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BSI PD CISPR/TR 18-3:2017 – TC:2020 Edition

BSI PD CISPR/TR 18-3:2017 – TC:2020 Edition

$258.95

Tracked Changes. Radio interference characteristics of overhead power lines and high-voltage equipment – Code of practice for minimizing the generation of radio noise

Published By Publication Date Number of Pages
BSI 2020 116
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CISPR TR 18-3:2017 is available as /2 which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition. CISPR TR 18-3:2017 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. This third edition cancels and replaces the second edition published in 2010. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: – localisation system of spark discharges which might contain frequency components up to 3 GHz; – information regarding equations for predetermination of the radio noise level from HVDC overhead power lines. Keywords: radio noise from overhead power lines and high-voltage equipment

PDF Catalog

PDF Pages PDF Title
62 undefined
64 CONTENTS
66 FOREWORD
68 INTRODUCTION
69 1 Scope
2 Normative references
3 Terms and definitions
70 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
71 4.4 Surface discharges on insulators
4.4.1 Clean or slightly polluted insulators
4.4.2 Very polluted insulators
72 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
73 5.2 Correlation of data given elsewhere in this publication
74 5.3 CIGRÉ formula
5.4 Determination of 80 % level
75 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
77 6.3 Methods of detecting and locating bad contacts
79 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
80 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
81 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
82 7.3 Evaluation of corona radio noise field strength due to large tubular conductors
84 8 Figures
Figures
Figure 1 – Bundle conductors
85 Figure 2 – Line with conductors in a flat configuration
86 Figure 3 – Line with conductors in a delta configuration
87 Figure 4 – Line with conductors in a triangular configuration
88 Figure 5 – Line with conductors in a flat configuration
89 Figure 6 – Line with conductors in a delta configuration
90 Figure 7 – Line with conductors in a triangular configuration
91 Figure 8 – Tubular conductors of 40 cm diameter
92 Annexes
Annex A (informative) Formulae for predicting the radio noise field strength from the conductors of an overhead line
94 Tables
Table A.1 – Empirical methods, terms of the predetermination formulae developed by several institutions, survey
96 Table A.2 – Empirical methods, complete predetermination formulae developed by several institutions, survey (1 of 2)
98 Table A.3 – Predetermination formulae, examples for calculation of the absolute field strength levels (1 of 2)
100 Table A.4 – Empirical methods, complete predetermination formulae for DC lines developed by several institutions, survey (1 of 2)
102 Table A.5 – Formulae for calculation of the excitation function in fair weather for DC lines developed by several institutions, survey
104 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]
105 Figure B.2 – Coordinates and arrangement of the four-antenna-square array
106 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
111 Figure C.1 – Designation of the geometrical quantities for the simplified analytical method
112 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
113 Bibliography

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BSI PD CISPR/TR 18-3:2017 - TC
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