PSCAD simulation model of D-PMSGs interfaced with AC power grid

The converter controller of wind turbine presents capacitive impedance characteristics with negative resistance at subsynchronous frequencies. When it is connected to weak AC power grid, it will form an LC resonant circuit with system-side inductance, and generate sub-/super-synchronous oscillations due to negative damping effect. A PSCAD simulation model of direct-drive wind farm connected to AC power grid is provided to study the above phenomenon.  风力发电机组的变流器控制器 (converter controller of wind turbine) 在次同步频率 (subsynchronous frequencies) 下呈现出带有负电阻 (negative resistance) 的容性阻抗特性 (capacitive impedance characteristics)。当该控制器接入弱交流电网 (weak AC power grid) 时，将与系统侧电感 (system-side inductance) 构成LC谐振回路 (LC resonant circuit)，并因负阻尼效应 (negative damping effect) 产生次/超同步振荡 (sub-/super-synchronous oscillations)。本文提供了一套接入交流电网的直驱式风电场 (direct-drive wind farm) PSCAD仿真模型 (PSCAD simulation model)，用于研究上述现象。

搜集汇总

背景与挑战

背景概述

该数据集提供了一个直驱永磁同步发电机（D-PMSG）与交流电网接口的PSCAD仿真模型，用于研究在弱电网条件下由变流器控制器负阻尼效应引发的次/超同步振荡现象。数据集包含仿真文件（*.pscx格式），允许用户通过调整系统等效阻抗、并网风机数量等参数来模拟振荡频率和幅值变化，适用于电力系统稳定性分析领域。