EN 62689-2:2017
(Main)Current and voltage sensors or detectors, to be used for fault passage indication purposes - Part 2: System aspects
Current and voltage sensors or detectors, to be used for fault passage indication purposes - Part 2: System aspects
IEC 62689-2:2016 describes electric phenomena and electric system behaviour during faults, according to the most widely diffused distribution system architecture and to fault typologies, to define the functional requirements for fault passage indicators (FPI) and distribution substation units (DSU) (including their current and/or voltage sensors), which are, respectively, a device or a device/combination of devices and/or of functions able to detect faults and provide indications about their localization. By localization of the fault is meant the fault position with respect to the FPI/DSU installation point on the network (upstream or downstream from the FPI/DSU's location) or the direction of the fault current flowing through the FPI itself. The fault localization may be obtained - directly from the FPI/DSU, or - from a central system using information from more FPIs or DSUs, considering the features and the operating conditions of the electric system where the FPIs/DSUs are installed. This part of IEC 62689 is therefore aimed at helping users in the appropriate choice of FPIs/DSUs (or of a system based on FPI/DSU information) properly operating in their networks, considering adopted solutions and operation rules (defined by tradition and/or depending on possible constraints concerning continuity and quality of voltage supply defined by a national regulator), and also taking into account complexity of the apparatus and consequent cost. This part of IEC 62689 is mainly focused on system behaviour during faults, which is the "core" of FPI/DSU fault detection capability classes described in IEC 62689-1, where all requirements are specified in detail.
Strom- und Spannungs-Sensoren oder Anzeigegeräte zur Erkennung von Kurz- und Erdschlüssen - Teil 2: Systemaspekte
Capteurs ou détecteurs de courant et de tension, à utiliser pour indiquer le passage d'un courant de défaut - Partie 2: Aspects systèmes
L'IEC 62689-2:2016 décrit les phénomènes électriques et le comportement de réseaux électriques en présence de défauts, selon l'architecture de système de distribution la plus diffusée et les typologies de défauts. Il définit les exigences fonctionnelles pour les indicateurs de passage de courant de défaut (FPI) et les unités de poste de distribution (DSU) (y compris pour leurs capteurs de courant et/ou de tension) qui sont respectivement matérialisés par un dispositif ou un dispositif/une combinaison de dispositifs et/ou de fonctions pouvant détecter des défauts et les localiser. La localisation d'un défaut est définie par la position du défaut par rapport au point d'installation des FPI/DSU sur le réseau (en amont ou en aval de l'emplacement des FPI/DSU) ou la direction du courant de défaut qui traverse le FPI. La localisation du défaut peut être obtenue: - directement depuis le FPI/la DSU, ou - depuis un système central, à l'aide des informations d'autres FPI ou DSU, en tenant compte des fonctionnalités et des conditions d'exploitation du réseau électrique sur lequel les FPI/DSU sont installés. Par conséquent, l'objectif de la présente partie de l'IEC 62689 est d'aider les utilisateurs à bien choisir leur FPI/DSU (ou un système utilisant des informations de FPI/DSU) pour une exploitation optimale sur leurs réseaux, en prenant en considération les solutions adoptées et les règles d'exploitation (définies par la coutume et/ou en fonction des éventuelles contraintes relatives à la continuité et la qualité de la tension d'alimentation définies par l'organisme national de règlementation), sans oublier la complexité et le coût de l'appareil. Dans la présente partie de l'IEC 62689, le premier "niveau" de classification FPI/DSU est défini, d'après le comportement du réseau en présence de défauts. La classification FPI/DSU est développée de manière exhaustive dans l'IEC 62689-1, dans laquelle toutes les exigences sont définies.
Tokovna in napetostna zaznavala in detektorji, ki se uporabljajo za javljanje mesta okvare - 2. del: Sistemski vidiki (IEC 62689-2:2016)
Ta del standarda IEC 62689 opisuje električne pojave in obnašanje električnega sistema med okvarami skladno z najbolj razširjeno arhitekturo distribucijskega sistema in tipologijami okvar za namene opredelitve funkcionalnih zahtev za javljalnike mesta okvare (FPI) in distribucijske postaje (DSU) (vključno z njihovimi zaznavali za tok in/ali napetost), ki so naprava ali naprava/skupek naprav in/ali funkcij, ki lahko zaznajo okvare in podajo indikacije glede njihove lokalizacije.
