虚拟同步发电机动态特性参数分析及配置方法研究

陶骞; 陶亮; 崔一铂; 宫金武; 孙建军; 李柏杨

陶骞,陶亮,崔一铂,宫金武,孙建军,李柏杨.虚拟同步发电机动态特性参数分析及配置方法研究[J].电测与仪表,2019,56(21):8-15.
TAO Qian,TAO Liang,CUI Yibo,GONG Jinwu,SUN Jianjun,LI Boyang.Analysis of Dynamic Characteristic Parameters and Research on Its Configuration Methods of Virtual Synchronous Generator[J].Electrical Measurement & Instrumentation,2019,56(21):8-15.

虚拟同步发电机动态特性参数分析及配置方法研究

Analysis of Dynamic Characteristic Parameters and Research on Its Configuration Methods of Virtual Synchronous Generator

DOI：10.19753/j.issn1001-1390.2019.021.002

中文关键词: 虚拟同步发电机动态特性配置方法小信号分析法

英文关键词:virtual synchronous generator dynamic characteristics configuration method small signal analysis

基金项目:

作者中文名	作者英文名	单位
陶骞	TAO Qian	国网湖北省电力公司电力科学研究院
陶亮	TAO Liang	武汉大学电气工程学院
崔一铂	CUI Yibo	国网湖北省电力公司电力科学研究院
宫金武	GONG Jinwu	武汉大学电气工程学院
孙建军	SUN Jianjun	武汉大学电气工程学院
李柏杨	LI Boyang	武汉大学电气工程学院

摘要点击次数: 2176

中文摘要:

虚拟同步发电机(Virtual Synchronous Generator,VSG)技术对提高并网逆变器动态特性,增强逆变型电源对电网友好性具有重要的意义。为解决目前缺乏成套VSG动态特性参数设计方法的问题,进一步推动VSG的工程设计及应用,本文基于小信号分析方法建立了VSG有功—频率控制二阶等值模型,分析了虚拟惯量J和阻尼系数Dp对VSG有功功率控制动态特性的影响,建立了对应VSG欠阻尼、临界阻尼及过阻尼等动态过程下J和Dp的参数域,并提出了基于超调量和过渡时间限制的参数配置方法；同时建立了VSG无功—电压控制一阶等值模型,分析了电压下垂系数KU和无功调节系数KQ对VSG无功功率控制动态特性的影响,建立了KU和KQ的参数域,并提出了基于过渡时间限制的参数配置方法。实践表明：所提出的配置方法对于VSG技术理论研究和工程应用过程中的参数选择环节具有很大的参考价值。最后,利用Matlab/Simulink平台的仿真结果证明了所提VSG参数配置方法的正确性和有效性。

英文摘要:

Virtual Synchronous Generator(VSG) technology is of great significance to improve the dynamic characteristics of grid-connected inverters and enhance the friendliness of contravariant power to the grid. In order to solve the problem of lacking a set of methods to design VSG’s dynamic characteristic parameters and further promote the engineering design and application of VSG, this paper established the second-order equivalent model of VSG’s active power-frequency controller based on the small signal analysis and analyzed the influence of parameters J and Dp on VSG’s control of active power. The parameter domain of J and Dp in the dynamic process of under-damping, critical damping and over-damping of VSG is established and the parameter configuration methods based on the limitation of overshoot and transition time are proposed. At the same time, first-order equivalent model of VSG’s reactive power-voltage controller based on the small signal analysis is established, the influence of parameters KU and KQ on the dynamic characteristics of VSG’s control of reactive power is analyzed, the parameter domain of KU and KQ is established and the parameter configuration methods based on the limitation of transition time are proposed. Practice shows that the proposed configuration methods have a great reference value for the parameter selection in the VSG technology research and engineering application. Finally, the simulation results of Matlab/Simulink platform are used to prove the correctness and validity of the proposed VSG parameter configuration methods.

查看全文查看/发表评论下载PDF阅读器

关闭