EN 50549-1:2019

Requirements for generating plants to be connected in parallel with distribution networks - Part 1: Connection to a LV distribution network - Generating plants up to and including Type B

These standards provide technical requirements for the connection of generating plants up to and including Type A (-1-1)/ Type B (-1-2) which can be operated in parallel with a public LV distribution network. They are intended to be used as a technical reference for connection agreements between DNOs and electricity producers and to demonstrate compliance with COMMISSION REGULATION (EU) 2016/631 (Requirements for Generators).

Anforderungen für zum Parallelbetrieb mit einem Verteilnetz vorgesehene Erzeugungsanlagen - Teil 1: Anschluss an das Niederspannungsverteilnetz - Erzeugungsanlagen bis einschließlich Typ B

Exigences relatives aux centrales électriques destinées à être raccordées en parallèle à des réseaux de distribution - Partie 1: Raccordement à un réseau de distribution BT - Centrales électriques jusqu’au Type B inclus

Zahteve za vzporedno vezavo generatorskih postrojev z razdelilnim omrežjem - 1. del: Vezava z nizkonapetostnim razdelilnim omrežjem - Generatorski postroji do vključno tipa B

Ti standardi podajajo tehnične zahteve za povezovanje generatorskih postrojev do vključno tipa A (-1-1)/tipa B (-1-2), ki jih je mogoče upravljati vzporedno z javnim nizkonapetostnim razdelilnim omrežjem. Namen njihove uporabe je tehnična referenca za dogovore o priključku med upravljavci razdelilnih omrežij in proizvajalci električne energije ter izkazovanje skladnosti z UREDBO KOMISIJE (EU) 2016/631 (Zahteve za generatorje).

General Information

• Status: Published
• Publication Date: 31-Jan-2019
• Withdrawal Date: 31-Jan-2022
• ICS: 29.160.20 - Generators
• Technical Committee: CLC/TC 8X - System aspects of electrical energy supply
• Drafting Committee: CLC/TC 8X/WG 03 - Requirements for connection of generators to distribution networks
• Directive: 2016/631 - Commission Regulation (EU) 2016/631 of 14 April 2016 establishing a network code on requirements for grid connection of generators
• Mandate: M/490 - Standardisation mandate to the European Standardisation Organisations (ESOs) to support European Smart Grid deployment
• Ref Project: SIST EN 50549-1:2019 - Requirements for generating plants to be connected in parallel with distribution networks - Part 1: Connection to a LV distribution network - Generating plants up to and including Type B

Relations

• Replaces: CLC/TS 50549-1:2015 - Requirements for generating plants to be connected in parallel with distribution networks - Part 1: Connection to a LV distribution network above 16 A
• Effective Date: 23-Jan-2023
• Replaces: EN 50438:2013/IS1:2015 - Requirements for micro-generating plants to be connected in parallel with public low-voltage distribution networks
• Effective Date: 23-Aug-2016
• Amended By: EN 50549-1:2019/A1:2023 - Requirements for generating plants to be connected in parallel with distribution networks - Part 1: Connection to a LV distribution network - Generating plants up to and including Type B
• Effective Date: 22-Mar-2022
• Corrected By: EN 50549-1:2019/AC:2019-04 - Requirements for generating plants to be connected in parallel with distribution networks - Part 1: Connection to a LV distribution network - Generating plants up to and including Type B
• Effective Date: 07-Jun-2022
• Revised: EN 50438:2013 - Requirements for micro-generating plants to be connected in parallel with public low-voltage distribution networks
• Effective Date: 23-Aug-2016

Standards Content (Sample)

