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GB/T 44659.1-2024 English PDF

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GB/T 44659.1-2024: Short-circuit current calculation of renewable energy power generation stations and connection systems - Part 1: Wind power generation
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GB/T 44659.1-2024English669 Add to Cart 5 days [Need to translate] Short-circuit current calculation of renewable energy power generation stations and connection systems - Part 1: Wind power generation Valid GB/T 44659.1-2024

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Basic data

Standard ID GB/T 44659.1-2024 (GB/T44659.1-2024)
Description (Translated English) Short-circuit current calculation of renewable energy power generation stations and connection systems - Part 1: Wind power generation
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard F20
Classification of International Standard 29.240.20
Word Count Estimation 33,341
Date of Issue 2024-10-26
Date of Implementation 2025-05-01
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB/T 44659.1-2024: Short-circuit current calculation of renewable energy power generation stations and connection systems - Part 1: Wind power generation


---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT44659.1-2024
ICS 29.240.20 CCSF20 National Standard of the People's Republic of China Short-circuit current calculation of new energy stations and access systems Part 1.Wind power generation Released on October 26, 2024 Implementation on May 1, 2025 State Administration for Market Regulation The National Standardization Administration issued

Table of Contents

Preface III Introduction IV 1 Scope 1 2 Normative references 1 3 Terms, definitions and symbols 1 3.1 Terms and Definitions 1 3.2 Symbol 1 4 General Requirements 2 5 Computational Model 3 5.1 General requirements 3 5.2 Doubly-fed wind turbines 3 5.3 Full power inverter wind turbine 5 5.4 Squirrel Cage Wind Turbine 6 5.5 Static VAR Generator 6 5.6 Wind farm equivalent model 7 5.7 Power system with multiple wind farms connected 7 6 Calculation Method 8 6.1 Balanced Short Circuit 8 6.2 Unbalanced Short Circuit 9 6.3 Calculation Example 11 Appendix A (Informative) Controlled Current Source Model Iterative Solution Process 12 Appendix B (Informative) Example 13 Preface This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting. This document is Part 1 of GB/T 44659 "Calculation of short-circuit current of new energy stations and access systems". GB/T 44659 has been published. The following parts. --- Part 1.Wind power generation; --- Part 2.Photovoltaic power generation; --- Part 3.Energy storage power station. Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by the China Electricity Council. This document is under the jurisdiction of the National Technical Committee for Standardization of Short-Circuit Current Calculation (SAC/TC424). This document was drafted by. China Electric Power Research Institute Co., Ltd., State Grid Corporation of China, Guangdong Power Grid Co., Ltd., East China Branch of China Southern Power Grid Co., Ltd., Xi'an Jiaotong University, Huazhong University of Science and Technology, China Southern Power Grid Digital Power Research Institute Co., Ltd., Goldwind Technology Co., Ltd., Shenzhen Hopewind Electric Co., Ltd., and Guangdong New Energy Storage National Research Institute Co., Ltd. The main drafters of this document are. Sun Huadong, Li Yalou, Zhou Peipeng, Xu Wenjia, Zhang Yantao, Zhang Yuhong, Wang Hongfu, Xiang Zutao, Huo Qidi, Wei Chunxia, Wang Meng, Li Jianhua, Duan Xiangying, Xie Pingping, Guo Tao, Ma Xiyuan, Wenminghao, Zhang Chenhao, Yang Zhiqian, Zhou Dangsheng, Liu Tao, Lü Siqi, Xiang Weihua, Gao Zhixuan, Song Ruihua, Zhang Jian, Chen Qiyu, Mou Jianan, Xue Hengyu, Wang Qiunan, Lu Qiuyu, Chen Yu, Chen Deyang, and Aiskar.

introduction

For short-circuit faults in new energy stations and access systems, it is necessary to refine the model and method for short-circuit calculation of new energy stations to improve the High calculation accuracy. Due to the differences in equipment characteristics and station structures of wind power, photovoltaic and energy storage, their short-circuit calculation methods need to be developed separately. Therefore, GB/T 44659 "Calculation of short-circuit current of new energy stations and access systems" was compiled. Divided into components. --- Part 1.Wind power generation. The purpose is to clarify the calculation method of short-circuit current of wind farms and access systems. --- Part 2.Photovoltaic power generation. The purpose is to clarify the calculation method of short-circuit current of photovoltaic power stations and access systems. --- Part 3.Energy Storage Power Station. The purpose is to clarify the calculation method of short-circuit current of energy storage power station and access system. Short-circuit current calculation of new energy stations and access systems Part 1.Wind power generation 1 Scope This document specifies the short-circuit current calculation model and method for wind farms and access systems. This document is applicable to the AC network with voltage level of 10(6)kV and above connected via industrial frequency AC mode, and the converter has a current source The short-circuit current calculation of the wind farm with characteristics is carried out by reference to the wind power generation system connected to the AC network of other voltage levels. 2 Normative references The contents of the following documents constitute the 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 15544.1 Calculation of short-circuit current in three-phase AC systems Part 1.Current calculation GB/T 19963.1 Technical regulations for connecting wind farms to power systems Part 1.Onshore wind power GB/T 44659.2 Calculation of short-circuit current for new energy stations and access systems Part 2.Photovoltaic power generation GB/T 44659.3 Calculation of short-circuit current for new energy stations and access systems Part 3.Energy storage power stations 3 Terms, definitions and symbols 3.1 Terms and Definitions The terms and definitions defined in GB/T 15544.1 and GB/T 19963.1 apply to this document. 3.2 Notation 3.2.1 The formulas listed in this document may be calculated using either nominal values or per unit values. When using nominal values, legal measurement units shall be used. A dot above a letter indicates a complex number or phasor; otherwise, it indicates the magnitude of a real number or phasor. The following symbols apply to this document. AC a. Complex number operators c Voltage coefficient DC G3 three-phase generator The grid-connected port of an HV wind turbine, static VAR generator, or energy storage device, or the unit transformer if one exists. High-voltage side k Steady-state value of the AC component of the three-phase short-circuit current ″k Initial value of the AC component of the three-phase short-circuit current kG Steady-state value of the AC component of the three-phase short-circuit current provided by the equivalent voltage source ″kG Initial value of the AC component of the three-phase short-circuit current provided by the equivalent voltage source

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