中国电力2024，Vol.57Issue(8)：55-66,12.DOI:10.11930/j.issn.1004-9649.202308003
基于SVG附加电流反馈阻抗重塑的双馈风电场次/超同步振荡抑制策略
Suppression Strategy of Sub/Super-synchronous Oscillations in Doubly-Fed Wind Farm Based on SVG Additional Current Feedback Impedance Reshaping
摘要
Abstract
Doubly-fed wind farm often interacts with the power grid,leading to sub/super-synchronous oscillations.To address the issue of limited adaptability in suppressing these oscillations using impedance reshaping methods,this paper proposes an impedance reshaping method based on a static var generator(SVG)-additional current feedback control.The virtual impedance established by this method is correlated with the impedance characteristics of the wind farm,providing greater flexibility compared with fixed virtual impedance obtained through modeling and analytical design.Initially,the virtual impedance formulation,incorporating the SVG and wind farm grid-connected impedance models,is derived.Subsequently,the effectiveness of the proposed method and the impact of impedance reshaping control parameters on the suppression performance are analyzed based on impedance frequency characteristics.Finally,based on the grid-connected model of a doubly-fed wind farm in Qinghai Province,an electromagnetic transient simulation model is developed in PSCAD/EMTDC.The simulation results demonstrate that the proposed method achieves impedance reshaping for the wind farm under different oscillation conditions,effectively suppressing sub/super-synchronous oscillations in the wind farm.关键词
风电场/次/超同步振荡/静止同步补偿器/振荡抑制/阻抗重塑Key words
wind farm/sub/super-synchronous oscillations/SVG/oscillation suppression/impedance reshaping引用本文复制引用
王泽嘉,韩民晓,范溢文..基于SVG附加电流反馈阻抗重塑的双馈风电场次/超同步振荡抑制策略[J].中国电力,2024,57(8):55-66,12.基金项目
国家电网有限公司科技项目(5100-202199533A-0-5-ZN).This work is supported by Science&Technology Project of SGCC(No.5100-202199533A-0-5-ZN). （5100-202199533A-0-5-ZN）
