电工技术学报  2019, Vol. 34 Issue (1): 128-138    DOI: 10.19595/j.cnki.1000-6753.tces.L80459
电力系统 |
基于虚拟同步发电机双机并联系统的参数自调节优化控制策略
任碧莹, 邱姣姣, 刘欢, 孙向东
西安理工大学自动化与信息工程学院 西安 710048
Optimization Control Strategy of Self-Adjusting Parameter Based on Dual-Parallel Virtual Synchronous Generators
Ren Biying, Qiu Jiaojiao, Liu Huan, Sun Xiangdong
Faculty of Automation and Information Engineering Xi’an University of Technology Xi’an 710048 China
全文: PDF (1690 KB)  
输出: BibTeX | EndNote (RIS)      
摘要 

针对虚拟同步发电机(VSG)双机并联系统在采用固定的转动惯量及阻尼系数时无法兼顾有功功率振荡和频率波动的问题,该文提出一种参数自调节优化控制策略。首先,建立VSG双机并联系统的小信号模型,分析转动惯量及阻尼系数对输出有功特性的影响;其次,在满足系统动稳态性能的转动惯量及阻尼系数限定取值范围内,根据转子角速度变化率及其偏差量引入了改变转动惯量及阻尼系数的参数自调节优化控制;最后,通过仿真结果验证了所提控制策略的有效性。该策略在保证系统稳定运行的同时,既可抑制VSG并入交流母线过程中的有功振荡,亦可提高频率的支撑能力。

服务
把本文推荐给朋友
加入我的书架
加入引用管理器
E-mail Alert
RSS
作者相关文章
任碧莹
邱姣姣
刘欢
孙向东
关键词 虚拟同步发电机双机并联小信号模型输出有功特性参数自调节优化控制    
Abstract

There are the problems of active power oscillation and frequency fluctuation for dual-parallel virtual synchronous generators (VSGs) with the fixed moment of inertia and damping coefficient, therefore, an optimization control strategy of self-adjusting parameters is proposed in this paper. Firstly, a small signal model of the parallel VSG system is established, and the influence of moment of inertia and damping coefficient on output active power is analyzed. Secondly, the parameter optimization control for the self-adjusting inertia and damping coefficient is introduced according to the change rate and the deviation of rotor angular velocity within the restricted range of satisfying the dynamic and steady state performance of the system. Finally, the effectiveness of the proposed control method is verified by simulation results. This method can not only suppress the active power oscillation during the process of VSG connecting with AC bus and ensure the stable operation of the system, but also improve the frequency support ability.

Key wordsVirtual synchronous generator    dual-parallel system    small-signal model    active power output characteristics    self-adjusting parameter optimization control   
收稿日期: 2018-06-30      出版日期: 2019-01-10
PACS: TM464  
基金资助:

国家自然科学基金(51477139)和陕西省自然科学基金(2017JM5075)资助

通讯作者: 邱姣姣 女,1993年生,硕士研究生,研究方向为逆变器并联控制技术。E-mail:1181146823@qq.com   
作者简介: 任碧莹 女,1971年生,博士,副教授,研究方向为微电网发电及其控制技术。E-mail:renby@126.com
引用本文:   
任碧莹, 邱姣姣, 刘欢, 孙向东. 基于虚拟同步发电机双机并联系统的参数自调节优化控制策略[J]. 电工技术学报, 2019, 34(1): 128-138. Ren Biying, Qiu Jiaojiao, Liu Huan, Sun Xiangdong. Optimization Control Strategy of Self-Adjusting Parameter Based on Dual-Parallel Virtual Synchronous Generators. Transactions of China Electrotechnical Society, 2019, 34(1): 128-138.
链接本文:  
https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.L80459          https://dgjsxb.ces-transaction.com/CN/Y2019/V34/I1/128