Lokalizacija okvare pomeni mesto okvare glede na mesto namestitve javljalnika mesta okvare/distribucijske postaje v omrežju (na visoko- ali nizkonapetostni strani glede na javljalnik mesta okvare/distribucijsko postajo) ali smer okvarnega toka, ki teče skozi javljalnik mesta okvare. Lokalizacija okvare se lahko pridobi
• neposredno iz javljalnika mesta okvare/distribucijske postaje ali
• pri centralnem sistemu z uporabo informacij več javljalnikov mesta okvare ali distribucijskih postaj,
ob upoštevanju lastnosti in obratovalnih pogojev električnega sistema, v katerem so nameščeni javljalniki mesta okvare/distribucijske postaje.
Ta del standarda IEC 62689 je tako namenjen pomoči uporabnikom pri izbiri ustreznih javljalnikov mesta okvare/distribucijskih postaj (ali sistema, ki temelji na informacijah javljalnika mesta okvare/distribucijske postaje), ki pravilno delujejo v njihovih omrežjih glede na sprejete rešitve in pravila delovanja (opredeljena skladno z običaji in/ali glede na možne omejitve glede neprekinjenosti in kakovosti napajanja, ki jih opredeli nacionalni organ), pri čemer se upoštevajo tudi kompleksnost naprave in posledični stroški.
Ta del standarda IEC 62689 se osredotoča predvsem na obnašanje sistema med okvarami, kar predstavlja »jedro« razredov zmogljivosti zaznavanja okvar javljalnikov mesta okvare/distribucijskih postaj, opisanih v standardu IEC 62689-1, ki vsebuje podrobne opise vseh zahtev.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-november-2017
Tokovna in napetostna zaznavala in detektorji, ki se uporabljajo za javljanje mesta
okvare - 2. del: Sistemski vidiki (IEC 62689-2:2016)
Current and voltage sensors or detectors, to be used for fault passage indication
purposes - Part 2: System aspects (IEC 62689-2:2016)
Ta slovenski standard je istoveten z: EN 62689-2:2017
ICS:
17.220.20 0HUMHQMHHOHNWULþQLKLQ Measurement of electrical
PDJQHWQLKYHOLþLQ and magnetic quantities
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN 62689-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2017
ICS 17.220.20
English Version
Current and voltage sensors or detectors, to be used for fault
passage indication purposes - Part 2: System aspects
(IEC 62689-2:2016)
Capteurs ou détecteurs de courant et de tension, à utiliser Strom- und Spannungs-Sensoren oder Anzeigegeräte zur
pour indiquer le passage d'un courant de défaut - Erkennung von Kurz- und Erdschlüssen -
Partie 2: Aspects systèmes Teil 2: Systemaspekte
(IEC 62689-2:2016) (IEC 62689-2:2016)
This European Standard was approved by CENELEC on 2017-06-17. 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: Avenue Marnix 17, B-1000 Brussels
© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 62689-2:2017 E
European foreword
The text of document 38/504/FDIS, future edition 1 of IEC 62689-2, prepared by IEC/TC 38
"Instrument transformers" was submitted to the IEC-CENELEC parallel vote and approved by
CENELEC as EN 62689-2:2017.
The following dates are fixed:
(dop) 2018-03-22
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2020-09-22
standards conflicting with the
document have to be withdrawn
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.
Endorsement notice
The text of the International Standard IEC 62689-2:2016 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 60044-7 NOTE Harmonized as EN 60044-7.
IEC 60044-8 NOTE Harmonized as EN 60044-8.
IEC 60721-3-4 NOTE Harmonized as EN 60721-3-4.
IEC 60870-5-101 NOTE Harmonized as EN 60870-5-101.
IEC 60870-5-104 NOTE Harmonized as EN 60870-5-104.
IEC 61850-7-2 NOTE Harmonized as EN 61850-7-2.
IEC 61850-7-3 NOTE Harmonized as EN 61850-7-3.
IEC 61869-1 NOTE Harmonized as EN 61869-1.
IEC 61869-4 NOTE Harmonized as EN 61869-4.
IEC 61869-6 NOTE Harmonized as EN 61869-6.
