EN 50341-2-22-2016 en Overhead electrical lines exceeding AC 1 kV - Part 2-22 National Normative Aspects (NNA) for Poland.pdf

1、BS EN 50341-2-22:2016Overhead electrical linesexceeding AC 1 kVPart 2-22: National Normative Aspects(NNA) for Poland (based on EN50341-1:2012)BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN 50341-2-22:2016EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 503

2、41-2-22 March 2016 ICS 29.240.20 English Version Overhead electrical lines exceeding AC 1 kV - Part 2-22: National Normative Aspects (NNA) for Poland (based on EN 50341-1:2012) This European Standard was approved by CENELEC on 2016-02-16. CENELEC members are bound to comply with the CEN/CENELEC Inte

3、rnal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any

4、 CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the off

5、icial versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg,

6、 Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENE

7、LEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 50341-2-22:2016 E BS EN 50341-2-22:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of

8、 EN 50341-2-22:2016.This standard, together with the following list of National Normative Aspect standards, supersedes BS EN 50423-3:2005 and BS EN 50341-3:2001:Country CodeOrigin RefAT Austrian National Committee BS EN 50341-2-1BE Belgian National Committee BS EN 50341-2-2CH Swiss National Committe

9、e BS EN 50341-2-3DE German National Committee BS EN 50341-2-4DK Danish National Committee BS EN 50341-2-5ES Spanish National Committee BS EN 50341-2-6FI Finnish National Committee BS EN 50341-2-7FR French National Committee BS EN 50341-2-8GB British National Committee BS EN 50341-2-9GR Greek Nationa

10、l Committee BS EN 50341-2-10IE Irish National Committee BS EN 50341-2-11IS Iceland National Committee BS EN 50341-2-12IT Italian National Committee BS EN 50341-2-13LU Luxemburg National Committee No NNA availableNL Nederlands National Committee BS EN 50341-2-15NO Norwegian National Committee BS EN 5

11、0341-2-16PT Portuguese National Committee BS EN 50341-2-17SE Swedish National Committee BS EN 50341-2-18CZ Czech National Committee BS EN 50341-2-19:2015EE Estonian National Committee BS EN 50341-2-20:2015SI Slovak National Committee BS EN 50341-2-21PL Polish National Committee BS EN 50341-2-22:2016

12、BS EN 50423-3:2005 and BS EN 50341-3:2001 will be withdrawn upon publication of the rest of the series.The UK participation in its preparation was entrusted to Technical Committee PEL/11, Overhead Lines.A list of organizations represented on this committee can be obtained on request to its secretary

13、.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2016. Published by BSI Standards Limited 2016ISBN 978 0 580 92261 9ICS 29.240.20Compliance with a British Standard cannot con

14、fer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2016.Amendments/corrigenda issued since publicationDate Text affectedBS EN 50341-2-22:2016EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 503

15、41-2-22 March 2016 ICS 29.240.20 English Version Overhead electrical lines exceeding AC 1 kV - Part 2-22: National Normative Aspects (NNA) for Poland (based on EN 50341-1:2012) This European Standard was approved by CENELEC on 2016-02-16. CENELEC members are bound to comply with the CEN/CENELEC Inte

16、rnal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any

17、 CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the off

18、icial versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg,

19、 Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENE

20、LEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 50341-2-22:2016 E BS EN 50341-2-22:2016Poland 2/70 EN 50341-2-22:2016 Table of contents European foreword . 7 1. Scope . 8

21、 1.1 General . 8 1.2 Field of application 8 2. Normative references, definitions and symbols 8 2.1 Normative references 8 2.2 Definitions in alphabetical order in Polish language . 11 2.3 Definitions. 15 3. Basis of design . 16 3.2 Requirements of overhead lines 16 3.2.2 Reliability requirements . 1

22、6 3.2.3 Security requirements . 16 3.2.8 Durability 17 3.6 Design values . 16 3.6.2 Design value of an action 17 4. Action on lines 17 4.3 Wind loads . 17 4.3.1 Field of application and basic wind velocity 17 4.3.2 Mean wind velocity 18 4.3.3 Mean wind pressure 18 4.3.5 Wind forces on any overhead l

23、ine component 18 4.4 Wind forces on overhead line components 19 4.4.1 Wind forces on conductors 19 4.4.1.1 General 20 4.4.1.2 Structural factor . 20 4.4.1.3 Drag factor . 20 4.4.2 Wind forces on insulator sets 20 4.4.3 Wind forces on lattice towers 20 4.4.3.1 General. . 20 4.4.3.2 Method 1 20 4.4.4

