[1]陈 洁,郭 志,付翰翔,等.基于撬棒控制策略的DFIG风电场动态等值建模研究[J].高压电器,2020,56(03):190-196.[doi:10.13296/j.1001-1609.hva.2020.03.028]
 CHEN Jie,GUO Zhi,FU Hanxiang,et al.Research on Dynamic Equivalence Modeling of Wind Farm Composed of Double Fed Induction Generators Based on Crowbar Control Strategy[J].High Voltage Apparatus,2020,56(03):190-196.[doi:10.13296/j.1001-1609.hva.2020.03.028]
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基于撬棒控制策略的DFIG风电场动态等值建模研究()
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《高压电器》[ISSN:1001-1609/CN:61-11271/TM]

卷:
第56卷
期数:
2020年03期
页码:
190-196
栏目:
研究与分析
出版日期:
2020-03-15

文章信息/Info

Title:
Research on Dynamic Equivalence Modeling of Wind Farm Composed of Double Fed Induction Generators Based on Crowbar Control Strategy
作者:
陈 洁1 郭 志2 付翰翔1 张 震2 郭大鹏2 张 莹2
(1. 新疆大学电气工程学院, 乌鲁木齐 830047; 2. 国网淮南供电公司, 安徽 淮南 32000)
Author(s):
CHEN Jie1 GUO Zhi2 FU Hanxiang1 ZHANG Zhen2 GUO Dapeng2 ZHANG Ying2
(1. College of Electrician Engineering,Xinjiang University, Urumqi 830047, China; 2. State Gird Huainan Power Supply Company,Anhui Huainan 232000, China)
关键词:
双馈发电机组 撬棒电路 动态等值 低电压穿越 控制策略
Keywords:
doubly-fed wind power generator (DFIG) crowbar circuit dynamic equivalence low voltage ride through control strategy
DOI:
10.13296/j.1001-1609.hva.2020.03.028
摘要:
为研究双馈风电机组(doubly fed induction generator,DFIG)低电压穿越对风电场动态等值的影响,提出了一种基于撬棒控制策略的双馈风电场动态等值建模方法。首先通过对DFIG在电网故障时的转子电流分析,给出了时域下转子暂态电流表达式。然后研究撬棒电路两种常用控制策略在不同电压跌落程度及DFIG运行状况下对风电机组低电压穿越的影响,仿真结果表明两种控制策略均有各自的适用范围。在此基础上,文中提出了撬棒电路投切曲线及控制策略选择区域曲线,以此判断电网故障时撬棒电路投切以及投切时控制策略选择情况。考虑故障前一时刻风电场机群划分情况,在电网故障时以实测风速与撬棒电路是否动作共同作为分群指标,将撬棒电路动作机组从故障前原“N”个机群中独立出来形成“N+1”个机群,利用容量加权法计算各机群参数,建立多机等值模型。最后在MATLAB/Simulink平台上搭建算例,验证了该等值方案的有效性和准确性。
Abstract:
In order to study the effect of low voltage ride through of doubly fed induction generator(DFIG) on dynamic equivalence of wind farm, a double fed wind farm dynamic equivalent modeling method based on crowbar control strategy is presented. Firstly, the rotor current is analyzed when DFIG is in power network fault, and the expression of rotor transient current in time domain is given. Then study two commonly used control strategies of the crowbar circuit effect on low voltage ride through under the different voltage drop and DFIG operation status. And the simulation results show that the two control strategies have their own scope of application. On the basis of this, the paper puts forward the crowbar circuit switching curve and control strategy selection area curve, which we can judge the selection of the lever circuit and the control strategy when the power grid fails. Taking into account the division of wind farm cluster at the moment before fault, the measured wind speed and the crowbar circuit is action as the clustering index when the grid is fault. The crowbar circuit unit from the original “N” cluster to form “N+1” cluster before fault, calculating the parameters of each cluster with the method of capacity weighting, multi machine equivalent model was established. Finally, a calculation case is constructed on MATLAB/Simulink platform and the simulation results show that the proposed equivalent scheme is effective and accuracy.

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备注/Memo

备注/Memo:
收稿日期:2019-11-05; 修回日期:2020-01-07 基金项目:国家自然科学基金项目(51467020)。 Project Supported by National Natural Science Foundation of China(51467020). 陈 洁(1975—),女,博士,副教授,研究方向为风电储能。 郭 志(1990—),男,硕士研究生,研究方向为风电场建模。
更新日期/Last Update: 2020-03-15