{"id":242258,"date":"2024-10-19T15:52:37","date_gmt":"2024-10-19T15:52:37","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bsi-pd-cispr-tr-18-12017\/"},"modified":"2024-10-25T10:44:30","modified_gmt":"2024-10-25T10:44:30","slug":"bsi-pd-cispr-tr-18-12017","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bsi-pd-cispr-tr-18-12017\/","title":{"rendered":"BSI PD CISPR\/TR 18-1:2017"},"content":{"rendered":"

This part of CISPR 18, which is a Technical Report, applies to radio noise from overhead power lines, associated equipment, and high-voltage equipment which may cause interference to radio reception. The scope of this document includes the causes, measurement and effects of radio interference, design aspects in relation to this interference, methods and examples for establishing limits and prediction of tolerable levels of interference from high voltage overhead power lines and associated equipment, to the reception of radio signals and services.<\/p>\n

The frequency range covered is 0,15 MHz to 3 GHz.<\/p>\n

Radio frequency interference caused by the pantograph of overhead railway traction systems is not considered in this document.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nNational foreword <\/td>\n<\/tr>\n
4<\/td>\nCONTENTS <\/td>\n<\/tr>\n
7<\/td>\nFOREWORD <\/td>\n<\/tr>\n
9<\/td>\nINTRODUCTION <\/td>\n<\/tr>\n
11<\/td>\n1 Scope
2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n
12<\/td>\n4 Radio noise from HV AC overhead power lines
4.1 General <\/td>\n<\/tr>\n
13<\/td>\n4.2 Physical aspects of radio noise
4.2.1 Mechanism of formation of a noise field <\/td>\n<\/tr>\n
15<\/td>\n4.2.2 Definition of noise <\/td>\n<\/tr>\n
16<\/td>\n4.2.3 Influence of external parameters
4.3 Main characteristics of the noise field resulting from conductor corona
4.3.1 General
4.3.2 Frequency spectrum <\/td>\n<\/tr>\n
17<\/td>\n4.3.3 Lateral profile <\/td>\n<\/tr>\n
19<\/td>\n4.3.4 Statistical distribution with varying seasons and weather conditions <\/td>\n<\/tr>\n
20<\/td>\n5 Effects of corona from conductors
5.1 Physical aspects of corona from conductors
5.1.1 General <\/td>\n<\/tr>\n
21<\/td>\n5.1.2 Factors in corona generation <\/td>\n<\/tr>\n
22<\/td>\n5.2 Methods of investigation of corona by cages and test lines
5.2.1 General
5.2.2 Test cages <\/td>\n<\/tr>\n
23<\/td>\n5.2.3 Test lines
5.3 Methods of predetermination
5.3.1 General <\/td>\n<\/tr>\n
24<\/td>\n5.3.2 Analytical methods
5.3.3 CIGR\u00c9 method <\/td>\n<\/tr>\n
25<\/td>\n5.4 Catalogue of standard profiles
5.4.1 General
5.4.2 Principle of catalogue presentation <\/td>\n<\/tr>\n
26<\/td>\n6 Radio noise levels due to insulators, hardware and substation equipment (excluding bad contacts)
6.1 Physical aspects of radio noise sources
6.1.1 General <\/td>\n<\/tr>\n
27<\/td>\n6.1.2 Radio noise due to corona discharges at hardware
6.1.3 Radio noise due to insulators <\/td>\n<\/tr>\n
28<\/td>\n6.2 Correlation between radio noise voltage and the corresponding field strength for distributed and individual sources
6.2.1 General <\/td>\n<\/tr>\n
29<\/td>\n6.2.2 Semi-empirical approach and equation <\/td>\n<\/tr>\n
31<\/td>\n6.2.3 Analytical methods
6.2.4 Example of application <\/td>\n<\/tr>\n
32<\/td>\n6.3 Influence of ambient conditions
7 Sparking due to bad contacts
7.1 Physical aspects of the radio noise phenomenon <\/td>\n<\/tr>\n
33<\/td>\n7.2 Example of gap sources <\/td>\n<\/tr>\n
34<\/td>\n8 Radio noise from HVDC overhead power lines
8.1 General [56, 57]
8.1.1 Description of electric field physical phenomena of HVDC transmission systems <\/td>\n<\/tr>\n
35<\/td>\n8.1.2 Description of radio interference phenomena of HVDC transmission system
8.2 Physical aspects of DC corona <\/td>\n<\/tr>\n
36<\/td>\n8.3 Formation mechanism of a noise field from a DC line
8.4 Characteristics of the radio noise from DC lines
8.4.1 General
8.4.2 Frequency spectrum <\/td>\n<\/tr>\n
37<\/td>\n8.4.3 Lateral profile
8.4.4 Statistical distribution
8.5 Factors influencing the radio noise from DC lines
8.5.1 General <\/td>\n<\/tr>\n
38<\/td>\n8.5.2 Conductor surface conditions
8.5.3 Conductor surface gradient <\/td>\n<\/tr>\n
39<\/td>\n8.5.4 Polarity
8.5.5 Weather conditions <\/td>\n<\/tr>\n
40<\/td>\n8.5.6 Subjective effects
8.6 Calculation of the radio noise level due to conductor corona <\/td>\n<\/tr>\n
42<\/td>\n8.7 Radio noise due to insulators, hardware and substation equipment
8.8 Valve firing effects <\/td>\n<\/tr>\n
44<\/td>\n9 Figures
Figures
Figure 1 \u2013 Typical lateral attenuation curves for high voltage lines, normalized to a lateral distance of y0 = 15 m, distance in linear scale <\/td>\n<\/tr>\n
