电力系统及其自动化学报2025，Vol.37Issue(2)：29-37,9.DOI:10.19635/j.cnki.csu-epsa.001439
基于阻抗重塑的双馈风机并网宽频振荡抑制策略
Wideband Oscillation Suppression Strategy for Grid-connected DFIG Based on Impedance Reshaping
摘要
Abstract
To address the problem of wideband oscillation induced by a grid-connected doubly-fed induction generator(DFIG),a wideband oscillation suppression strategy based on impedance reshaping is proposed.Through the analysis of a DFIG impedance model,it is pointed out that the capacitive negative damping introduced by the phase-locked loop(PLL)control is the cause of wideband oscillation.On this basis,an impedance reshaping method with additional volt-age feed-forward compensated PLL is put forward,which extracts the wideband oscillatory components through feed-for-ward series trap filters to reshape the DFIG wideband impedance.A grid-connected DFIG system model is constructed and simulated,and results show that the proposed strategy can effectively suppress the wideband oscillation induced by the DFIG connected to weak grid under a wide-range variation of grid impedance.关键词
宽频振荡/双馈风机(DFIG)/弱电网/阻抗重塑/锁相环(PLL)Key words
wideband oscillation/doubly-fed induction generator(DFIG)/weak grid/impedance reshaping/phase-locked loop(PLL)分类
信息技术与安全科学引用本文复制引用
王宁,柯伟鹏,姚睿哲,陈涛,李岳..基于阻抗重塑的双馈风机并网宽频振荡抑制策略[J].电力系统及其自动化学报,2025,37(2):29-37,9.基金项目
国网辽宁省电力有限公司"揭榜挂帅"科技攻关项目(2021YF-82). （2021YF-82）
