电力系统自动化2025，Vol.49Issue(14)：65-75,11.DOI:10.7500/AEPS20240816004
综合节点电压-支路电流的风电并网系统场内/场网振荡模式辨识
Identification of Inside-wind-farm/Wind-farm-Grid Oscillation Modes for Wind Power Grid-connected System Combined Node Voltage and Branch Current
摘要
Abstract
The wind power grid-connected system has both inside-wind-farm/wind-farm-grid oscillation modes,The excitation conditions and suppression methods of different modes are different,and the inside-wind-farm oscillation is difficult to monitor in the wide-area system,which affects the safe and stable operation of the wind farm.Therefore,it is necessary to analyze the interaction between wind turbines in the wind farm,then obtain the oscillation characteristics of various oscillation modes and effectively identify the inside-wind-farm/wind-farm-grid oscillation modes,which provides a reference for oscillation suppression in the wind power grid-connected system.Based on the grid-connected system of multiple units in the wind farm,the frequency-domain impedance model is used to analyze the mechanism of inside-wind-farm/wind-farm-grid oscillation modes for the direct-drive wind power grid-connected system.It is found that the traditional node voltage analysis method may fail in the identification of the inside-wind-farm oscillation mode.Then,according to the results of the inside-wind-farm/wind-farm-grid oscillation mode analysis,based on the idea of oscillation source location,a mode identification method is proposed considering the oscillation characteristics of node voltage and branch current.This method can identify the inside-wind-farm/wind-farm-grid oscillation and the modes with the risk of inside-wind-farm/wind-farm-grid oscillation.Finally,based on the results of the identification,the time-domain simulation of the corresponding oscillation mode is carried out,and the effectiveness of the identification method is verified.关键词
永磁直驱风机/振荡模式/节点电压/支路电流/频域阻抗模型/交互作用Key words
permanent magnet direct-drive wind turbine/oscillation mode/node voltage/branch current/frequency-domain inpedance model/interaction引用本文复制引用
胡宸凤,郭春义,张加卿,孟凡彬..综合节点电压-支路电流的风电并网系统场内/场网振荡模式辨识[J].电力系统自动化,2025,49(14):65-75,11.基金项目
国家自然科学基金面上项目(52277093). This work is supported by National Natural Science Foundation of China(No.52277093). （52277093）