45<\/td>\nFigure 2 \u2013 Typical lateral attenuation curves for high voltage lines, normalized to a direct distance of D0 = 20 m, distance in logarithmic scale <\/td>\n<\/tr>\n
46<\/td>\nFigure 3 \u2013 Examples of statistical yearly distributions of radio-noise levels recorded continuously under various overhead lines <\/td>\n<\/tr>\n
47<\/td>\nFigure 4 \u2013 Examples of statistical yearly distributions of radio-noise levels recorded continuously under various overhead lines <\/td>\n<\/tr>\n
48<\/td>\nFigure 5 \u2013 Example of statistical yearly distributions of radio-noise levels recorded continuously under various overhead lines <\/td>\n<\/tr>\n
49<\/td>\nFigure 6 \u2013 Examples of statistical yearly distributions of radio-noise levels recorded continuously under various overhead lines <\/td>\n<\/tr>\n
50<\/td>\nFigure 7 \u2013 Equipotential lines for clean and dry insulation units
Figure 8 \u2013 Determination of the magnetic field strength from aperpendicular to a section of a line, at a distance x fromthe point of injection of noise current I <\/td>\n<\/tr>\n
51<\/td>\nFigure 9 \u2013 Longitudinal noise attenuation versus distance from noise source(from test results of various experiments frequencies around 0,5\u00a0MHz) <\/td>\n<\/tr>\n
52<\/td>\nFigure 10 \u2013 Lateral profile of the radio noise field strength produced by distributed discrete sources on a 420\u00a0kV line of infinite length <\/td>\n<\/tr>\n
53<\/td>\nFigure 11 \u2013 Impulsive radio-noise train of gap-type discharges
Figure 12 \u2013 Example of relative strength of radio noise field as a function of frequency below 1 GHz using QP detector <\/td>\n<\/tr>\n
54<\/td>\nFigure\u00a013 \u2013 Example of relative strength of radio noise field due to gap discharge as a function of frequency 200\u00a0MHz to 3\u00a0GHz using peak detector
Figure 14 \u2013 Example of relative strength of radio noise field as a function of the distance from the line <\/td>\n<\/tr>\n
55<\/td>\nFigure 15 \u2013 Unipolar and bipolar space charge regions of a HVDC transmission line
Figure 16 \u2013 The corona current and radio interference field <\/td>\n<\/tr>\n
56<\/td>\nAnnexes
Annex A (informative) Calculation of the voltage gradient at the surface of a conductor of an overhead line <\/td>\n<\/tr>\n
60<\/td>\nAnnex B (informative) Catalogue of profiles of radio noise field due to conductor corona for certain types of power line
Tables
Table B.1 \u2013 List of profiles <\/td>\n<\/tr>\n
61<\/td>\nFigure B.1 \u2013 Triangular formation (1) <\/td>\n<\/tr>\n
62<\/td>\nFigure B.2 \u2013 Triangular formation (2) <\/td>\n<\/tr>\n
63<\/td>\nFigure B.3 \u2013 Flat formation <\/td>\n<\/tr>\n
64<\/td>\nFigure B.4 \u2013 Arched formation <\/td>\n<\/tr>\n
65<\/td>\nFigure B.5 \u2013 Flat wide formation <\/td>\n<\/tr>\n
66<\/td>\nFigure B.6 \u2013 Vertical formation (480 (Rail) X\u00a04B) <\/td>\n<\/tr>\n
67<\/td>\nFigure B.7 \u2013 Flat formation <\/td>\n<\/tr>\n
68<\/td>\nFigure B.8 \u2013 Flat formation <\/td>\n<\/tr>\n
69<\/td>\nFigure B.9 \u2013 Arched formation <\/td>\n<\/tr>\n
70<\/td>\nFigure B.10 \u2013 Flat formation <\/td>\n<\/tr>\n
71<\/td>\nFigure B.11 \u2013 Arched formation <\/td>\n<\/tr>\n
72<\/td>\nFigure B.12 \u2013 Flat formation <\/td>\n<\/tr>\n
73<\/td>\nFigure B.13 \u2013 Vertical formation (480 (Cardinal) X\u00a06B) <\/td>\n<\/tr>\n
74<\/td>\nFigure B.14 \u2013 Typical frequency spectra for the radio noise fields of high voltage power lines <\/td>\n<\/tr>\n
75<\/td>\nFigure B.15 \u2013 Prediction of radio noise level of a transmission line for various types of weather <\/td>\n<\/tr>\n
76<\/td>\nAnnex C (informative) Summary of the catalogue of radio noise profiles according to the recommendations of the CISPR
Table C.1 \u2013 Radio noise profiles <\/td>\n<\/tr>\n
77<\/td>\nFigure C.1 \u2013 Examples of transformations of the profiles of Figures B.1 to B.13 using the direct distance of 20\u00a0m as reference <\/td>\n<\/tr>\n
78<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Radio interference characteristics of overhead power lines and high-voltage equipment – Part 1: Description of phenomena<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2017<\/td>\n84<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":242260,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[624,2641],"product_tag":[],"class_list":{"0":"post-242258","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-33-100-01","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/242258","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/242260"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=242258"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=242258"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=242258"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}