计算机与数字工程2024，Vol.52Issue(3)：950-954,961,6.DOI:10.3969/j.issn.1672-9722.2024.03.054
基于Crowbar与Buck电路对双馈风力发电机LVRT的研究
Research on Double-fed Wind Turbine Generator LVRT Based on Crowbar and Buck Circuits
缑新科 1王博1
作者信息
- 1. 兰州理工大学电气工程与信息工程学院 兰州 730050
- 折叠
摘要
Abstract
In the doubly-fed wind generation system,when the grid voltage drop is serious,the traditional excitation control strategy or only introducing crowbar protection circuit on the rotor side can no longer meet the requirements of low voltage crossing when voltage drop(LVRT),this paper introduces buck protection circuit on the DC side to cooperate with the rotor side active crow-bar protection circuit,which more helps to the drop voltage recovery and greatly improves the ability of network voltage crossing.First the mathematical model of doubly-fed wind generator(DFIG)is built,the transient characteristic is analyzed,the relevant fault voltage current expression is derived,and then the resistance value of crowbar protection circuit and buck protection circuit are fixed.The feasibility and superiority of the combined protection circuit are verified through simulation analysis.关键词
低压穿越/撬棒保护电路/卸荷保护电路/阻值整定Key words
low-voltage ride through/crowbar protection circuit/buck protection circuit/resistance setting分类
信息技术与安全科学引用本文复制引用
缑新科,王博..基于Crowbar与Buck电路对双馈风力发电机LVRT的研究[J].计算机与数字工程,2024,52(3):950-954,961,6.
