含双馈风电场的电力系统低频振荡模态与阻尼分析
摘要:针对双馈风电场高渗透率接入电网对低频振荡的不确定性问题，在2种工作模式下提出一种特征值分析方法。首先分析传统低频振荡产生的机制，然后在DigSilent仿真平台中建立双馈风电机(double fed induction generator，DFIG)模型，最后对不同渗透率的双馈风电场接入电网进行仿真计算和特征值分析。结果表明，在高风速恒功率运行模式下，阻尼比随着风电渗透率增大而增大；在低风速恒转速运行模式下，阻尼比随着风电渗透率增大而呈现先增大后减小的规律。通过仿真IEEE 3机9节点系统，验证该方法的有效性和正确性。
Abstract：In view of the uncertainty problem of the low frequency oscillation caused by the doubly fed wind farm's accesss to power grid under high permeability, this paper presents a method of eigenvalue analysis under two working modes. Firstly, we analyze the mechanism of the traditional low frequency oscillation, and then establish the double fed induction generator (DFIG) model in the DigSilent simulation platform. Finally, we analyze the simulation and the characteristic values of the doubly fed wind farm's access to power grid under different permeability. The results show that the damping ratio increases with the increase of wind power penetration under the operation mode of constant power at high wind speed, and under the operation mode of constant speed at low wind speed, the damping ratio increases with the increase of wind power penetration at first, but later it decreases with the increase of wind power penetration. The simulation of IEEE 9-Machine 3-bus system verifies the validity and correctness of this method.
标题：含双馈风电场的电力系统低频振荡模态与阻尼分析
title:Low Frequency Oscillation Modes and Damping Analysis of Power System With Doubly Fed Wind Farm
作者：王琪鑫,唐飞
authors:WANG Qixin,TANG Fei
关键词：电力系统,双馈风电机组(DFIG),低频振荡,小干扰稳定,特征值,阻尼特性,
keywords:electric power system,doubly fed induction generator(DFIG),low frequency oscillation,small-signal stability,eigenvalue,damping characteristic,
发表日期：2017-06-28
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