| 引用本文: | 程启明,余德清,程尹曼,高杰,张宇,谭冯忍.基于自适应旋转惯量的虚拟同步发电机控制策略[J].电力自动化设备,2018,(12): |
| CHENG Qiming,YU Deqing,CHENG Yinman,GAO Jie,ZHANG Yu,TAN Fengren.Control strategy of virtual synchronous generator based on adaptive rotational inertia[J].Electric Power Automation Equipment,2018,(12): |
|
| 摘要: |
| 针对虚拟同步发电机(VSG)中存在暂态过程长、电能质量差的缺点，提出了一种基于自适应旋转惯量的VSG控制策略。首先，介绍了传统VSG控制存在的问题；然后，在传统VSG控制基础上提出了新型的VSG控制策略，并分析了这种新型VSG并网有功和无功的调节方案。所提VSG控制策略能够根据负载扰动引起的频率变化量实时动态调节旋转惯量，避免了频率迅速上升和跌落，从而改善了频率响应特性。最后，MATLAB/Simulink软件仿真和硬件实验的结果验证了所提VSG控制方法的有效性和可行性。相比于传统VSG方法，所提VSG控制方法的稳定性更好、响应速度更快、超调更小、谐波更低。 |
| 关键词: 微电网 旋转惯量 虚拟同步发电机 逆变器 自适应控制 |
| DOI：10.16081/j.issn.1006-6047.2018.12.012 |
| 分类号:TM31 |
| 基金项目:国家自然科学基金资助项目(61573239)；上海市重点科技攻关计划项目(14110500700)；上海市自然科学基金资助项目(15ZR1418600)；上海市电站自动化技术重点实验室项目(13DZ2273800) |
|
| Control strategy of virtual synchronous generator based on adaptive rotational inertia |
|
CHENG Qiming1, YU Deqing1, CHENG Yinman2, GAO Jie1, ZHANG Yu1, TAN Fengren1
|
|
1.College of Automation Engineering, Shanghai University of Electric Power, Shanghai 200090, China;2.North Power Supply Branch, Shanghai Electric Power Company, Shanghai 200041, China
|
| Abstract: |
| Aiming at the shortcomings of long transient process and poor power quality in VSG(Virtual Synchronous Generator),a control strategy of VSG based on adaptive rotational inertia is proposed. Based on introducing the existing problems of traditional VSG control, a new VSG control strategy is proposed, and the schemes of active and reactive power regulation for the new grid-connected VSG are analyzed. The proposed VSG control strategy can dynamically adjust the rotational inertia in real time according to the frequency variation caused by load disturbance, thus avoiding the rapid rise and fall of frequency and improving the frequency response characteristics. The results of MATLAB/Simulink software simulation and hardware experiment verify the effectiveness and feasibility of the proposed VSG control method. Compared with the traditional VSG control method, the proposed VSG control method has better stability, faster response speed, smaller overshoot and lower harmonics. |
| Key words: microgrid rotational inertia virtual synchronous generator electric inverters adaptive control |
