GB/T 20996.1-2020Performance of high-voltage direct current (HVDC) systems with line-commutated converters - Part 1: Steady-state conditions (English PDF)
采用电网换相换流器的高压直流系统的性能 第1部分：稳态
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Issued by
State Administration for Market Regulation, China National Standardization Administration
Level / Type
National · Recommended
Issue date
December 14, 2020
Implementation date
July 1, 2021
Scope
GB/T 20996.1-2020 is the English-translated version of 采用电网换相换流器的高压直流系统的性能 第1部分：稳态.
GB/T 20996.1-2020 is the Chinese standard "Performance of high-voltage direct current (HVDC) systems with line-commutated converters - Part 1: Steady-state conditions".
Its scope clause reads: This part of GB/T 20996 gives comprehensive guidelines for the steady-state performance of high-voltage DC systems, involving the use of three-phase bridge (dual-circuit) connections The steady-state performance of the two-terminal HVDC system that constitutes a 12-pulse (dynamic) converter unit (see Figure 1), but does not include the multi-terminal HVDC transmission system System: The converter stations at both ends consider the use of thyristor valves as semiconductor converter valves, which have two-way power transmission capabilities: Two poles are not considered in this section.
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Document preview — GB/T 20996.1-2020
National Standard of the People's Republic of China
- ICS
- 29.200; 29.240.99
- Classification
- K 46
- Replacing
- GB/Z 20996.1-2007
Issued by: State Administration for Market Regulation, China National Standardization Administration
Contents
- Preface
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Types of HVDC systems
- 5 Environmental information
- 6 Rated power, rated current and rated voltage
- 7 Overload and equipment capacity
- 8 Minimum transmission power and no-load standby state
- 9 AC system
- 10 Reactive power
- 11 HVDC transmission lines, grounding electrode lines and grounding electrodes
- 12 Reliability
- 13 HVDC control
- 14 Telecontrol communication
- 15 Auxiliary power supply
- 16 Audible noise
1 Scope
This part of GB/T 20996 gives comprehensive guidelines for the steady-state performance of high-voltage DC systems, involving the use of three-phase bridge (dual-circuit) connections
The steady-state performance of the two-terminal HVDC system that constitutes a 12-pulse (dynamic) converter unit (see Figure 1), but does not include the multi-terminal HVDC transmission system
System: The converter stations at both ends consider the use of thyristor valves as semiconductor converter valves, which have two-way power transmission capabilities: Two poles are not considered in this section
Pipe valve:
Description:
1---The winding on the valve side of the transformer:
Figure 1 12-pulse (dynamic) converter unit
This section only covers power grid commutated converters, including converters with capacitor commutated circuit structures: In IEC 60146-1-1,
IEC TR60146-1-2 and IEC 60146-1-31) give general aspects of grid-commutated semiconductor converters: This section does not consider voltage
Source inverter:
There is a difference between the system performance specifications and the equipment design specifications of the individual components in the system: This part does not specify equipment specifications and tests
Requirements, also did not include detailed seismic performance requirements: In addition, different HVDC systems may have many differences: This section does not
Consider these details: Therefore, this section should not be used directly as the technical specifications for specific engineering projects: However, it can be used as a specific
The transmission system compiles technical specifications that meet the actual system requirements:
This section covers steady-state performance, IEC TR60919-2 faults and operations, and IEC TR60919-3 dynamic performance: There are separate documents:
Pieces: When compiling the specifications for the two-terminal HVDC system, the three parts are considered together:
2 Normative references
The following documents are indispensable for the application of this document: For dated reference documents, only the dated version applies to this article
Pieces: For undated references, the latest version (including all amendments) applies to this document:
IEC 60633 High-voltage direct current (HVDC) transmission-Vocabulary]
1) IEC 60146-1-3 has been abolished and is covered by IEC 61378 series and IEC /IEEE60076-57-129:
GB/T 37404 | GB/T 31487.3 | GB/T 3859.1 | GB/T 20995 | GB/T 20990.1 | GB/T 20996.3 | […]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 125 pages — is available in the English PDF.
Referenced standards
Normative references
IEC 60633 · IEC 60146 · IEC 61378
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Related Standards
GB/T 20996.2-2020 — Performance of high-voltage direct current (HVDC) systems with line-commutated converters - Part 2: Faults and switching
GB/T 20996.3-2020 — Performance of high-voltage direct current (HVDC) systems with line-commutated converters - Part 3: Dynamic conditions
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