直驱风电并网系统小信号建模与次同步振荡特性
Small signal modeling and SSO characteristic analysis of D-PMSG grid-connected system
苏勋文 1查鹏飞 1赵麟 1王浠再1
作者信息
- 1. 黑龙江科技大学 电气与控制工程学院,哈尔滨 150022
- 折叠
摘要
为研究直驱风电经串补线路并网系统的次同步振荡(SSO)问题,以直驱风电-串补系统为研究对象,利用Matlab/Simulink搭建系统小信号模型,计算模型初值,基于特征值分析法研究了不同参数对系统 SSO 阻尼特性的影响.结果表明,直驱风电-串补系统存在一个频率为40.44 Hz,阻尼比为-0.039 的SSO模式.当系统滤波电感和直流电容增大时,系统的SSO阻尼增大,当系统串补度、GSC直流电压控制参数增大时和系统的SSO阻尼减小.
Abstract
This paper aims to study the subsynchronous oscillation(SSO)problem of direct-driven wind power grid-connected system through series-compensated lines.The study targeted at D-PMSG-se-ries compensation system performs a small signal system model by Matlab/Simulink,calculates the initial value of the model,and studies the influence of different parameters on SSO damping characteristics of the system by eigenvalue analysis.The results show that an SSO mode with a frequency of 40.44 Hz and a damping ratio of-0.039 exists in the direct-driven wind power-series compensation system.The SSO damping of the system increases with the increase of filter inductance and DC capacitance,and decreases with the increase of the system series complement and GSC DC voltage control parameters.
关键词
直驱风电/特征值法/小信号模型/初值计算/SSOKey words
D-PMSG/eigenvalue method/small signal model/calculation of initial value/SSO引用本文复制引用
基金项目
国家自然科学基金项目(51677057)
黑龙江省省属高校基本科研业务费项目(2021-KYYWF-1467)
出版年
2024
国家科技期刊平台
NSTL
维普
万方数据