Study on Fast Analysis Method Transient Fundamental Frequency Overvoltage of Wind Turbine Generators in Sending System when Serious Power Disturbances Occur in Large-capacity UHVDC

CAO Shengshun; ZHANG Wenchao; WANG Meng; PAN Yan; GUO Qiuting; LIU Jun

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Study on Fast Analysis Method Transient Fundamental Frequency Overvoltage of Wind Turbine Generators in Sending System when Serious Power Disturbances Occur in Large-capacity UHVDC

更新时间：2025-12-08

- Study on Fast Analysis Method Transient Fundamental Frequency Overvoltage of Wind Turbine Generators in Sending System when Serious Power Disturbances Occur in Large-capacity UHVDC
- Vol. 43, Issue 10, Pages: 3300-3306(2017)
- 作者机构：
  
  1. 西北电力调控分中心
  2. 南京南瑞集团公司
  3. 西安交通大学电气工程学院陕西省智能电网重点实验室
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：30 October 2017，
  
  Published：2017
- 稿件说明：
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CAO Shengshun, ZHANG Wenchao, WANG Meng, et al. Study on Fast Analysis Method Transient Fundamental Frequency Overvoltage of Wind Turbine Generators in Sending System when Serious Power Disturbances Occur in Large-capacity UHVDC[J]. 2017, 43(10): 3300-3306.
DOI：

CAO Shengshun, ZHANG Wenchao, WANG Meng, et al. Study on Fast Analysis Method Transient Fundamental Frequency Overvoltage of Wind Turbine Generators in Sending System when Serious Power Disturbances Occur in Large-capacity UHVDC[J]. 2017, 43(10): 3300-3306. DOI：

摘要

近年来

随着特高压直流与新能源发电的不断发展

当特高压大容量直流发生功率大扰动时

送端风电机组往往将感受到比较严重的暂态过电压

可能引发大面积风电脱网。针对此问题

深入分析了直流功率大扰动引起风机暂态过电压的机理

并提出了一种换流母线及风机暂态过电压的快速分析计算方法

推导了节点负荷变化引起节点电压变化的全微分灵敏度计算式。最后结合酒泉—湖南直流风电送出系统算例进行了仿真验证

结果表明所提方法可用来有效评估直流大扰动过程中风机暂态过电压

与经验计算方法相比

该方法将暂态过电压数值计算相对误差从21%降低至14%

具有较强的工程适用性。

Abstract

In recent years

with the rapid development of UHV technology and renewble energy generation

when serious power disturbances occur in the large-capacity UHVDCs

the wind turbine generators in sending systems will suffer from serious transient fundamental frequency overvoltage

which may cause many wind turbine generators to trip possibly.Aiming at the problem above

we analyzed the mechanism of the overvoltage throughly

then poposed a fast computational method for the ovevoltage

in which the complete differntial sensitivity formula for node voltage variation caused by load variation were derived.The results are verified with the Jiuquan-Hunan HVDC wind transmission case system.The results show that the proposed method can be adopted to assess the overvoltage of wind turbine generators due to serious power disturbance in UHVDC

the error can be reduced from 21% to 14% compared to the experienced method

which has better engineering applicability.

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