CLC/TS 50654-1:2018

HVDC Grid Systems and connected Converter Stations - Guideline and Parameter Lists for Functional Specifications - Part 1: Guidelines

1.1 General These Guidelines and Parameter Lists to Functional Specifications describe specific functional requirements for HVDC Grid Systems. The terminology "HVDC Grid Systems" is used here describing HVDC systems for power transmission having more than two converter stations connected to a common d.c. circuit. While this document focuses on requirements, that are specific for HVDC Grid Systems, some requirements are considered applicable to all HVDC systems in general, i.e. including point-to-point HVDC systems. Existing IEC, Cigré or other documents relevant have been used for reference as far as possible. Corresponding to electric power transmission applications, this document is applicable to high voltage systems, i.e. .only nominal d.c. voltages equal or higher than 50 kV with respect to earth are considered in this document. NOTE While the physical principles of d.c. networks are basically voltage independent, the technical options for designing equipment get much wider with lower d.c. voltage levels, e.g. in case of converters or switchgear. Both parts have the same outline and headlines to aid the reader. 1.2 About the Present Release The present release of the Guidelines and Parameter Lists for Functional Specifications describes technical guidelines and specifications for HVDC Grid Systems which are characterized by having exactly one single connection between two converter stations, often referred to as radial systems. When developing the requirements for radial systems, care is taken not to build up potential show-stoppers for meshed systems. Meshed HVDC Grid Systems can be included into this specification at a later point in time. The Guidelines and Parameter List to the Functional Specification of HVDC Grid Systems cover technical aspects of - Coordination of HVDC Grid and a.c. Systems - HVDC Grid System Characteristics - HVDC Grid System Control - HVDC Grid System Protection - Models and Validation - Beyond the present scope, the following aspects are proposed for future work: - AC/DC converter stations - HVDC Grid System Equipment - HVDC Grid System Integration Tests

Hochspannungsgleichstrom-Netzsysteme - Leitfaden und Parameter-Listen für funktionale Spezifikationen - Teil 1: Leitfaden

Réseaux CCHT et stations de conversion connectées - Lignes directrices et listes de paramètres pour les spécifications fonctionnelles - Partie 1: Lignes directrices

Sistemi visokonapetostnega enosmernega omrežja in priključene pretvorniške postaje - Smernice in seznam parametrov za funkcijsko specifikacijo - 1. del: Smernice

Te smernice za funkcionalne specifikacije opisujejo določene funkcionalne zahteve za sisteme omrežja HVDC. Terminologija »sistemi omrežja HVDC« se tu uporablja za opis sistemov HVDC za prenos električne energije, ki imajo več kot dve pretvorniški postaji priključeni na običajen enosmerni tokokrog.
Čeprav se ta dokument osredotoča na zahteve, ki so značilne za sisteme omrežja HVDC, nekatere zahteve veljajo za vse sisteme HVDC na splošno, vključno s sistemi HVDC od točke do točke. Kot referenca so bili po možnosti uporabljeni obstoječe specifikacije, dokumenti Cigré ali drugi ustrezni dokumenti.
Ustrezno z aplikacijami prenosa električne energije se ta dokument uporablja za visokonapetostne sisteme, torej so v tem dokumentu upoštevane zgolj nazivne enosmerne napetosti, ki so enake ali višje od 50 kV glede na zemljo.
Opomba: Čeprav so po fizikalnih načelih omrežja enosmernega toka načeloma neodvisna od napetosti, so tehnične možnosti oblikovanja opreme večje pri nizkih ravneh napetosti enosmernega toka, npr. pri pretvornikih ali stikalnih napravah.
Ta 1. del bo treba prebrati v povezavi z 2. delom »Seznama parametrov«, za katere se vzporedno zažene predlog za nove delovne postavke.

General Information

• Status: Withdrawn
• Publication Date: 15-Mar-2018
• ICS: 29.240.01 - Power transmission and distribution networks in general
• Technical Committee: CLC/TC 8X - System aspects of electrical energy supply
• Drafting Committee: CLC/TC 8X - System aspects of electrical energy supply
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 19-Jun-2020
• Completion Date: 14-Apr-2025
• Ref Project: SIST-TS CLC/TS 50654-1:2018 - HVDC Grid Systems and connected Converter Stations - Guideline and Parameter Lists for Functional Specifications - Part 1: Guidelines

Relations

• Replaced By: CLC/TS 50654-1:2020 - HVDC Grid Systems and connected Converter Stations - Guideline and Parameter Lists for Functional Specifications - Part 1: Guidelines
• Effective Date: 07-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2018
6LVWHPLYLVRNRQDSHWRVWQHJDHQRVPHUQHJDRPUHåMDLQSULNOMXþHQHSUHWYRUQLãNH
SRVWDMH6PHUQLFHLQVH]QDPSDUDPHWURY]DIXQNFLMVNRVSHFLILNDFLMRGHO
6PHUQLFH
HVDC Grid Systems and connected Converter Stations - Guideline and Parameter Lists
for Functional Specifications - Part 1: Guidelines
Ta slovenski standard je istoveten z: CLC/TS 50654-1:2018
ICS:
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.

