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BSI PD CISPR/TR 18-3:2017:2018 Edition

BSI PD CISPR/TR 18-3:2017:2018 Edition

$198.66

Radio interference characteristics of overhead power lines and high-voltage equipment – Part 3: Code of practice for minimizing the generation of radio noise

Published By Publication Date Number of Pages
BSI 2018 56
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This part of CISPR 18, which is a technical report, applies to radio noise from overhead power lines and high-voltage equipment which may cause interference to radio reception, excluding the fields from power line carrier signals.

The frequency range covered is 0,15 MHz to 3 GHz.

PDF Catalog

PDF Pages PDF Title
2 undefined
4 CONTENTS
6 FOREWORD
8 INTRODUCTION
9 1 Scope
2 Normative references
3 Terms and definitions
10 4 Practical design of overhead power lines and associated equipment in order to control interference to radio broadcast sound and television reception
4.1 Overview
4.2 Corona on conductors
4.3 Corona on metal hardware
11 4.4 Surface discharges on insulators
4.4.1 Clean or slightly polluted insulators
4.4.2 Very polluted insulators
12 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
5.1 General
13 5.2 Correlation of data given elsewhere in this publication
14 5.3 CIGRÉ formula
5.4 Determination of 80 % level
15 5.5 Conclusions
6 Preventive and remedial measures to minimize radio noise generated by bad contacts and their detection and location
6.1 General
6.2 Preventive and remedial measures
17 6.3 Methods of detecting and locating bad contacts
19 7 Formulae for predetermination of the radio noise field strength produced by large conductor bundles (more than four sub-conductors) andby tubular conductors
7.1 Basic principles
20 7.2 Calculation of corona radio noise field strengths due to large bundles
7.2.1 Procedure for the predetermination of the radio noise field strength
21 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
22 7.3 Evaluation of corona radio noise field strength due to large tubular conductors
24 8 Figures
Figures
Figure 1 – Bundle conductors
25 Figure 2 – Line with conductors in a flat configuration
26 Figure 3 – Line with conductors in a delta configuration
27 Figure 4 – Line with conductors in a triangular configuration
28 Figure 5 – Line with conductors in a flat configuration
29 Figure 6 – Line with conductors in a delta configuration
30 Figure 7 – Line with conductors in a triangular configuration
31 Figure 8 – Tubular conductors of 40 cm diameter
32 Annexes
Annex A (informative) Formulae for predicting the radio noise field strength from the conductors of an overhead line
34 Tables
Table A.1 – Empirical methods, terms of the predetermination formulae developed by several institutions, survey
36 Table A.2 – Empirical methods, complete predetermination formulae developed by several institutions, survey (1 of 2)
38 Table A.3 – Predetermination formulae, examples for calculation of the absolute field strength levels (1 of 2)
40 Table A.4 – Empirical methods, complete predetermination formulae for DC lines developed by several institutions, survey (1 of 2)
42 Table A.5 – Formulae for calculation of the excitation function in fair weather for DC lines developed by several institutions, survey
44 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]
45 Figure B.2 – Coordinates and arrangement of the four-antenna-square array
46 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
51 Figure C.1 – Designation of the geometrical quantities for the simplified analytical method
52 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
53 Bibliography

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