VSG结合无源型能量路由器及其在微网中的应用
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摘要
能量路由器可以作为统一接口组织分布式能源和负荷构成能源局域网,但由于电力电子装备无法提供传统同步电网中的惯性、阻尼和功率分配机制,降低了其并网友好性和运行可靠性。提出了一种具备虚拟惯量的能量路由器模型与控制方法,并研究了其组网运行方式,对其交流接口采用虚拟同步发电机(电动机)控制策略替代,对其直流接口采用无源控制(Passivity-based Control,PBC)策略,使能量路由器不仅具备惯性与阻尼特征,同时也可解决直流变换器的恒功率负载问题,并模拟电机特性实现功率调节机制,有助于增强接入电网的稳定性,仿真验证了所提组网方式和控制策略的有效性。
Energy router is one unified interface solution for organizing distributed energy resources and loads to energy local area network. However,power electronic equipment could not provide inertia,damping and power allocation like the traditional synchronous grid which leading the poor grid-tied integrity and reliability. This paper proposes an energy router and its network running mode. The control strategies of AC interface and DC interface are replaced by virtual synchronous generator( motor) and passivity-based control strategy. So the energy router can mimic the inertia,damping and power allocation characteristics of rotating motor to improve the stability of distributed power network,and the problem caused by constant power loads can also be solved. The simulation proves the effectiveness of the energy router running mode and the control strategy.
Energy router is one unified interface solution for organizing distributed energy resources and loads to energy local area network. However,power electronic equipment could not provide inertia,damping and power allocation like the traditional synchronous grid which leading the poor grid-tied integrity and reliability. This paper proposes an energy router and its network running mode. The control strategies of AC interface and DC interface are replaced by virtual synchronous generator( motor) and passivity-based control strategy. So the energy router can mimic the inertia,damping and power allocation characteristics of rotating motor to improve the stability of distributed power network,and the problem caused by constant power loads can also be solved. The simulation proves the effectiveness of the energy router running mode and the control strategy.
引文
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[17]XIN H H,ZHAO R,ZHANG L Q,et al.Adecentralized hierarchical control structure and self-optimizing control strategy for F-P type DGs in islanded microgrids[J].IEEE Transactions on Smart Grid,2016,7(1):3-5.
[18]吕志鹏,盛万兴,刘海涛,等.虚拟同步机技术在电力系统中的应用与挑战[J].中国电机工程学报,2017,37(2):349-359.LZhipeng,SHENG Wanxing,LIU Haitao,et al.Application and challenge of virtual machine synchronization technology in power system[J].Proceedings of the CSEE,2017,37(2):349-359.
[19]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.LZhipeng,SHENG Wanxing,ZHONG Qingcheng,et al.Virtual synchronous generator and its applications in micro-grid[J].Proceedings of the CSEE,2014,34(16):2591-2603.
[20]CUI J,WANG J H.Research on the influence of virtual damping in passivity-based controller on boost controller[C].Chinese Automation Congress,Jinan,2017.
[2]杨新法,苏剑,吕志鹏,等.微电网技术综述[J].中国电机工程学报,2014,34(1):57-70.YANG Xinfa,SU Jian,LZhipeng,et al.Overview on microgrid technology[J].Proceedings of the CSEE,2014,34(1):57-70.
[3]刘振亚.全球能源互联网[M].北京:中国电力出版社,2015.LIU Zhenya.Global energy internet[M].Beijing:China Electric Power Press,2015.
[4]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 of prospect of virtual synchronous generator technologies[J].Automation of Electric Power Systems,2015,39(21):165-175.
[5]郭慧,汪飞,张笠君,等.基于能量路由器的智能型分布式能源网络技术[J].中国电机工程学报,2016,36(12):3314-3324.GUO Hui,WANG Fei,ZHANG Yijun,et al.Technologies of energy router-based smart distributed energy network[J].Proceedings of the CSEE,2016,36(12):3314-3324.