TECHNICAL SPECIFICATION CLC/TS 50654-1

SPÉCIFICATION TECHNIQUE
TECHNISCHE SPEZIFIKATION
March 2018
ICS 29.240.01
English Version
HVDC Grid Systems and connected Converter Stations -
Guideline and Parameter Lists for Functional Specifications -
Part 1: Guidelines
Réseaux CCHT et stations de conversion connectées - Hochspannungsgleichstrom-Netzsysteme - Leitfaden und
Lignes directrices et listes de paramètres pour les Parameter-Listen für funktionale Spezifikationen - Teil 1:
spécifications fonctionnelles - Partie 1: Lignes directrices Leitfaden
This Technical Specification was approved by CENELEC on 2018-01-22.

CENELEC members are required to announce the existence of this TS in the same way as for an EN and to make the TS available promptly
at national level in an appropriate form. It is permissible to keep conflicting national standards in force.

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
© 2018 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. CLC/TS 50654-1:2018 E

Contents Page
European foreword . 5
Introduction . 6
1 Scope . 7
1.1 General . 7
1.2 About the Present Release . 7
2 Normative references . 7
3 Terms, definitions and abbreviations . 8
3.1 Terms and definitions . 8
3.2 Abbreviations . 10
4 Coordination of HVDC Grid System and AC Systems . 10
4.1 Purpose of the HVDC Grid System and Power Network Diagram . 10
4.2 Hybrid AC/DC Power Flow Optimization . 11
4.3 Basic Operation Functions – Converter Normal Operation State . 12
4.3.1 General . 12
4.3.2 AC System Frequency by a Frequency / Power Droop . 12
4.3.3 DC Voltage / DC Power Droop . 13
4.4 Basic Operation Functions – Converter Abnormal Operation State . 14
4.4.1 General . 14
4.4.2 Network Conditions and Power Flow Requirements . 14
4.4.3 Abnormal AC Voltage Conditions . 14
4.5 Ancillary Services . 15
4.5.1 General . 15
4.5.2 Frequency Control Related Services . 15
4.5.3 AC Voltage Control Related Services . 17
4.5.4 Power Oscillation Damping Services . 18
4.5.5 System Restoration Services . 18
5 HVDC Grid System Characteristics . 18
5.1 HVDC Circuit Topologies . 18
5.1.1 Basic Characteristics and Nomenclature . 18
5.1.2 Attributes of HVDC Grid Systems or HVDC Grid Sub-Systems . 23
5.1.3 Attributes of a Converter Station . 24
5.2 Grid Operating States . 25
5.2.1 Normal State . 25
5.2.2 Alert State . 25
5.2.3 Emergency State . 25
5.2.4 Blackout State . 25
5.2.5 Restoration . 25
5.3 DC Voltages . 26
5.3.1 General . 26
5.3.2 Nominal DC System Voltage . 26
5.3.3 Steady-State DC Voltage . 26
5.3.4 Temporary DC Voltage . 26
5.4 Insulation Coordination . 28
5.5 Short-Circuit Characteristics . 28
5.5.1 General Remarks . 28
5.5.2 Calculation of Short-Circuit Currents in HVDC Grid Systems . 28
5.5.3 Short Circuit Current Design Requirements . 29
5.6 Steady-State Voltage and Current Distortions . 29
6 HVDC Grid System Control . 30
6.1 Closed-Loop Control Functions . 30
6.1.1 General . 30
6.1.2 Core Control Functions . 30
6.1.3 Coordinating Control Functions . 30
6.2 Controller Hierarchy . 30
6.2.1 General . 30
6.2.2 Internal Converter Control . 31
6.2.3 DC Node Voltage Control . 32
6.2.4 Coordinated System Control . 33
6.2.5 AC/DC Grid Control . 35
6.3 Propagation of Information . 36
6.4 Open-Loop Controls . 37
6.4.1 Operating Sequences for Grid Installations . 37
6.4.2 Operating Sequences for the Return Path . 38
6.4.3 Recovery . 38
7 HVDC Grid System Protection . 39
7.1 General . 39
7.2 DC Fault Separation . 40
7.3 Protection System Related Installations and Equipment . 40
7.3.1 AC/DC Converter Station . 40
7.3.2 HVDC Grid System Topology and Equipment . 41
7.4 HVDC Grid System Protection Zones . 41
7.4.1 General . 41
7.4.2 Permanent Stop P . 43
7.4.3 Permanent Stop PQ . 45
7.4.4 Temporary Stop P . 46
7.4.5 Temporary Stop PQ . 48
7.4.6 Continued Operation . 48
7.4.7 Example of a Protection Zone Matrix . 50
7.5 DC Protection . 51
7.5.1 General . 51
7.5.2 DC Converter Protections . 52
7.5
...