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 62689-1 - Current and voltage sensors or detectors, EN 62689-1 -
to be used for fault passage indication
purposes -
Part 1: General principles and
requirements
IEC 62689-2 ®
Edition 1.0 2016-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Current and voltage sensors or detectors, to be used for fault passage
indication purposes –
Part 2: System aspects
Capteurs ou détecteurs de courant et de tension, à utiliser pour indiquer
le passage d'un courant de défaut –
Partie 2: Aspects systèmes
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.220.20 ISBN 978-2-8322-3385-6
– 2 – IEC 62689-2:2016 © IEC 2016
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 9
2 Normative references . 9
3 Terms, definitions, abbreviations and symbols . 9
3.1 Terms and definitions related to neutral point treatment . 10
3.2 Abbreviations and symbols . 10
4 Choice of FPI/DSU requirements related to fault detection according to network
operation mode and fault type . 10
4.1 General . 10
4.2 FPIs/DSUs for isolated neutral system . 10
4.2.1 Earth fault detection . 10
4.2.2 Polyphase fault detection . 11
4.3 FPIs/DSUs for resonant earthed (neutral) system – arc-suppression-coil-
earth (neutral) system . 11
4.3.1 Earth fault detection . 11
4.3.2 Polyphase fault detection . 12
4.4 FPIs/DSUs for solidly earthed neutral systems (systems with low-impedance
earthed neutrals) . 12
4.5 FPIs/DSUs for impedance earthed neutral system (resistive impedance
earthed neutral system ) . 12
4.5.1 Earth fault detection . 12
4.5.2 Polyphase fault detection . 13
4.6 FPIs/DSUs for systems with high presence of DER . 13
4.7 Summary of FPI/DSU requirements with respect to fault detection according
to network operation mode and fault type . 13
5 Fault detecting principles according to network and fault type. 15
5.1 General . 15
5.2 Earth fault detection and neutral treatment. 18
5.2.1 General . 18
5.2.2 Earth fault detection in isolated neutral systems . 18
5.2.3 Earth fault detection in resonant earthed systems . 24
5.2.4 Overcurrent detection in absence or negligible presence of DER . 35
5.2.5 Overcurrent detection in presence of a large amount of DER
(significantly increasing short circuit current values) . 37
Annex A (informative) Example of a possible solution for fault detection through
FPIs/DSUs on closed loop feeder . 39
A.1 General . 39
A.2 Double bipole model . 39
A.3 Analysis of zero-sequence values in case of fault on a line out of the closed
loop . 40
A.4 Analysis in case of fault on the closed-loop . 42
A.5 Example of on-field application . 44
Annex B (informative) Example of fault detection coordination technique among
FPIs/DSUs and MV feeder protection relays . 45
B.1 Autonomous fault detection confirmation from FPIs/DSUs . 45
IEC 62689-2:2016 © IEC 2016 – 3 –
B.2 Fault detection confirmation from FPIs/DSUs through voltage
presence/absence detection . 48
Bibliography . 49
Figure 1 – General architecture of an FPI . 8
Figure 2 – General three-phase diagram of an earth fault in isolated neutral system . 16
Figure 3 – General three-phase diagram of an earth fault solidly earthed system
(example 2) . 17
Figure 4 – Isolated neutral system – detection of earth fault current direction from
FPI/DSU upstream from the fault location (fault downstream from the FPI’s/DSU’s
location) . 18
Figure 5 – Isolated neutral system – detection of earth fault current direction from
FPI/DSU downstream from the fault location (fault upstream from the FPI’s/DSU’s
location) . 19
Figure 6 – Isolated neutral system – vector diagrams related to Figure 4 and Figure 5 . 20
Figure 7 – Relationship between FPI/DSU regulated current threshold and earth fault
current in case of non-directional earth fault current detection. Fault downstream from
FPI/DSU A4-2 . 21
Figure 8 – Relationship between FPI/DSU regulated current threshold and earth fault
current in case of non-directional earth fault current detection. Fault downstream from
FPI/DSU A4-1 and upstream from FPI/DSU A4-2 . 22
Figure 9 – Relationship between FPI/DSU regulated current threshold and earth fault
current in case of non-directional earth fault current detection. Fault on MV busbar
(upstream from any FPI/DSU) . 23
Figure 10 – Pure resonant earthed system – detection of earth fault current direction
from FPI/DSU upstream from the fault location (fault downstream from the FPI’s/DSU’s
location) . 25
Figure 11 – Pure resonant earthed system – detection of earth fault current direction
from FPI/DSU downstream from the fault location (fault upstream from the FPI’s/DSU’s
location) . 25
Figure 12 – Pure resonant earthed
...
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