta configuration
- Figure 7 – Line with conductors in a triangular configuration
- Figure 8 – Tubular conductors of 40 cm diameter
- Annexes [Go to Page]
- Annex A (informative) Formulae for predicting the radio noise field strength from the conductors of an overhead line
- Tables [Go to Page]
- Table A.1 – Empirical methods, terms of the predetermination formulae developed by several institutions, survey
- Table A.2 – Empirical methods, complete predetermination formulae developed by several institutions, survey (1 of 2)
- Table A.3 – Predetermination formulae, examples for calculation of the absolute field strength levels (1 of 2)
- Table A.4 – Empirical methods, complete predetermination formulae for DC lines developed by several institutions, survey (1 of 2)
- Table A.5 – Formulae for calculation of the excitation function in fair weather for DC lines developed by several institutions, survey
- Annex B (informative) Configuration of an RF-based spark discharge detector and Direction Of Arrival (DOA) estimation method
- Figure B.1 – Configuration of RF-based spark discharge detector [17]
- Figure B.2 – Coordinates and arrangement of the four-antenna-square array
- Annex C (informative) Analytical procedure for the predetermination ofthe radio noise field strength, at a given distance from an overhead line with large bundle conductors
- Figure C.1 – Designation of the geometrical quantities for the simplified analytical method
- Figure C.2 – Lateral profiles of the radio noise field strengths produced bythe individual phases and of the total field, as calculated in the given example
- Bibliography [Go to Page]