SLOVENSKI STANDARD
01-april-2019
1DGRPHãþD
SIST EN 50438:2014
SIST EN 50438:2014/IS1:2015
SIST-TS CLC/TS 50549-1:2015
=DKWHYH]DY]SRUHGQRYH]DYRJHQHUDWRUVNLKSRVWURMHY]UD]GHOLOQLPRPUHåMHP
GHO9H]DYD]QL]NRQDSHWRVWQLPUD]GHOLOQLPRPUHåMHP*HQHUDWRUVNLSRVWURMLGR
YNOMXþQRWLSD$
Requirements for generating plants to be connected in parallel with distribution networks
- Part 1-1: Connection to a LV distribution network – Generating plants up to and
including Type A
Anforderungen für zum Parallelbetrieb mit einem Verteilnetz vorgesehene
Erzeugungsanlagen - Teil 1: Anschluss an das Niederspannungsverteilnetz bis
einschließlich Typ B
Exigences relatives aux centrales électriques destinées à être raccordées en parallèle à
des réseaux de distribution - Partie 1: Raccordement à un réseau de distribution BT -
Centrales électriques jusqu’au Type B inclus
Ta slovenski standard je istoveten z: EN 50549-1:2019
ICS:
29.160.20 Generatorji Generators
29.240.01 2PUHåMD]DSUHQRVLQ Power transmission and
GLVWULEXFLMRHOHNWULþQHHQHUJLMH distribution networks in
QDVSORãQR general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 50549-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2019
ICS 29.160.20 Supersedes CLC/TS 50549-1:2015, EN 50438:2013, EN
50438:2013/IS1:2015
English Version
Requirements for generating plants to be connected in parallel
with distribution networks - Part 1: Connection to a LV
distribution network - Generating plants up to and including Type
B
Exigences relatives aux centrales électriques destinées à Anforderungen für zum Parallelbetrieb mit einem Verteilnetz
être raccordées en parallèle à des réseaux de distribution - vorgesehene Erzeugungsanlagen - Teil 1: Anschluss an
Partie 1: Raccordement à un réseau de distribution BT - das Niederspannungsverteilnetz bis einschließlich Typ B
Centrales électriques jusqu'au Type B inclus
This European Standard was approved by CENELEC on 2018-08-09. CENELEC members are bound to comply with the CEN/CENELEC
Internal 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 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 official 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, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50549-1:2019 E
Contents Page
European foreword . 4
Introduction. 5
1 Scope . 8
2 Normative references . 9
3 Terms and definitions . 9
3.1 General . 9
3.2 Plant, module and unit . 11
3.3 Power . 14
3.4 Voltage . 15
3.5 Circuit theory . 16
3.6 Protection . 18
3.7 Control . 22
4 Requirements on generating plants . 23
4.1 General . 23
4.2 Connection scheme . 24
4.3 Choice of switchgear . 24
4.3.1 General . 24
4.3.2 Interface switch . 24
4.4 Normal operating range . 25
4.4.1 General . 25
4.4.2 Operating frequency range . 25
4.4.3 Minimal requirement for active power delivery at underfrequency . 26
4.4.4 Continuous operating voltage range . 27
4.5 Immunity to disturbances . 27
4.5.1 General . 27
4.5.2 Rate of change of frequency (ROCOF) immunity . 27
4.5.3 Under-voltage ride through (UVRT) . 28
4.5.4 Over-voltage ride through (OVRT) . 29
4.6 Active response to frequency deviation . 30
4.6.1 Power response to overfrequency . 30
4.6.2 Power response to underfrequency. 33
4.7 Power response to voltage changes . 36
4.7.1 General . 36
4.7.2 Voltage support by reactive power . 36
4.7.3 Voltage related active power reduction . 41
4.7.4 Short circuit current requirements on generating plants . 41
4.8 EMC and power quality . 42
4.9 Interface protection . 43
4.9.1 General . 43
4.9.2 Void . 44
4.9.3 Requirements on voltage and frequency protection . 45
4.9.4 Means to detect island situation . 47
4.9.5 Digital input to the interface protection . 48
4.10 Connection and starting to generate electrical power. 48
4.10.1 General . 48
4.10.2 Automatic reconnection after tripping . 48
4.10.3 Starting to generate electrical power . 48
4.10.4 Synchronization . 49
4.11 Ceasing and reduction of active power on set point . 49
4.11.1 Ceasing active power . 49
4.11.2 Reduction of active power on set point . 49
4.12 Remote information exchange . 49
4.13 Requirements regarding single fault tolerance of interface protection system
and interface switch . 50
Annex A (informative)  Interconnection guidance . 51
A.1 General . 51
A.2 Network integration . 51
A.3 Clusters of single-phase generating units . 52
Annex B (informative) Void . 53
Annex C (informative)  Parameter Table . 54
Annex D (informative) List of national requirements applicable for generating plants . 59
Annex E (informative) Loss of Mains and overall power system security . 61
Annex F (informative) Examples of protection strategies . 62
F.1 Introduction . 62
F.1.1 General . 62
F.1.2 Generalities . 62
F.1.3 Detection of unwanted islands . 62
F.1.4 Problems with uncontrolled islanding in MV networks . 63
F.1.4.1 Safety . 63
F.1.4.2 Grid parameters . 63
F.1.4.3 Reclosing operations . 63
F.1.4.4 Protection of islands against overcurrents . 63
F.1.4.5 Protection against phase to earth faults . 63
F.2 Example strategy 1 . 64
F.3 Example strategy 2 . 67
Annex G (normative) Abbreviations . 69
Annex H (informative) Relationship between this European standard and the
COMMISSION REGULATION (EU) 2016/631 . 70
Bibliography . 71

