High-voltage direct current (HVDC) installations - System tests

IEC 61975:2010(E) applies to system tests for high-voltage direct current (HVDC) installations which consist of a sending terminal and a receiving terminal, each connected to an a.c. system. The tests specified in this standard are based on bidirectional and bipolar high-voltage direct current (HVDC) installations which consist of a sending terminal and a receiving terminal, each connected to an a.c. system. The test requirements and acceptance criteria should be agreed for back-to-back installations, while multi-terminal systems and voltage sourced converters are not included in this standard. For monopolar HVDC installations, the standard applies except for bipolar tests. This standard only serves as a guideline to system tests for high-voltage direct current (HVDC) installations. The standard gives potential users guidance, regarding how to plan commissioning activities. The tests described in the guide may not be applicable to all projects, but represent a range of possible tests which should be considered. This edition cancels and replaces IEC/PAS 61975 published jointly in 2004 by IEC and CIGRÉ. It constitutes a technical revision incorporating engineering experience.

Anlagen zur Hochspannungsgleichstromübertragung (HGÜ) - Systemprüfungen

Installations en courant continu à haute tension (CCHT) - Essais système

La CEI 61975:2010 s'applique aux essais systèmes pour les installations en courant continu à haute tension (CCHT) qui se composent d'une borne d'émission et d'une borne de réception, chacune reliée à un système à courant alternatif. Les essais spécifiés dans la présente norme sont basés sur des installations en courant continu à haute tension (CCHT) bidirectionnelles et bipolaires qui se composent d'une borne d'émission et d'une borne de réception, chacune reliée à un système à courant alternatif. Il convient que les exigences d'essai et les critères d'acceptation soient convenus pour les installations en opposition, alors que les systèmes à bornes multiples et les convertisseurs à source de tension ne sont pas inclus dans la présente norme. Pour les installations CCHT monopolaires, la norme s'applique, excepté pour les essais bipolaires. La présente norme sert uniquement de lignes directrices des essais systèmes pour les installations en courant continu à haute tension (CCHT). La norme fournit des recommandations aux utilisateurs potentiels quant à la manière de planifier les activités de mise en service. Les essais décrits dans le guide ne peuvent être applicables à l'ensemble des projets, mais représentent une partie des essais possibles qu'il convient de prendre en considération. Cette première version de la CEI 61975 annule et remplace la CEI/PAS 61975 qui a été publiée conjointement en 2004 par la CEI et le CIGRE, dont elle constitue une révision technique combinée à une expérience en ingénierie.

Visokonapetostne enosmerne inštalacije (HVDC) - Sistemski preskusi (IEC 61975:2010)

Ta mednarodni standard velja za sistemske preskuse za visokonapetostne enosmerne inštalacije (HVDC), ki so sestavljene iz terminala, kateri oddaja, in terminala, kateri sprejema, oba priključena na sistem izmenične napetosti. Preskusi, določeni v tem standardu, so osnovani na dvosmernih in bipolarnih visokonapetostnih enosmernih inštalacijah (HVDC), inštalacijah, ki so sestavljene iz terminala, ki oddaja in terminala, ki sprejema, oba priključena na sistem izmenične napetosti. Zahteve preskusa in merila sprejemljivosti za zaporedne inštalacije se morajo dogovoriti, medtem ko sistemi z več terminali in virnih pretvornikov napetosti niso zajeti v tem standardu. Standard velja za enopolne HVDC inštalacije, razen bipolarnih preskusov. Za posebne funkcije ali delovanja, ki so lastna določenim načrtom, je potrebno dodati nekatere dodatne preskusne postavke, v skladu z zahtevami tehničnih specifikacij. Ta standard služi samo kot vodilo sistemskim preskusom za visokonapetostne enosmerne inštalacije (HVDC). Standard podaja vodila potencialna uporabnikom glede tega, kako načrtovati dejavnosti začetka obratovanja. Preskusi, opisani v vodilu, lahko ne veljajo za vse projekte, vendar predstavljajo razpon možnih preskusov, ki jih je treba upoštevati. Zato po možnosti organizacija, udeležena v projektu, vzpostavi program posamezni preskusni program, osnovan na tem standardu, in v naprej dodeli odgovornosti za različne opravila/preskuse med udeleženimi organizacijami (npr. uporabnik, dobavitelj, proizvajalec, operater, kupec itd.) za vsak določen projekt.

