戚军;李袁超;童辉;周丹;张有兵;

• 1:浙江工业大学信息工程学院

摘要(Abstract)：

随着分布式电源渗透率的逐步提高,虚拟同步发电机技术(virtual synchronous generator,VSG)得到了广泛的研究和应用,但传统VSG存在并网速度慢、有功/无功功率耦合影响调控效果的问题。首先在传统自同步VSG模型基础上,提出加入并网电压相角预同步单元以加快VSG并网速度。随后分析了中低压电网的功率耦合机理,结合虚拟阻抗技术,提出基于动态虚拟电流前馈的预同步VSG功率二阶解耦策略。最后,Matlab/Simulink仿真结果表明:该新型预同步VSG不仅可以实现快速平滑的并网控制,而且调控过程中有功功率和无功功率得到较好的解耦,尤其在下垂控制中还可以提高功率稳态调控精度。

关键词(KeyWords)： 虚拟同步机;预同步;功率解耦;动态虚拟电流

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51777193);; 浙江省重点研发计划项目(2019C01149)~~

作者(Author): 戚军;李袁超;童辉;周丹;张有兵;

Email:

DOI: 10.13335/j.1000-3673.pst.2019.2685

参考文献(References)：

• [1]钟庆昌，托马斯.霍尔尼克．新能源接入智能电网的逆变控制关键技术[M]．钟庆昌，王晓琳，曹鑫，等，译．北京：机械工业出版社，2016.
• [2] Zhong Q C,Hornik T.Control of power inverters in renewable energy and smart grid integration[M].NewYork:Wiley-IEEE Press,2013.
• [3]郑天文，陈来军，陈天一，等．虚拟同步发电机技术及展望[J]．电力系统自动化，2015,39(21):165-175.Zheng Tianwen,Chen Laijun,Chen Tianyi,et al.Review and prospect of virtual synchronous generator technology in distributed generation[J].Automation of Electric Power Systems,2015,39(21):165-175(in Chinese).
• [4]吕志鹏，盛万兴，钟庆昌，等．虚拟同步发电机及其在微电网中的应用[J]．中国电机工程学报，2014,34(16):2591-2603.LüZhipeng,Sheng Wanxing,Zhong Qingchang,et al.Virtual synchronous generator and its applications in mirco-grid[J].Proceedings of the CSEE,2014,34(16):2591-2603(in Chinese).
• [5]苏剑．分布式电源与微电网并网技术[M]．北京：中国电力出版社，2015:1-7.
• [6]张兴，朱德斌，徐海珍．分布式发电中的虚拟同步发电机技术[J]．电源学报，2012,10(3):1-6.Zhang Xing,Zhu Debin,Xu Haizhen.Review of virtual synchronous generator technology in distributed generation[J].Journal of Power Supply,2012,10(3):1-6(in Chinese).
• [7] Bevrani H,Ise T,Miura Y.Virtual synchronous generators:a survey and new perspectives[J].International Journal of Electrical Power&Energy Systems,2014(54):244-254.
• [8] Shafiee Q,Guerrero J M,Vasquez J C.Distributed secondary control for islanded micro-grids:a novel approach[J].IEEE Transactions on Power Electronics,2014,29(2):1018-1031.
• [9]吕志鹏，梁英，曾正，等．应用虚拟同步电机技术的电动汽车快充控制方法[J]．中国电机工程学报，2014,34(25):4287-4294.LüZhipeng,Liang Ying,Zeng Zheng,et al.Virtual synchronous machine based control scheme of fast charger for electric vehicle application[J].Proceedings of the CSEE,2014,34(25):4287-4294(in Chinese).
• [10]李鹏，杨世旺，殷梓恒．基于相对增益矩阵的微网稳压解耦下垂控制方法[J]．中国电机工程学报，2015,35(5):1041-1050.Li Peng, Yang Shiwang, Ying Ziheng. Objective function diagonalization decoupling control of microgrid power based on relative gain analysis[J].Proceedings of the CSEE,2015,35(5):1041-1050(in Chinese).
• [11] Zhong Q C,Nguyen P L,Ma Z.Self-synchronized synchronverters:inverters without a dedicated synchronization unit[J]. IEEE Transactions on Power Electronics,2014,29(2):617-630.
• [12]钟庆昌．虚拟同步机与自主电力系统[J]．中国电机工程学报，2017,37(2):336-348.Zhong Qingchang.Virtual synchronous machines and autonomous power systems[J].Proceedings of the CSEE,2017,37(2):336-348(in Chinese).
• [13] Wu H,Ruan X B,Yang D S,et al.Small-signal modeling and parameters design for virtual synchronous generators[J]. IEEE Transactions on Industrial Electronics,2016,63(7):4292-4303.
• [14]李旭枫，陆立民，成乐祥，等．基于自适应虚拟阻抗改进无功环路的虚拟同步功率解耦控制策略[J]．电网技术，2019,43(10):3752-3760.Li Xufeng,Lu Limin,Cheng Lexiang,et al.Power decoupling control strategy in virtual synchronous generator with improved reactive power loop based on adaptive virtual impedance[J].Power System Technology,2019,43(10):3752-3760(in Chinese).
• [15]屈子森，蔡云旖，杨欢，等．基于自适应虚拟阻抗的虚拟同步机功率解耦控制策略[J]．电力系统自动化，2018,42(17):58-72.Qu Zisen,Cai Yunyi,Yang Huan,et al.Strategy of power decoupling control for virtual synchronous generator based on adaptive virtual impedances[J].Automation of Electric Power Systems,2018,42(17):58-72(in Chinese).
• [16]李明烜，王跃，徐宁一，等．松弛小功角约束条件的虚拟同步发电机功率解耦策略[J]．电力系统自动化，2018,42(9):59-68.Li Mingxuan,Wang Yue,Xu Ningyi,et al.Power decoupling strategy for virtual synchronous generator relaxing condition of small power angle[J].Automation of Electric Power Systems,2018,42(9):59-68(in Chinese).
• [17] Zhong Q C, Weiss G.Synchronverters:inverters that mimic synchronous generators[J]. IEEE Transactions on Industrial Electronics,2011,58(4):1259-1267.
• [18]许寅，王思家，吴翔宇，等．基于同步相量测量的配电网孤岛多源协同控制方法[J]．电网技术，2019,43(3):872-880.Xu Yin,Wang Sijia,Wu Xiangyu,et al.Multi-source coordinated control method based on PMU for islanded distribution network[J].Power System Technology,2019,43(3):872-880(in Chinese).
• [19]李武华，王金华，杨贺雅，等．虚拟同步发电机的功率动态耦合机理及同步频率谐振抑制策略[J]．中国电机工程学报，2017,37(2):381-390.Li Wuhua,Wang Jinhua,Yang Heya,et al.Power dynamic coupling mechanism and resonance suppression of synchronous frequency for virtual synchronous generators[J].Proceedings of the CSEE,2017,37(2):381-390(in Chinese).
• [20] Li W B,Wang J H,Song J Y,et al.Full-band output impedance model of virtual synchronous generator in dq framework[C]//2018International Power Electronics Conference.Niigata,Japan:IEEE,2018:1282-1288.
• [21]王兆安，李民，卓放．三相电路瞬时无功功率理论的研究[J]．电工技术学报，1992,7(3):55-59.Wang Zhaoan,Li Min,Zhuo Fang.A study on the theory of Instantaneous reactive power of three-phase circuits[J].Journal of Electrical Engineering and Technology, 1992, 7(3):55-59(in Chinese).