European foreword
This document (EN 50549-1:2019) has been prepared by CLC/TC 8X “System aspects of electrical
energy supply”.
The following dates are fixed:
• latest date by which this document has to be (dop) 2019-08-01
implemented at national level by publication
of an identical national standard or by
endorsement
• latest date by which the national standards (dow) 2022-02-01
conflicting with this document have to
be withdrawn
This document supersedes EN 50438:2013 and CLC/TS 50549-1:2015.
This European Standard relates to both the RfG European Network Code and current technical market
needs. Its purpose is to give detailed description of functions to be implemented in products.
This European Standard is also intended to serve as a technical reference for the definition of national
requirements where the RfG European Network Code requirements allow flexible implementation. The
specified requirements are solely technical requirements; economic issues regarding, e.g. the bearing
of cost are not in the scope of this document.
CLC/TC 8X plans future standardization work in order to ensure the compatibility of this European
Standard (EN) with the evolution of the legal framework.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Introduction
Rationale for the content an
...

SLOVENSKI STANDARD
01-april-2019
Nadomešča:
SIST EN 50438:2014
SIST EN 50438:2014/IS1:2015
SIST-TS CLC/TS 50549-1:2015
Zahteve za vzporedno vezavo generatorskih postrojev z razdelilnim omrežjem - 1.
del: Vezava z nizkonapetostnim razdelilnim omrežjem - Generatorski postroji do
vključno tipa B
Requirements for generating plants to be connected in parallel with distribution networks
- Part 1: Connection to a LV distribution network - Generating plants up to and including
Type B
Anforderungen für zum Parallelbetrieb mit einem Verteilnetz vorgesehene
Erzeugungsanlagen - Teil 1: Anschluss an das Niederspannungsverteilnetz bis
einschließlich Typ B
Exigences relatives aux centrales électriques destinées à être raccordées en parallèle à
des réseaux de distribution - Partie 1: Raccordement à un réseau de distribution BT -
Centrales électriques jusqu’au Type B inclus
Ta slovenski standard je istoveten z: EN 50549-1:2019
ICS:
29.160.20 Generatorji Generators
29.240.01 Omrežja za prenos in Power transmission and
distribucijo električne energije distribution networks in
na splošno general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 50549-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2019
ICS 29.160.20 Supersedes CLC/TS 50549-1:2015, EN 50438:2013, EN
50438:2013/IS1:2015
English Version
Requirements for generating plants to be connected in parallel
with distribution networks - Part 1: Connection to a LV
distribution network - Generating plants up to and including Type
B
Exigences relatives aux centrales électriques destinées à Anforderungen für zum Parallelbetrieb mit einem Verteilnetz
être raccordées en parallèle à des réseaux de distribution - vorgesehene Erzeugungsanlagen - Teil 1: Anschluss an
Partie 1: Raccordement à un réseau de distribution BT - das Niederspannungsverteilnetz bis einschließlich Typ B
Centrales électriques jusqu'au Type B inclus
This European Standard was approved by CENELEC on 2018-08-09. CENELEC members are bound to comply with the CEN/CENELEC
