EN 62823:2015/A1:2020

Thyristor valves for thyristor controlled series capacitors (TCSC) - Electrical testing

DAV on 2020-02-28.

Thyristorventile für thyristorgesteuerte Reihenkondensatoren (TCSC) - Elektrische Prüfung

Valves à thyristors pour condensateurs série commandés par thyristors (CSCT) - Essai électrique

Tiristorski ventili za tiristorsko upravljane zaporedne kondenzatorje (TCSC) - Električno preskušanje (IEC 62823:2015/A1:2019)

General Information

• Status: Published
• Publication Date: 05-Mar-2020
• Withdrawal Date: 07-Jan-2023
• ICS: 29.240.99 - Other equipment related to power transmission and distribution networks
• Technical Committee: CLC/TC 22X - Power electronics
• Drafting Committee: IEC/SC 22F - IEC_SC_22F
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 06-Mar-2020
• Completion Date: 06-Mar-2020
• Ref Project: SIST EN 62823:2016/A1:2020 - Thyristor valves for thyristor controlled series capacitors (TCSC) - Electrical testing (IEC 62823:2015/A1:2019)

Relations

• Refers: EN IEC 60071-1:2019 - Insulation co-ordination - Part 1: Definitions, principles and rules
• Effective Date: 03-Feb-2026
• Refers: EN 60060-1:2010 - High-voltage test techniques - Part 1: General definitions and test requirements
• Effective Date: 03-Feb-2026
• Refers: EN IEC 60270:2025 - High-voltage test techniques - Charge-based measurement of partial discharges
• Effective Date: 03-Feb-2026
• Refers: EN IEC 60071-2:2023 - Insulation co-ordination - Part 2: Application guidelines
• Effective Date: 03-Feb-2026
• Referred By: EN IEC 60143-4:2024 - Series capacitors for power systems - Part 4: Thyristor controlled series capacitors
• Effective Date: 03-Feb-2026
• Amends: EN 62823:2015 - Thyristor valves for thyristor controlled series capacitors (TCSC) - Electrical testing
• Effective Date: 23-Jan-2023

Overview

EN 62823:2015/A1:2020 is a European Standard developed by CENELEC (CLC) that specifies the requirements for electrical testing of thyristor valves used in thyristor controlled series capacitors (TCSC) within power electronic systems. This standard is aligned with IEC 62823:2015/A1:2019 and is crucial for ensuring the reliability, safety, and optimal performance of TCSC equipment in electrical transmission and distribution networks.

Thyristor controlled series capacitors play an essential role in modern power systems, enhancing the stability, control, and efficiency of high-voltage transmission lines. The amendment A1:2020 introduces updates and clarifications to the original 2015 edition, supporting technical consistency and interoperability across Europe.

Key Topics

• Electrical Testing Procedures: Guidance on the required electrical tests for thyristor valves, ensuring they perform reliably under normal and fault conditions.
• Test Values and Waveshapes: Defines standard values and waveforms for testing, ensuring consistent and repeatable results across different installations.
• Impulse Tests: Includes specific protocols for lightning and switching impulse voltage tests in line with international standards (e.g., IEC 60060-1).
• Operational Modes: Clarifies definitions and requirements for different TCSC operation modes, such as capacitive boost and current bypass modes.
• Electromagnetic Disturbance: Specifies type tests for verifying valve insensitivity to electromagnetic interference, a key aspect for stable operation in high-voltage environments.
• Component Specifications: Details on characteristics, such as TCSC valve and LC branch parameters (inductance, capacitance, impedance), important for manufacturers and operators.

Applications

EN 62823:2015/A1:2020 is highly relevant for:

• Manufacturers of Power Electronic Equipment: Ensures thyristor valves meet the necessary electrical performance and safety criteria for TCSC applications.
• Utility Companies & Grid Operators: Provides a basis for equipment procurement and acceptance testing of TCSC installations, supporting grid stability and power flow management.
• Testing Laboratories: Establishes protocols for conducting type and routine tests on thyristor valves, promoting accuracy and comparability across results.
• System Integrators: Helps in the design and validation of integrated FACTS (Flexible AC Transmission Systems) solutions by ensuring compliant component performance.

By adhering to this standard, stakeholders can ensure that TCSC thyristor valves are capable of withstanding operational stresses, electrical disturbances, and environmental influences throughout their lifecycle.