24、Wind forces on poles . 20 4.5 Ice loads . 20 4.5.1 General 20 4.5.2 Ice forces on conductors . 22 4.6 Combined wind and ice loads 22 4.6.2 Drag factors and ice densities . 22 4.6.3 Mean wind pressure and peak wind pressure . 22 4.6.6 Combination of wind velocities and ice loads 22 4.6.6.1 Extreme ic

25、e load ITcombined with a high probability wind velocity VIH22 BS EN 50341-2-22:2016Poland 3/70 EN 50341-2-22:2016 4.6.6.2 Nominal ice load I3combined with low probability wind velocity VIL. 22 4.7 Temperature effects . 23 4.8 Security loads . 23 4.8.1 General 23 4.9 Safety loads . 23 4.9.2 Loads rel

26、ated to the weight of linesmen 23 4.10 Forces due to short circuit currents. 23 4.12 Load cases . 23 4.12.1 General 23 4.12.2 Standard load cases 23 4.13 Partial factors for actions . 25 5. Electrical requirements 25 5.2 Currents . 25 5.2.1 Normal current . 26 5.3 Insulation co-ordination26 5.5 Mini

27、mum air clearance distances to avoid flashover 26 5.5.3 Empirical method based on European experience 26 5.6 Load cases for calculation of clearances 26 5.6.2 Maximum conductor temperature 27 5.6.3 Wind loads for determination of electric clearances 27 5.6.3.2 Nominal wind loads for determination of

28、 internal and external clearances 27 5.6.3.3 Extreme wind load for determination of internal clearances 27 5.6.4 Ice loads for determination of electric clearances . 27 5.6.5 Combined wind and ice loads . 28 5.8 Internal clearances within the span and at the top of support . 28 5.9 External clearanc

29、es 34 5.9.1 General 34 5.9.2 External clearances to ground in areas remote from buildings, roads, etc. 34 5.9.3 External clearances to residential and other buildings 36 5.9.4 External clearances to crossing traffic routes . 39 5.9.5 External clearances to adjacent traffic routes . 42 5.9.6 External

30、 clearances to other power lines or overhead telecommunication lines . 44 5.9.7 External clearances to recreational areas (playgrounds, sport areas, etc.) 46 5.10 Corona effect 48 5.10.1 Radio noise . 48 5.10.1.3 Noise limits . 48 5.10.2 Audible noise . 48 5.10.2.3 Noise limits 48 5.11 Electric and

31、magnetic fields . 49 5.11.1 Electric and magnetic fields under a line 49 6. Earthing systems 49 6.1.2 Requirements for dimensioning of earthing systems 49 BS EN 50341-2-22:2016Poland 2/70 EN 50341-2-22:2016 Table of contents European foreword . 7 1. Scope . 8 1.1 General . 8 1.2 Field of application

32、 8 2. Normative references, definitions and symbols 8 2.1 Normative references 8 2.2 Definitions in alphabetical order in Polish language . 11 2.3 Definitions. 15 3. Basis of design . 16 3.2 Requirements of overhead lines 16 3.2.2 Reliability requirements . 16 3.2.3 Security requirements . 16 3.2.8

33、Durability 17 3.6 Design values . 16 3.6.2 Design value of an action 17 4. Action on lines 17 4.3 Wind loads . 17 4.3.1 Field of application and basic wind velocity 17 4.3.2 Mean wind velocity 18 4.3.3 Mean wind pressure 18 4.3.5 Wind forces on any overhead line component 18 4.4 Wind forces on overh

34、ead line components 19 4.4.1 Wind forces on conductors 19 4.4.1.1 General 20 4.4.1.2 Structural factor . 20 4.4.1.3 Drag factor . 20 4.4.2 Wind forces on insulator sets 20 4.4.3 Wind forces on lattice towers 20 4.4.3.1 General. . 20 4.4.3.2 Method 1 20 4.4.4 Wind forces on poles . 20 4.5 Ice loads .

35、 20 4.5.1 General 20 4.5.2 Ice forces on conductors . 22 4.6 Combined wind and ice loads 22 4.6.2 Drag factors and ice densities . 22 4.6.3 Mean wind pressure and peak wind pressure . 22 4.6.6 Combination of wind velocities and ice loads 22 4.6.6.1 Extreme ice load ITcombined with a high probability

36、 wind velocity VIH22 BS EN 50341-2-22:2016Poland 3/70 EN 50341-2-22:2016 4.6.6.2 Nominal ice load I3combined with low probability wind velocity VIL. 22 4.7 Temperature effects . 23 4.8 Security loads . 23 4.8.1 General 23 4.9 Safety loads . 23 4.9.2 Loads related to the weight of linesmen 23 4.10 Fo

37、rces due to short circuit currents. 23 4.12 Load cases . 23 4.12.1 General 23 4.12.2 Standard load cases 23 4.13 Partial factors for actions . 25 5. Electrical requirements 25 5.2 Currents . 25 5.2.1 Normal current . 26 5.3 Insulation co-ordination26 5.5 Minimum air clearance distances to avoid flas

38、hover 26 5.5.3 Empirical method based on European experience 26 5.6 Load cases for calculation of clearances 26 5.6.2 Maximum conductor temperature 27 5.6.3 Wind loads for determination of electric clearances 27 5.6.3.2 Nominal wind loads for determination of internal and external clearances 27 5.6.