Internal 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 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 official 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, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50549-1:2019 E
Contents Page
European foreword . 4
Introduction. 5
1 Scope . 8
2 Normative references . 9
3 Terms and definitions . 9
3.1 General . 9
3.2 Plant, module and unit . 11
3.3 Power . 14
3.4 Voltage . 15
3.5 Circuit theory . 16
3.6 Protection . 18
3.7 Control . 22
4 Requirements on generating plants . 23
4.1 General . 23
4.2 Connection scheme . 24
4.3 Choice of switchgear . 24
4.3.1 General . 24
4.3.2 Interface switch . 24
4.4 Normal operating range . 25
4.4.1 General . 25
4.4.2 Operating frequency range . 25
4.4.3 Minimal requirement for active power delivery at underfrequency . 26
4.4.4 Continuous operating voltage range . 27
4.5 Immunity to disturbances . 27
4.5.1 General . 27
4.5.2 Rate of change of frequency (ROCOF) immunity . 27
4.5.3 Under-voltage ride through (UVRT) . 28
4.5.4 Over-voltage ride through (OVRT) . 29
4.6 Active response to frequency deviation . 30
4.6.1 Power response to overfrequency . 30
4.6.2 Power response to underfrequency. 33
4.7 Power response to voltage changes . 36
4.7.1 General . 36
4.7.2 Voltage support by reactive power . 36
4.7.3 Voltage related active power reduction . 41
4.7.4 Short circuit current requirements on generating plants . 41
4.8 EMC and power quality . 42
4.9 Interface protection . 43
4.9.1 General . 43
4.9.2 Void . 44
4.9.3 Requirements on voltage and frequency protection . 45
4.9.4 Means to detect island situation . 47
4.9.5 Digital input to the interface protection . 48
4.10 Connection and starting to generate electrical power. 48
4.10.1 General . 48
4.10.2 Automatic reconnection after tripping . 48
4.10.3 Starting to generate electrical power . 48
4.10.4 Synchronization . 49
4.11 Ceasing and reduction of active power on set point . 49
4.11.1 Ceasing active power . 49
4.11.2 Reduction of active power on set point . 49
4.12 Remote information exchange . 49
4.13 Requirements regarding single fault tolerance of interface protection system
and interface switch . 50
Annex A (informative)  Interconnection guidance . 51
A.1 General . 51
A.2 Network integration . 51
A.3 Clusters of single-phase generating units . 52
Annex B (informative) Void . 53
Annex C (informative)  Parameter Table . 54
Annex D (informative) List of national requirements applicable for generating plants . 59
Annex E (informative) Loss of Mains and overall power system security . 61
Annex F (informative) Examples of protection strategies . 62
F.1 Introduction . 62
F.1.1 General . 62
F.1.2 Generalities . 62
F.1.3 Detection of unwanted islands . 62
F.1.4 Problems with uncontrolled islanding in MV networks . 63
F.1.4.1 Safety . 63
F.1.4.2 Grid parameters . 63
F.1.4.3 Reclosing operations . 63
F.1.4.4 Protection of islands against overcurrents . 63
F.1.4.5 Protection against phase to earth faults . 63
F.2 Example strategy 1 . 64
F.3 Example strategy 2 . 67
Annex G (normative) Abbreviations . 69
Annex H (informative) Relationship between this European standard and the
COMMISSION REGULATION (EU) 2016/631 . 70
Bibliography . 71

