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GB/T 44681-2024Wind energy generation systems - Technical specification for the post-evaluation and retrofitting of wind farms (English PDF)

风能发电系统风力发电场后评价及改造技术规范

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

September 29, 2024

Implementation date

April 1, 2025

Scope

GB/T 44681-2024 is the English-translated version of 风能发电系统风力发电场后评价及改造技术规范.

GB/T 44681-2024 is the Chinese standard "Wind energy generation systems - Technical specification for the post-evaluation and retrofitting of wind farms".

Its scope clause reads: This document specifies the relevant technical contents of post-evaluation and transformation of wind farms (hereinafter referred to as "wind farms"), including the Assessment requirements, post-design evaluation of wind farms, post-operation evaluation of wind farms, and wind farm transformation technologies that can optimize power generation and improve reliability Technical requirements and evaluation.

This document applies to post-evaluation of onshore wind farms that have been put into operation and have generated operating data, as well as technologies for optimizing power generation and improving reliability.

Transformation design evaluation shall be implemented as a reference for offshore wind farms. Its clauses include terms and definitions.

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Document preview — GB/T 44681-2024

National Standard of the People's Republic of China

ICS: 27.180
Classification: F11

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

Preface
Introduction
1 Scope
2 Normative references
3 Terms and Definitions
4 Abbreviations
5 Evaluation Requirements
5.1 General
5.2 Data Integrity
5.3 Data Normalization
5.4 Data Classification
6 Post-design evaluation of wind farms
6.1 General
6.2 Representativeness of wind towers
6.3 Unit selection and configuration
6.4 Terrain
6.5 Wind Resources
6.6 Power Generation Deviation
6.7 Economical
7 Post-operation evaluation of wind farms
7.1 General
7.2 Power Generation Performance
7.3 Availability
7.4 Reliability
7.5 Security
7.6 Grid-connected operation
7.7 Economic efficiency
8 Wind farm transformation technology
8.1 General
8.2 Optimization Class
8.3 Components installation and replacement
8.4 Whole machine replacement
8.5 Other categories
9 Wind farm transformation evaluation
9.1 Overview
9.2 Transformation Effect
9.3 Security
9.4 Economic efficiency
10 Reporting requirements
Appendix A (Informative) Data Collection Checklist
Appendix B (Normative) Wind speed normalization
Appendix C (Informative) Empirical method for solving cabin transfer function
Appendix D (Informative) Unit power generation performance related parameters and typical abnormal state evaluation

1 Scope

This document specifies the relevant technical contents of post-evaluation and transformation of wind farms (hereinafter referred to as "wind farms"), including the

Assessment requirements, post-design evaluation of wind farms, post-operation evaluation of wind farms, and wind farm transformation technologies that can optimize power generation and improve reliability

Technical requirements and evaluation.

Transformation design evaluation shall be implemented as a reference for offshore wind farms.

2 Normative references

The contents of the following documents constitute essential clauses of this document through normative references in this document.

For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to

This document.

GB/T 5226.1 Electrical safety of machinery Electrical equipment of machinery Part 1.General technical requirements

GB/T 15969.1 Programmable controllers Part 1.General information

GB/T 15969.2 Programmable controllers Part 2.Equipment requirements and tests

GB/T 18451.1 Design requirements for wind turbines

GB/T 18451.2-2021 Wind turbine power characteristics test

GB/T 19963.1 Technical regulations for connecting wind farms to power systems Part 1.Onshore wind power

GB/T 33225 Power characteristics test of wind turbine generator system based on nacelle anemometer method

GB/T 37523-2019 Technical specification for review, interpolation and correction of meteorological observation data for wind farms

DL/T 1870 Technical Specification for Power System Network Source Coordination

NB/T 10103-2018 Technical specification for micro-site selection of wind farm projects

NB/T 10205 Technical regulations for wind power forecasting

NB/T 10590 Technical specification for lightning protection of wind farm collector lines in areas prone to lightning

NB/T 10909 Wind energy resource analysis and power generation calculation method in micro-site selection

NB/T 31046 Wind power prediction system functional specification

NB/T 31078 Wind farm grid-connected performance evaluation method

NB/T 31085 Specification for economic evaluation of wind farm projects

3 Terms and definitions

The following terms and definitions apply to this document.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 35 pages — is available in the English PDF.

Referenced standards

Normative references

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