GB/T 20996.3-2020Performance of high-voltage direct current (HVDC) systems with line-commutated converters - Part 3: Dynamic conditions (English PDF)

1 Scope

This part of GB/T 20996 gives comprehensive guidelines for the dynamic performance of HVDC systems: The dynamic performance in this section refers to its characteristic

The characteristic frequency or time zone covers events and phenomena ranging from transient conditions to steady-state conditions: The dynamic performance involved should belong to the steady state

Or under transient conditions, the high-voltage DC system at both ends and the connected AC system or its components, such as power plants, AC lines and buses, reactive power sources, etc:

The mutual influence between: It is assumed that the high-voltage DC system at both ends adopts a 12-pulse converter unit composed of three-phase bridge wiring (dual circuit),

It has two-way power transmission capability, and the converter uses a thyristor valve with gapless metal oxide arrester for insulation coordination as the bridge arm:

Diode converter valves are not considered in this section: Although there is no special mention for the multi-terminal HVDC transmission system, many contents in this section are also

Suitable for multi-terminal systems:

This section only involves power grid commutated converters, including converters with capacitor commutated circuit structures: IEC 60146-1-1, IEC TR60146-1-2

And IEC 60146-1-31) gives the general requirements for power grid commutated semiconductor converters, excluding voltage source converters:

1) IEC 60146-1-3 has been abolished and is covered by IEC 61378 series and IEC /IEEE60076-57-129:

2) The currently valid version IEC TR60919-1:2020:

GB/T 20996 consists of three parts: The first part is steady state, the second part is transient, and the third part is dynamic: When the user compiles both ends

In the specification of HVDC systems, all three parts should be considered:

For each component in the system, pay attention to the difference between system performance specifications and equipment design specifications: This part does not specify equipment regulations

Fan and test requirements, but focus on those technical requirements that affect system performance specifications: Different HVDC systems may have many differences

Similarities, this section does not discuss this in detail: This part should not be used directly as the technical specifications for specific engineering projects: However, this can be the basis

The basis is the preparation of technical specifications for the specific transmission system to meet the actual system requirements: The content involved in this section does not distinguish between users and manufacturers

Define job responsibilities:

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 60146-1-1 General requirements for semiconductor converters and grid-commutated converters Part 1-1: Basic requirements specification (Semi- conductorconverters-Generalrequirementsandlinecommutatedconverters-Part 1-1:Specification ofbasicrequirements)

IEC /T R60146-1-2 General requirements for semiconductor converters and grid-commutated converters Part 1-2: Application guidelines (Semi- conductorconverters-Generalrequirementsandlinecommutatedconverters-Part 1-2:Application guidelines)

IEC 60146-1-3 General requirements for semiconductor converters and grid-commutated converters Part 1-3: Transformers and reactors (Semiconductorconverters-Generalrequirementsandlinecommutatedconverters-Part 1-3:Trans- formersandreactors)

IEC TR60919-1:20102) Performance of HVDC systems using grid-commutated converters Part 1: Steady state (Per- formanceofhigh-voltagedirectcurrent(HVDC)systemswithline-commutatedconverters-Part 1:

GB/T 37404 | GB/T 31487.3 | GB/T 3859.1 | GB/T 20995 | GB/T 20990.1 | GB/T 20996.2 | […]