European foreword
This document (EN 50549-1:2019) has been prepared by CLC/TC 8X “System aspects of electrical
energy supply”.
The following dates are fixed:
• latest date by which this document has to be (dop) 2019-08-01
implemented at national level by publication
of an identical national standard or by
endorsement
• latest date by which the national standards (dow) 2022-02-01
conflicting with this document have to
be withdrawn
This document supersedes EN 50438:2013 and CLC/TS 50549-1:2015.
This European Standard relates to both the RfG European Network Code and current technical market
needs. Its purpose is to give detailed description of functions to be implemented in products.
This European Standard is also intended to serve as a technical reference for the definition of national
requirements where the RfG European Network Code requirements allow flexible implementation. The
specified requirements are solely technical requirements; economic issues regarding, e.g. the bearing
of cost are not in the scope of this document.
CLC/TC 8X plans future standardization work in order to ensure the compatibility of this European
Standard (EN) with the evolution of the legal framework.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Introduction
Rationale for the content and structure
...

S L O V E N S K I SIST EN 50549-1

S T A N D A R D  april 2019
Zahteve za vzporedno vezavo generatorskih postrojev z razdelilnim
omrežjem – 1. del: Vezava z nizkonapetostnim razdelilnim omrežjem –
Generatorski postroji do vključno tipa B

Requirements for generating plants to be connected in parallel with distribution
networks – Part 1: Connection to a LV distribution network – Generating plants up
to and including Type B
Exigences relatives aux centrales électriques destinées à être raccordées en
parallèle à des réseaux de distribution – Partie 1: Raccordement à un réseau de
distribution BT – Centrales électriques jusqu'au Type B inclus

Anforderungen für zum Parallelbetrieb mit einem Verteilnetz vorgesehene
Erzeugungsanlagen – Teil 1: Anschluss an das Niederspannungsverteilnetz bis
einschließlich Typ B
Referenčna oznaka
ICS 22.160.20; 29.240.01 SIST EN 50549-1:2019 (sl)

Nadaljevanje na straneh II do III in od 1 do 72

2022-12. Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno.

SIST EN 50549-1 : 2019
NACIONALNI UVOD
Standard SIST EN 50549-1 (sl), Zahteve za vzporedno vezavo generatorskih postrojev z razdelilnim
omrežjem – 1. del: Vezava z nizkonapetostnim razdelilnim omrežjem – Generatorski postroji do vključno
tipa B, 2019, ima status slovenskega standarda in je istoveten evropskemu standardu EN 50549-1 (en),
Requirements for generating plants to be connected in parallel with distribution networks – Part 1:
Connection to a LV distribution network – Generating plants up to and including Type B, 2019.

Ta standard nadomešča SIST-TS CLC/TS 50549-1:2015.

NACIONALNI PREDGOVOR
Evropski standard EN 50549-1:2019 je pripravil tehnični odbor Evropskega komiteja za standardizacijo
v elektrotehniki CLC/TC 8X Sistemski vidiki oskrbe z električno energijo.

Slovenski standard SIST EN 50549-1:2019 je prevod evropskega standarda EN 50549-1:2019. V
primeru spora glede besedila slovenskega prevoda v tem standardu je odločilen izvirni evropski
standard v angleškem jeziku. Slovensko izdajo standarda je pripravil tehnični odbor SIST/NTF Oskrba
z električno energijo.
Odločitev za privzem tega standarda je v marcu 2019 sprejel tehnični odbor SIST/TC NTF Oskrba z
električno energijo.
ZVEZE S STANDARDI
S privzemom tega evropskega standarda veljajo za omejeni namen referenčnih standardov vsi
standardi, navedeni v izvirniku, razen standarda, ki je že sprejet v nacionalno standardizacijo:

SIST EN 50549-2 Zahteve za vzporedno vezavo generatorskih postrojev z razdelilnim omrežjem
– 2. del: Vezava s srednjenapetostnim razdelilnim omrežjem do vključno tipa
B
SIST EN 60255-127 Merilni releji in zaščitna oprema - 127. del: Funkcijske zahteve za pre- in
podnapetostno zaščito (IEC 60255-127)
SIST EN 61000-4-30 Elektromagnetna združljivost (EMC) - 4-30. del: Preskusne in merilne tehnike
- Metode merjenja kakovosti napetosti (IEC 61000-4-30)
SIST HD 60364-1 Nizkonapetostne električne inštalacije - 1. del: Temeljna načela, ocena
splošnih karakteristik, definicije
SIST HD 60364-5-551 Nizkonapetostne električne inštalacije - 5-55. del: Izbira in namestitev
električne opreme - Druga oprema - 551. točka: Nizkonapetostni generatorji

OSNOVA ZA IZDAJO STANDARDA
– privzem standarda EN 50549-1:2019

PREDHODNA IZDAJA
– SIST-TS CLC/TS 50549-1:2015, Zahteve za priklop generatorjev za toke nad 16 A na fazo – 1. del:
Priklop na nizkonapetostni distribucijski sistem

OPOMBE
– Povsod, kjer se v besedilu standarda uporablja izraz “evropski standard”, v SIST EN 50549-1:2019
to pomeni “slovenski standard”.

– Nacionalni uvod in nacionalni predgovor nista sestavni del standarda.

II
SIST EN 50549-1 : 2019
– Ta nacionalni dokument je istoveten EN 50549-1:2019 in je objavljen z dovoljenjem

CEN-CENELEC
Upravni center
Rue de la Science 23
B-1040 Bruselj
This national document is identical with EN 50549-1:2019 and is published with the permission of

CEN-CENELEC
Management Centre
Rue de la Science
B-1040 Brussels
III
SIST EN 50549-1 : 2019
(prazna stran)
IV
EVROPSKI STANDARD              EN 50549-1
EUROPEAN STANDARD
NORME EUROPÉENNE
februar 2019
EUROPÄISCHE NORM
ICS 29.160.20 Nadomešča CLC/TS 50549-1:2015, EN 50438:2013,
EN 50438:2013/IS1:2015
Slovenska izdaja
Zahteve za vzporedno vezavo generatorskih postrojev z razdelilnim
omrežjem – 1. del: Vezava z nizkonapetostnim razdelilnim omrežjem –
Generatorski postroji do vključno tipa B

Requirements for generating Exigences relatives aux Anforderungen für zum
plants to be connected in centrales électriques destinées Parallelbetrieb mit einem
parallel with distribution à être raccordées en parallèle à Verteilnetz vorgesehene
networks – Part 1: Connection des réseaux de distribution – Erzeugungsanlagen –
to a LV distribution network – Partie 1: Raccordement à un Teil 1: Anschluss an das
Generating plants up to and réseau de distribution BT – Niederspannungsverteilnetz bis
including Type B Centrales électriques jusqu'au einschließlich Typ B
Type B inclus
Ta evropski standard je CENELEC sprejel 9. avgusta 2018. Člani CENELEC morajo izpolnjevati
notranje predpise CEN/CENELEC, s katerimi so predpisani pogoji za privzem tega evropskega
standarda na nacionalno raven brez kakršnihkoli sprememb.

Najnovejši seznami teh nacionalnih standardov z njihovimi bibliografskimi podatki se na zahtevo lahko
dobijo pri Upravnem centru CEN-CENELEC ali kateremkoli članu CENELEC.

Ta evropski standard obstaja v treh uradnih izdajah (angleški, francoski in nemški). Izdaje v drugih
jezikih, ki jih člani CENELEC na lastno odgovornost prevedejo in izdajo ter prijavijo pri Upravnem centru
CEN-CENELEC, veljajo kot uradne izdaje.

