|本期目录/Table of Contents|

[1]王兴贵,董婉婉,王海亮.结合电压谐波补偿和VSG的MMC-MG系统并离网切换控制[J].工业仪表与自动化装置,2022,(04):64-69+90.[doi:10.19950/j.cnki.cn61-1121/th.2022.04.013]
　WANG Xinggui,DONG Wanwan,WANG Hailiang.Combined voltage harmonic compensation with VSG for grid-connected and off-grid switching control of MMC-MG system[J].Industrial Instrumentation & Automation,2022,(04):64-69+90.[doi:10.19950/j.cnki.cn61-1121/th.2022.04.013]
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结合电压谐波补偿和VSG的MMC-MG系统并离网切换控制

《工业仪表与自动化装置》[ISSN:1000-0682/CN:61-1121/TH]

卷:
期数:
2022年04期
页码:
64-69+90
栏目:
出版日期:
2022-08-15

文章信息/Info

Title:
Combined voltage harmonic compensation with VSG for grid-connected and off-grid switching control of MMC-MG system
文章编号:
1000-0682（2022）04-0000-00
作者:
王兴贵; 董婉婉; 王海亮
兰州理工大学 电气工程与信息工程学院，甘肃 兰州 730050
Author(s):
WANG Xinggui;  DONG Wanwan;  WANG Hailiang
College of Electrical and Information Engineering, Lanzhou University of Technology, Gansu Lanzhou 730050, China
关键词:
串联结构微电网; 并离网切换; 电压谐波补偿; 虚拟同步发电机; 预同步
Keywords:
series structure microgrid;  grid-connected and off-grid switching;  voltage harmonic compensation;  virtual synchronous generator;  pre-synchronization
分类号:
TM464
DOI:
10.19950/j.cnki.cn61-1121/th.2022.04.013
文献标志码:
A
摘要:
针对MMC半桥串联结构微电网(Modular Multilevel Converter Microgrid, MMC-MG)运行模式切换时产生的输出电压偏移与冲击电流问题，研究了一种电压谐波补偿和虚拟同步发电机相结合的系统并离网切换控制策略。为了降低系统输出电压的偏移量和直流分量，在双闭环控制中加入电压谐波补偿。然后，将虚拟同步发电机控制与预同步控制相结合，以降低系统孤岛转并网时的冲击电流和频率波动。与未加预同步相比，该控制策略可使系统的频率波动和冲击电流幅值明显降低，保证系统并离网平滑切换。
Abstract:
In order to solve the problem of output voltage offset and impulse current caused by operation mode switching of MMC-MG system, a control strategy for grid-connected and off-grid switching of the system combining voltage harmonic compensation and virtual synchronous generator is studied. To reduce the offset of the output voltage and the DC component, voltage harmonic compensation is added to the double closed-loop control. And virtual synchronous generator control is combined with pre-synchronous control to alleviate the current shocks and frequency fluctuations when the system is islanded to grid-connected. The results show that the control strategy can significantly reduce the frequency fluctuation and inrush current amplitude of the system compared with that without pre-synchronization, and ensure the smooth switching of the system operation mode.

参考文献/References:

[1]ZHOU X, GUO T, MA Y. An overview on microgrid technology[C]// 2015 IEEE International Conference on Mechatronics and Automation (ICMA). IEEE, 2015: 76-81.

[2]王素娥, 吴永斌, 熊连松, 等. 光伏并网发电系统的虚拟惯量控制策略[J]. 高电压技术, 2020, 46(11): 3743-3751.
[3]汤旻安, 高晓红. 不平衡电网电压条件下光储微电网并网控制[J]. 高电压技术, 2019, 45(06): 1879-1888.
[4]王兴贵, 薛晟, 李晓英. 模块化多电平变流器半桥串联结构微电网输出特性分析[J]. 电工技术学报, 2019, 34(10): 2130-2140.
[5]刘梦超,王生铁,温素芳.光储微电网并离网平滑切换控制策略研究[J].可再生能源, 2020, 38(12): 1633-1639.
[6]ZHOU Z, LONG J. An improved grid-connected pre-synchronization method for photovoltaic micro-grid [J]. Journal of Physics: Conference Series, 2020, 1549(5): 052040.
[7]LIANG B, LI Y, WEI Z, et al. Control analysis of inverter parallel system based on virtual synchronous generator[C]// IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society. IEEE, 2017, 4116-4123.
[8]柴伦, 李岚, 李冰, 等. 基于改进虚拟同步发电机的预同步并网策略[J]. 可再生能源, 2019, 37(07):1015-1020.
[9]高永军, 孙向东, 周兆吉. 基于虚拟阻抗功率的无锁相环并网预同步控制[J]. 电力电子技术, 2021, 55(04): 99-102.
[10]XUE S, WANG X, LI X. Output voltage control of MMC-based microgrid based on voltage fluctuation compensation sliding mode control[J]. Mathematical Problems in Engineering, 2020.[11]ZHONG Q C, WEISS G. Synchronverters: Inverters that mimic synchronous generators[J]. IEEE Transactions on Industrial Electronics, 2011, 58(4):1259-1267.
[12]分布式电源并网运行控制规范:GB/T 33592-2017 [S].2017.

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备注/Memo

备注/Memo:
收稿日期：2022-04-13?div>基金项目：国家自然科学基金资助项目(51967011)
作者简介：王兴贵(1963)，男，博士生导师，教授，从事可再生能源发电系统与控制，微电网技术，电力电子与电力传动研究。
更新日期/Last Update: 1900-01-01