Related Standards

For comprehensive compliance and integration within broader power system applications, consider the following related standards:

• IEC 60060-1 - High voltage test techniques
• IEC 60071-1 - Insulation coordination - Definitions, principles, and rules
• IEC 60700 series - Thyristor valves for high voltage direct current (HVDC) power transmission
• IEC 62271 series - High-voltage switchgear and controlgear
• EN 61803 - Determination of power losses in high-voltage direct current (HVDC) converter stations

These standards, in conjunction with EN 62823:2015/A1:2020, provide a robust framework for the design, testing, and operation of advanced power electronic systems widely used in modern electrical transmission networks. Ensuring compliance enhances system reliability, safety, and interoperability across the European energy sector.

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2020
Tiristorski ventili za tiristorsko upravljane zaporedne kondenzatorje (TCSC) -
Električno preskušanje (IEC 62823:2015/A1:2019)
Thyristor valves for thyristor controlled series capacitors (TCSC) - Electrical testing (IEC
62823:2015/A1:2019)
Thyristorventile für thyristorgesteuerte Reihenkondensatoren (TCSC) - Elektrische
Prüfung (IEC 62823:2015/A1:2019)
Valves à thyristors pour condensateurs série commandés par thyristors (CSCT) - Essai
électrique (IEC 62823:2015/A1:2019)
Ta slovenski standard je istoveten z: EN 62823:2015/A1:2020
ICS:
17.220.20 Merjenje električnih in Measurement of electrical
magnetnih veličin and magnetic quantities
31.080.20 Tiristorji Thyristors
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 62823:2015/A1

NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2020
ICS 29.240.99
English Version
Thyristor valves for thyristor controlled series capacitors (TCSC)
- Electrical testing
(IEC 62823:2015/A1:2019)
Valves à thyristors pour condensateurs série commandés Thyristorventile für thyristorgesteuerte
par thyristors (CSCT) - Essai électrique Reihenkondensatoren (TCSC) - Elektrische Prüfung
(IEC 62823:2015/A1:2019) (IEC 62823:2015/A1:2019)
This amendment A1 modifies the European Standard EN 62823:2015; it was approved by CENELEC on 2020-01-08. CENELEC members
are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this amendment 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 amendment 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, 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
© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 62823:2015/A1:2020 E

European foreword
The text of document 22F/518/CDV, future IEC 62823/A1, 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 approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2020-10-08
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2023-01-08
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 62823:2015/A1:2019 was approved by CENELEC as a
European Standard without any modification.

IEC 62823 ®
Edition 1.0 2019-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
A MENDMENT 1
AM ENDEMENT 1
Thyristor valves for thyristor controlled series capacitors (TCSC) – Electrical

testing
Valves à thyristors pour condensateurs série commandés par thyristors

(CSCT) – Essai électrique
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.240.99 ISBN 978-2-8322-7599-3

– 2 – IEC 62823:2015/AMD1:2019
© IEC 2019
FOREWORD
This amendment has been prepared by subcommittee 22F: Power electronics for electrical
transmission and distribution systems, of IEC technical committee 22: Power electronic systems
and equipment.
The text of this amendment is based on the following documents:
CDV Report on voting
22F/518/CDV 22F/532/RVC
Full information on the voting for the approval of this amendment can be found in the report on
voting indicated in the above table.
The committee has decided that the contents of this amendment and the base publication will
remain unchanged until the stability date indicated on the IEC website under
"http://webstore.iec.ch" in the data related to the specific publication. At this date, the
publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
_____________
3.23
boost factor
Replace the words "divided by" by the word "and".

Figure 2 – TCSC subsegment
Replace the existing Figure 2 by the following new figure:

IEC 62823:2015/AMD1:2019 – 3 –
© IEC 2019
NOTE Valve arrester is optional.
Figure 2 – TCSC subsegment
Figure 4 – Thyristor valve voltage in a TCSC
Replace the existing Figure 4 by the following new figure:

– 4 – IEC 62823:2015/AMD1:2019
© IEC 2019
Figure 4 – Thyristor valve voltage in a TCSC
4.2.3.1 Capacitive boost operation mode
Replace the existing text by the following new text:
In TCSC capacitive boost operation mode, the TCSC valve current follows the formulation below:
λI⋅
 
n L_peak cosβ
i =−1 ⋅ ⋅ cos(ωt⋅−) ⋅cos(λ⋅ωt⋅ ) , n⋅π − β ≤ (ω ⋅t) ≤ n⋅π + β
( )
 
v N N N
cos(λβ⋅ )
λ −1
 
i = 0 n⋅π + β < (ω ⋅t) < (n + 1)⋅π
...