Člani CENELEC so nacionalni elektrotehniški komiteji Avstrije, Belgije, Bolgarije, Cipra, Češke
republike, Danske, Estonije, Finske, Francije, Hrvaške, Grčije, Irske, Islandije, Italije, Latvije, Litve,
Luksemburga, Malte, Nekdanje jugoslovanske republike Makedonije, Madžarske, Nemčije,
Nizozemske, Norveške, Poljske, Portugalske, Romunije, Slovaške, Slovenije, Srbije, Španije, Švedske,
Švice, Turčije in Združenega kraljestva.

CENELEC
Evropski komite za standardizacijo v elektrotehniki
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Upravni center CEN-CENELEC: Rue de la Science 23, B-1000 Brussels

© 2019 CENELEC Vse pravice do izkoriščanja v kakršnikoli obliki in na kakršenkoli Ref. oznaka EN 50549-1:2019 E
način imajo nacionalni člani CENELEC.

SIST EN 50549-1 : 2019
VSEBINA Stran
Evropski predgovor . 4
Uvod . 5
1 Področje uporabe . 8
2 Zveze s standardi . 9
3 Izrazi in definicije . 9
3.1 Splošno . 9
3.2 Postroj, modul in enota .11
3.3 Moč .13
3.4 Napetost .14
3.5 Teorija vezij .15
3.6 Zaščita .17
3.7 Krmiljenje .21
3.8 Toleranca posamezne okvare .22
3.9 Istovzročne odpovedi, odpovedi s skupnim vzrokom .23
4 Zahteve za proizvodne postroje .23
4.1 Splošno .23
4.2 Shema priključitve .24
4.3 Izbira stikalne naprave .24
4.3.1 Splošno .24
4.3.2 Vmesniško stikalo .24
4.4 Normalno območje delovanja .25
4.4.1 Splošno .25
4.4.2 Območje obratovalnih frekvenc .25
4.4.3 Minimalne zahteve za dobavo delovne energije pri podfrekvenci .25
4.4.4 Območje neprekinjene obratovalne napetosti .26
4.5 Odpornost proti motnjam .27
4.5.1 Splošno .27
4.5.2 Stopnja odpornosti proti spremembi frekvence (ROCOF) .27
4.5.3 Podnapetostno obratovanje (UVRT) .27
4.5.4 Prenapetostno obratovanje (OVRT) .29
4.6 Aktivni odziv na odstopanje frekvence .30
4.6.1 Odziv električne moči na nadfrekvenco .30
4.6.2 Odziv električne moči na podfrekvenco .33
4.7 Odziv električne moči na spremembe napetosti .36
4.7.1 Splošno .36
4.7.2 Napetostna podpora z jalovo močjo .36
4.7.3 Zmanjšanje delovne moči, povezano z napetostjo .41
4.7.4 Zahteve glede toka kratkega stika v proizvodnih postrojih .41
4.8 EMC in kakovost električne energije .42
SIST EN 50549-1 : 2019
4.9 Vmesniška zaščita .43
4.9.1 Splošno .43
4.9.2 Prazno .45
4.9.3 Zahteve za napetostno in frekvenčno zaščito .45
4.9.4 Sredstva za odkrivanje otočenja .47
4.9.5 Digitalni vhod na vmesniški zaščiti .48
4.10 Priključitev in začetek proizvodnje električne energije .48
4.10.1 Splošno .48
4.10.2 Avtomatski ponovni vklop po izklopu .48
4.10.3 Začetek proizvodnje električne energije .49
4.10.4 Sinhronizacija .49
4.11 Prekinitev in zmanjšanje delovne moči na nastavitveni točki .50
4.11.1 Prekinitev delovne moči .50
4.11.2 Zmanjšanje delovne moči na nastavitveni točki .50
4.12 Izm
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