39、3.3 Extreme wind load for determination of internal clearances 27 5.6.4 Ice loads for determination of electric clearances . 27 5.6.5 Combined wind and ice loads . 28 5.8 Internal clearances within the span and at the top of support . 28 5.9 External clearances 34 5.9.1 General 34 5.9.2 External cle

40、arances to ground in areas remote from buildings, roads, etc. 34 5.9.3 External clearances to residential and other buildings 36 5.9.4 External clearances to crossing traffic routes . 39 5.9.5 External clearances to adjacent traffic routes . 42 5.9.6 External clearances to other power lines or overh

41、ead telecommunication lines . 44 5.9.7 External clearances to recreational areas (playgrounds, sport areas, etc.) 46 5.10 Corona effect 48 5.10.1 Radio noise . 48 5.10.1.3 Noise limits . 48 5.10.2 Audible noise . 48 5.10.2.3 Noise limits 48 5.11 Electric and magnetic fields . 49 5.11.1 Electric and

42、magnetic fields under a line 49 6. Earthing systems 49 6.1.2 Requirements for dimensioning of earthing systems 49 BS EN 50341-2-22:2016EN 50341-2-22:2016 4/70 Poland 6.1.3 Earthing measures against lightning effects . 49 6.1.4 Transferred potentials . 50 6.2 Ratings with regard to corrosion and mech

43、anical strength 50 6.2.2 Earthing and bonding conductors 50 6.3 Dimensioning with regard to thermal strength . 50 6.3.2 Current rating calculation 50 6.4 Dimensioning with regard to human safety 50 6.4.1 Permissible values for touch voltages . 50 6.4.3 Basic design of earthing systems with regard to

44、 permissible touch voltage . 50 6.4.4 Measures in systems with isolated neutral or resonant earthing 51 6.5 Site inspection and documentation of earthing systems . 51 7. Supports . 51 7.1 Initial design consideration 7.1.1 Introduction 51 7.2 Materials 7.2.3 Requirements for steel grades subject to

45、galvanising. 51 7.3 Lattice steel towers 52 7.3.1 General 52 7.3.5 Structural analysis . 52 7.3.6 Ultimate limit states . 52 7.3.6.1 General . 52 7.3.6.2 Resistance of cross section areas . 52 7.3.6.3 Tension, bending and compression resistance of members 52 7.3.6.4 Buckling resistance of members in

46、 compression . 52 7.3.7 Serviceability limit states . 53 7.3.8 Resistance of connections 53 7.3.9 Design assisted by testing . 53 7.4 Steel poles . 53 7.4.1 General 53 7.4.5 Structural analysis (EN 1993-1-1:2005 Chapter 5) 53 7.4.6 Ultimate limit states (EN 1993-1-1:2005 Chapter 6) 53 7.4.6.1 Genera

47、l . 53 7.4.7 Serviceability limit states (EN 1993-1-1:2005 Chapter 7) 54 7.4.8 Resistance of connections 54 7.4.8.2 Bolts (other than holding-down bolts) . 54 7.4.8.4 Flanged bolted connections 54 7.4.9 Design assisted by testing . 54 7.5 Wood poles 54 7.5.1 General 54 7.5.3 Materials 54 7.5.4 Durab

48、ility 55 BS EN 50341-2-22:2016Poland 5/70 EN 50341-2-22:2016 7.5.5 Ultimate limit states . 55 7.5.5.3 Resistance of wood elements . 55 7.5.6 Serviceability limit states . 56 7.6 Concrete poles . 56 7.6.1 General 56 7.6.3 Materials 56 7.6.4 Ultimate limit states . 57 7.6.5 Serviceability limit states

49、 . 57 7.9 Corrosion protection and finishes 57 7.9.2 Galvanising 57 7.9.5 Decorative finishes 57 7.9.7 Protection of wood poles . 57 7.10 Maintenance facilities . 58 7.10.1 Climbing . 58 7.10.2 Maintainability 58 7.10.3 Safety requirements 58 7.11 Loading tests 58 7.12 Assembly and erection . 58 8. Foundations . 58 8.1 Introduction 58 8.2 Basis of geotechnical design (EN 1997-1:2004 Section 2) . 58 8.2.1 General 58 8.2.2 Geotechnical