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Standards Content (Sample)

Visokonapetostne enosmerne inštalacije (HVDC) - Sistemski preskusi (IEC
High-voltage direct current (HVDC) installations - System tests (IEC 61975:2010)
Anlagen zur Hochspannungsgleichstromübertragung (HGÜ) - Systemprüfungen (IEC
Installations en courant continu à haute tension (CCHT) - Essais système (CEI
Ta slovenski standard je istoveten z: EN 61975:2010
29.130.10 Visokonapetostne stikalne in High voltage switchgear and
krmilne naprave controlgear
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 61975
September 2010
ICS 29.130.10; 31.080.01
English version
High-voltage direct current (HVDC) installations -
System tests
(IEC 61975:2010)
Installations en courant continu  Anlagen zur
à haute tension (CCHT) - Hochspannungsgleichstromübertragung
Essais système (HGÜ) -
(CEI 61975:2010) Systemprüfungen
(IEC 61975:2010)
This European Standard was approved by CENELEC on 2010-09-01. 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 Central Secretariat 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 Central Secretariat 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 61975:2010 E
The text of document 22F/221/FDIS, future edition 1 of IEC 61975, prepared by SC 22F, Power
electronics for electrical transmission and distribution systems, of IEC TC 22, Power electronic systems
and equipment, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as
EN 61975 on 2010-09-01.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2011-06-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2013-09-01
Annex ZA has been added by CENELEC.
Endorsement notice
The text of the International Standard IEC 61975:2010 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/TR 60919-1 NOTE  Harmonized as CLC/TR 60919-1.
IEC 61000-4-3 NOTE  Harmonized as EN 61000-4-3.
IEC 61803 NOTE  Harmonized as EN 61803.
- 3 - EN 61975:2010
Annex ZA
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application 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  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
Publication Year Title EN/HD Year

IEC 60633 1998 Terminology for high-voltage direct current EN 60633 1999
(HVDC) transmission
IEC/TR 60919-2 2008 Performance of high-voltage direct current CLC/TR 60919-2 201X
(HVDC) systems with line-commutated
converters -
Part 2: Faults and switching
At draft stage.
IEC 61975 ®
Edition 1.0 2010-07
High-voltage direct current (HVDC) installations – System tests

ICS 29.130.10; 31.080.01 ISBN 978-2-88912-100-7
– 2 – 61975 © IEC:2010(E)
1 Scope.7
2 Normative references.7
3 Terms and definitions .7
3.1 Test classifications terms .7
3.2 Operation state terms .8
4 General .9
4.1 Purpose.9
4.2 Structure of the HVDC system .10
4.3 Structure of the control and protection system.11
4.4 Logical steps of system test.12
4.5 Structure of system test .13
4.6 Precondition for site test .13
5 Converter station test.16
5.1 General .16
5.2 Converter unit test .17
5.3 Energizing of reactive components.18
5.4 Changing the d.c. system configuration.19
5.5 Electromagnetic compatibility.20
5.6 Trip test.21
5.7 Open line test .22
5.8 Back-to-back test.24
5.9 Short circuit test .25
6 Transmission tests.26
6.1 Low power transmission tests .26
6.2 Operator control mode transfer .34
6.3 Changes of d.c. configuration .40
6.4 Main circuit equipment switching.43
6.5 Dynamic performance testing.47
6.6 AC and d.c. system staged faults .56
6.7 Loss of telecom, auxiliaries or redundant equipment .60
6.8 High power transmission tests .63
6.9 Acceptance tests .67
7 Trial operation .74
7.1 General .74
7.2 Purpose of test .74
7.3 Test precondition.74
7.4 Test procedure .74
7.5 Test acceptance criteria.75
8 System test plan and documentation .75
8.1 General .75
8.2 Plant documentation and operating manual.75
8.3 System study reports and technical specification.75
8.4 Inspection and test plan.76
8.5 System test program.76

61975 © IEC:2010(E) – 3 –
8.6 Test procedure for each test .77
8.7 Documentation of system test results.77
8.8 Deviation report .78
Bibliography .79

Figure 1 – Relation among five major aspects of system test .10
Figure 2 – Structure of the HVDC system .11
Figure 3 – Structure of the HVDC control and protection.11
Figure 4 – Structure of system test .15
Figure 5 – Sequence for low power transmission tests.28
Figure 6 – Step response test of current control at the rectifier .49
Figure 7 – Step response test of extinction angle control at the inverter .50
Figure 8 – Step response test of d.c. voltage control at the inverter .50
Figure 9 – Step response test of current control at the inverter .51
Figure 10 – Step response test of power control at the rectifier .51

– 4 – 61975 © IEC:2010(E)
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all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
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consensus of opinion on the relevant subjects since each technical committee has representation from all
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Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible f

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