中国电机工程学报2017，Vol.37Issue(16)：4591-4600,10.DOI:10.13334/j.0258-8013.pcsee.161257
电网故障下计及撬棒保护的双馈感应发电机暂态解析修正模型
Corrected Transient Analysis Model of Doubly Fed Induction Generator With Crowbar Protection Under Grid Fault
付元欢 1李银红 1何璇 1韩鹏1
作者信息
- 1. 强电磁工程与新技术国家重点实验室(华中科技大学),湖北省武汉市430074
- 折叠
摘要
Abstract
Establishment of the transient analytic model of doubly-fed induction generator (DFIG) in power grid under fault occurrence is the basis of analyzing the low voltage ride through (LVRT) capability of wind turbines,and also is an effective way to improve the efficiency of power system fault calculation.Traditional analytic model usually ignores the magnetic coupling between stator and rotor,which brings errors to the DFIG transient model when bypass resistors are connected to protect the converter.A correction model for transient analysis of doubly-fed induction generator with crowbar protection under fault was presented.Based on the space vector model of DFIG,the correction factor was defined for the magnetic coupling between stator and rotor by characteristic roots of state-space equation.The influence of crowbar protection on the transient characteristics of DFIG was analyzed by using the correction factor.Transient analysis modified model of DFIG was derived by solving the statespace equation.The simulation results verify the correctness of the correction factor and the accuracy of the correction transient analysis model.关键词
双馈感应发电机/暂态分析/电网故障/修正模型Key words
doubly-fed induction generator (DFIG)/transient analysis/grid fault/correction model分类
信息技术与安全科学引用本文复制引用
付元欢,李银红,何璇,韩鹏..电网故障下计及撬棒保护的双馈感应发电机暂态解析修正模型[J].中国电机工程学报,2017,37(16):4591-4600,10.
