GB/Z 20996.2-2007
Performance of high-voltage direct current (HVDC) systems.Part 2:Faults and switching (English Version)
- Standard No.
- GB/Z 20996.2-2007
- Language
- Chinese, Available in English version
- Release Date
- 2007
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Status
- 2021-07
- Replace By
- GB/T 20996.2-2020
- Latest
- GB/T 20996.2-2020
- Scope
- This part of GB/Z 20996 is a guiding technical document on the transient performance and fault protection requirements of HVDC systems. The fault and operation transient performance of the two-terminal HVDC system composed of three-phase bridge (two-circuit) connected 12-pulse (dynamic) converter units are discussed. Multi-terminal HVDC systems are not covered, but parallel converters and parallel lines involved in two-terminal systems are discussed. It is assumed that the converter uses a thyristor valve as a bridge arm, a gapless metal oxide arrester is used for insulation coordination, and power can be transmitted bidirectionally. This section does not consider diode valves. GB/Z 20996 consists of three parts. Part 1 Steady State, Part 2 Faults and Operation, Part 3 Dynamics. In the process of formulating and writing, the repetition of the three parts has been avoided as far as possible. Therefore, when the user prepares to compile the specifications of the two-terminal HVDC system, he should refer to all the contents of the three parts. For each component in the system, attention should be paid to the difference between the system performance specification and the equipment design specification. This section does not specify equipment technical conditions and test requirements, but focuses on those technical requirements that affect system performance. This section also does not include detailed seismic performance requirements. In addition, different HVDC systems may have many differences, which are not discussed in detail in this section. Therefore, this section should not be directly used as a technical specification for a specific engineering project. However, it can be used as a basis to compile technical specifications that meet the actual system requirements for a specific power transmission system. The content involved in this section does not distinguish the responsibilities of users and manufacturers.
GB/Z 20996.2-2007 Referenced Document
- GB 311.1-1997 Insulation co-ordination for high voltage transmission and distribution equipment
- GB/T 13498 Terminology for high-voltage direct current(HVDC) transmission*， 2017-12-29 Update
- GB/T 20990.1 Thyristor valves for high voltage direct current (HVDC)power transmission—Part1: Electrical testing*， 2020-12-14 Update
- GB/T 3859.1 Semiconductor converters.General requirements and line commutated converters.Part 1-1:Specification of basic requirements*， 2013-07-19 Update
- GB/T 3859.2 Semiconductor converters.General requirements and line commutated converters.Part 1-2:Application guide*， 2013-07-19 Update
- GB/T 3859.3 Semiconductor converters.General requirements and line commutated converters.Part 1-3:Transformers and reactors*， 2013-07-19 Update
- GB/T 3859.4 Semiconductor converter-Self-commutated semiconductor converters including direct d.c.converters
- GB/Z 20996.1-2007 Performance of high-voltage direct current (HVDC) systems.Part 1:Steady-state conditions
- GB/Z 20996.3-2007 Performance of high-voltage direct current (HVDC) systems Part 3: Dynamic conditions
GB/Z 20996.2-2007 history
- 2020 GB/T 20996.2-2020 Performance of high-voltage direct current (HVDC) systems with line-commutated converters—Part 2: Faults and switching
- 2007 GB/Z 20996.2-2007 Performance of high-voltage direct current (HVDC) systems.Part 2:Faults and switching
GB/Z 20996.2-2007 Performance of high-voltage direct current (HVDC) systems.Part 2:Faults and switching was changed to GB/T 20996.2-2020 Performance of high-voltage direct current (HVDC) systems with line-commutated converters—Part 2: Faults and switching.