[6]苗键强,张宁,康重庆.能量路由器对于配电网运行优化的影响分析[J].中国电机工程学报,2017,37(10):2832-2839.MIAN Jianqiang,ZHANG Ning,KANG Chongqing.Analysis of the influence of energy routers on the operation optimization of distribution network[J].Proceedings of the CSEE,2017,37(10):2832-2839.
[7]ZHOU X S,WANG F Z,MA Y J.An overview on energy internet[C]//Proceedings of the 2015 IEEE International Conference on Mechatronics and Automation(ICMA).Beijing,China:IEEE,2015:126-131.
[8]BIFARETTI S,ZANCHETTA P,WATSON A,et al.Advanced power electronic conversion and control system for universal and flexible power management[J].IEEE Transactions on Smart Grid,2011,2(2):231-243.
[9]GUILLOD T,HUBER J,ORTIZ G,et al.Characterization of the voltage and electric field stresses in multicell solid-state transformers[C].Proceedings of the IEEE Energy Conversion Congress and Exposition,2014:4726-4734.
[10]BOYD J.An internet-inspired electricity grid[J].IEEE Spectrum,2013,50(1):12-14.
[11]吕志鹏,郭育华,刘岚,等.基于虚拟同步发电机的微网逆变器设计[J].电力电子技术,2016,50(12):106-108.LZhipeng,GUO Yuhua,LIU Lan,et al.Design of microgrid inverter based on virtual synchronous generator[J].Power Electronic Technology,2016,50(12):106-108.
[12]兰征,涂春鸣,肖凡,等.电力电子变压器对交直流混合微网功率控制的研究[J].电工技术学报,2015,30(23):50-57.LAN Zheng,TU Chunming,XIAO Fan,et al.Power electronic transformer of AC/DC hybrid microgrid power control[J].Transactions of China Electrotechnical Society,2015,30(23):50-57.
[13]吴恒,阮新波,杨东升,等.虚拟同步发电机功率环的建模与参数设计[J].中国电机工程学报,2015,35(24):6508-6518.WU Heng,RUAN Xinbo,YANG Dongsheng,et al.Modeling and parameter design of virtual synchronous generator power ring[J].Proceedings of the CSEE,2015,35(24):6508-6518.
[14]赵彪,宋强,刘文华,等.用于柔性直流配电的高频链直流固态变压器[J].中国电机工程学报,2014,34(25):4295-4303.ZHAO Biao,SONG Qiang,LIU Wenhua,et al.High frequency DC solid state transformer for flexible DC distribution[J].Proceedings of the CSEE,2014,34(25):4295-4304.
[15]HUANG A.FREEDM system-a vision for the future grid[C]//IEEE Power&Energy Society General Meeting,IEEE,2010:1-4.
[16]MAINALI K,TRIPATHI A,MADHUSOODHANAN S,et al.A transformer less intelligent power substation:a three-phase SST enabled by a 15k V Si C IGBT[J].IEEE Power Electronics Magazine,2015,2(3):31-43.
[17]XIN H H,ZHAO R,ZHANG L Q,et al.Adecentralized hierarchical control structure and self-optimizing control strategy for F-P type DGs in islanded microgrids[J].IEEE Transactions on Smart Grid,2016,7(1):3-5.
[18]吕志鹏,盛万兴,刘海涛,等.虚拟同步机技术在电力系统中的应用与挑战[J].中国电机工程学报,2017,37(2):349-359.LZhipeng,SHENG Wanxing,LIU Haitao,et al.Application and challenge of virtual machine synchronization technology in power system[J].Proceedings of the CSEE,2017,37(2):349-359.
[19]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.LZhipeng,SHENG Wanxing,ZHONG Qingcheng,et al.Virtual synchronous generator and its applications in micro-grid[J].Proceedings of the CSEE,2014,34(16):2591-2603.
[20]CUI J,WANG J H.Research on the influence of virtual damping in passivity-based controller on boost controller[C].Chinese Automation Congress,Jinan,2017.