摘要
传统双馈风力发电机组因自身特性,缺乏类似同步机组的惯量响应能力,会减弱系统在运行过程中的抗扰动能力,使电网稳定性受到挑战。本文根据变流器特性,建立变流器直流母线电容电压与变流器有功功率偏差以及转子转速响应的函数模型,提出一种基于变流器直流母线电容电压变化的虚拟电容控制以及转子转速协同控制策略,最后在软件中验证策略的可行性。仿真结果表明,在不同工况下,该协同控制策略能增强双馈风力发电机惯量响应能力,提高转子稳定速度,降低变流器母线电压与有功功率变化幅度,稳定机组输出。
Due to their own characteristics,co nventional doubly-fed wind inductor generator lacks the inertia response capability similar to synchronous units,which will lead to the weakening of the anti-disturbance ability of the system during operation,and the stability of the power grid will be challenged.Establish the function model of converter DC bus capacitor voltage,converter active power deviation and rotor speed response according to the converter characteristics,and propose a virtual capacitor based on the change of capacitor voltage of the DC bus capacitor and rotor speed cooperative control strategy.Finally,the feasibility of the strategy is verified in software.The simulation results show that under different working conditions,the cooperative control strategy can increase the inertia respond capability of the doubly-fed wind turbine,improve the stable rotor speed,reduce the variation range of the converter bus voltage and active power,and stabilize the unit output.
作者
胥心怡
李梦珊
XU Xinyi;LI Mengshan(Energy Engineering College of Xinjiang Institute of Engineering,Urumqi,Xinjiang 830023,China)
出处
《自动化应用》
2023年第13期90-93,96,共5页
Automation Application
关键词
双馈风力发电机
虚拟电容控制
转子转速控制
惯量支撑
稳定性
doubly-fed wind inductor generator
virtual capacitor control
rotor speed contro
inertia support
stability
作者简介
胥心怡,女,1997年生,硕士研究生,工程师,研究方向为含风电电力系统稳定性分析与控制。
