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GB/T 36995-2018Wind turbines—Test procedure of voltage fault ride through capability (English PDF)

风力发电机组故障电压穿越能力测试规程

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

December 28, 2018

Implementation date

July 1, 2019

Scope

GB/T 36995-2018 is the English-translated version of 风力发电机组故障电压穿越能力测试规程.

GB/T 36995-2018 sets out how to test whether a grid-connected wind turbine can ride through a voltage fault, that is, stay connected and keep running when a grid fault or disturbance makes the voltage drop or rise.

It defines low and high voltage ride-through capability, the fault voltage generating device, the test point, the active power recovery time and the voltage dip, and lists the symbols used.

It then covers the technical requirements for fault voltage ride-through, the test conditions, the test content, the test requirements, the test procedure and what the test report must contain.

Informative annexes deal with successive voltage faults, the measurement of active power, reactive power and voltage, a sample report format and the calculation of reactive current injection. It was issued on 28 December 2018 and has applied since 1 July 2019.

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Document preview — GB/T 36995-2018

National Standard of the People's Republic of China

ICS: 27.180
Classification: F 11

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references
3 Terms and Definitions
4 symbol
5 fault voltage ride through technical requirements
6 Test conditions
7 Test content
8 test requirements
9 test procedure
10 Test report content
Appendix A (informative) Voltage chain fault crossing test requirements and test content
Appendix B (informative) Active power, reactive power and voltage measurement
Appendix C (informative) Sample format report
Appendix D (informative) Determination and calculation method of reactive current injection
Reference

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

1 Scope

This standard specifies the technical requirements, test conditions, and test conditions for the fault voltage ride-through capability of wind turbines (hereinafter referred to as wind turbines). Content, test requirements, test procedures and test report content.

This standard applies to grid-connected wind turbines.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest edition (including all amendments) applies to this document.

JJF1059.1 Measurement Uncertainty Evaluation and Representation

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 Wind turbine low voltage ride through capability

When the power grid fails or the disturbance causes a voltage drop, the wind turbine ensures that it does not fall off the network within a certain voltage drop range and time interval. The ability to continue running.

3.2 Wind turbine high voltage ride through capability

When the grid fault or disturbance causes the voltage to rise, within a certain range of voltage rise and time interval, the wind turbine guarantees that there is no off-grid The ability to continue running.

3.3 Fault voltage generating device

Based on the impedance/resistance-capacitor voltage division principle, test equipment that meets the test requirements for fault voltage specifications is generated at the test point.

3.4 Grid point/test point

The point at which the fault voltage is generated is the connection point between the fault voltage generating device and the high voltage side of the step-up transformer of the wind turbine.

3.5 Active power recovery time

From the recovery of the grid voltage to the normal range, to the wind turbine output active power is restored to the actual wind condition corresponding to the output power required time.

3.6 Voltage drop

The effective value of the voltage at a certain point in the power system is temporarily reduced to less than 0.9 pu of the nominal voltage of the system, and returns to normal after a short duration. A phenomenon near the value.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 20 pages — is available in the English PDF.

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