许崇福;李菀茹;徐宁一;王弋飞;刘永慧;宁改娣;王跃;

• 1:西安西电电气研究院有限责任公司
• 2:西安交通大学电气工程学院
• 3:国网宁波供电公司

摘要(Abstract)：

针对使用虚拟同步发电机策略控制储能变流器时,孤岛微电网中采用常数阻尼系数控制会导致稳态有功功率偏差的问题,首先建立了基于虚拟同步发电机控制的储能变流器小信号模型,分析了并网模式和孤岛模式下阻尼系数对有功功率振荡的影响规律,然后提出了一种改进的基于稳态频率差值补偿的阻尼控制方法。之后研究了改进阻尼控制对系统稳定性和动态特性的影响,通过仿真和实验验证了改进的阻尼控制可以解除阻尼对稳态有功下垂特性的影响,在保证不影响稳态有功功率分配的前提下有效抑制系统振荡。

关键词(KeyWords)： 储能变流器;虚拟同步发电机;阻尼系数;小信号模型;功率分配

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51777159);; 中央高校基本科研业务费专项资金项目(xzy022019035)~~

作者(Author): 许崇福;李菀茹;徐宁一;王弋飞;刘永慧;宁改娣;王跃;

Email:

DOI: 10.13335/j.1000-3673.pst.2019.0515

参考文献(References)：

• [1] Lasseter R H, Piagi P. Control and design of microgrid components[R].Madison,Wisconsin:Power Systems Engineering Research Center,2006.
• [2] Chandorkar M C,Divan D M,Adapa R.Control of parallel connected inverters in standalone AC supply systems[J].IEEE Transactions on Industry Applications,1993,29(1):136-143.
• [3]桑丙玉，王德顺，杨波，等．平滑新能源输出波动的储能优化配置方法[J]．中国电机工程学报，2014,34(22):3700-3706.Sang Bingyu,Wang Deshun,Yang Bo,et al.Optimal allocation method of energy storage for smoothing fluctuation of new energy output[J].Proceedings of the CSEE,2014,34(22):3700-3706(in Chinese).
• [4]胡安平，杨波，潘鹏鹏，等．基于电力电子接口的储能系统惯性特征研究[J]．中国电机工程学报，2018,38(17):4999-5008,5297.Hu Anping,Yang Bo,Pan Pengpeng,et al.Inertial characteristics of energy storage system based on power electronic interface[J].Proceedings of the CSEE,2018,38(17):4999-5008,5297(in Chinese).
• [5] Driesen J,Visscher K.Virtual synchronous generators[C]//the 9th International Conference on Electrical Power Quality and Utilisation.Barcelona.Spain:IEEE,2007:1-6.
• [6] Zhong Q C, Weiss G. Synchronverters:inverters that mimic synchronous generators[J]. IEEE Transactions on Industrial Electronics,2011,58(4):1259-1267.
• [7] Hans-Peter B,Hesse R.Virtual synchronous machine[C]//the 9th International Conference on Electrical Power Quality and Utilisation.Barcelona,Spain:IEEE,2007:9-11.
• [8] Doolla N S,Chandorkar M C.Improvement of transient response in microgrids using virtual inertia[J]. IEEE Transactions on Power Delivery,2013,28(3):1830-1838.
• [9] Cvetkovic I,Boroyevich D,Burgos R,et al.Modeling of a virtual synchronous machine-based gridinterface converter for renewable energy systems integration[C]//Control and Modeling for Power Electronics.Santander,Spain:IEEE,2014:1-7.
• [10]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):381-391.Li Wuhua,Wang Jinhua,Yang Heya,et al.Power dynamic coupling mechanism of virtual synchronous generator and synchronous frequency resonance suppression strategy[J]. Proceedings of the CSEE,2017,37(2):381-391(in Chinese).
• [11] Wang Z,Zhuo F,Wu J,et al.Inertia time constant design in microgrids with multiple paralleled virtual synchronous generators[C]//European Conference on Power Electronics and Applications.Warsaw,Poland:IEEE,2017:1-9.
• [12]杜威，姜齐荣，陈蛟瑞．微电网电源的虚拟惯性频率控制策略[J]．电力系统自动化，2011,35(23):26-31.Du Wei,Jiang Qirong,Chen Jiaorui.Virtual inertial frequency control strategy for microgrid power supply[J].Automation of Electric Power Systems,2011,35(23):26-31(in Chinese).
• [13]王思耕，葛宝明，毕大强．基于虚拟同步发电机的风电场并网控制研究[J]．电力系统保护与控制，2011,39(21):49-54.Wang Sigeng,Ge Baoming,Bi Daqiang.Research on grid-connected control of wind farm based on virtual synchronous generator[J].Power System Protection and Control,2011,39(21):49-54(in Chinese).
• [14] Chen Y,Hesse R,Turschner D,et al.Improving the grid power quality using virtual synchronous machines[C]//2011 International Conference on Power Engineering, Energy and Electrical Drives.Malaga.Spain:IEEE,2011:1-6,11-13.
• [15]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 application in microgrid[J].Proceedings of the CSEE,2014,34(16):2591-2603(in Chinese).
• [16] Du Y,Su J,Mao M,et al.Autonomous controller based on synchronous generator dq0 model for micro grid inverters[C]//IEEE International Conference on Power Electronics&Ecce Asia.Jeju,Korea:IEEE,2011:2645-2649.
• [17] Mohamed A R I,Radwan A A.Hierarchical control system for robust microgrid operation and seamless mode transfer in active distribution systems[J].IEEE Transactions on Smart Grid,2011,2(2):352-362.
• [18]李明烜，王跃，徐宁一，等．基于带通阻尼功率反馈的虚拟同步发电机控制策略[J]．电工技术学报，2018,33(10):2176-2185.Li Mingxuan,Wang Yue,Xu Ningyi,et al.Control strategy of virtual synchronous generator based on band-pass damped power feedback[J].Transactions of China Electrotechnical Society,2018,33(10):2176-2185(in Chinese).
• [19]李新，刘国梁，杨苒晨，等．具有暂态阻尼特性的虚拟同步发电机控制策略及无缝切换方法[J]．电网技术，2018,42(7):2081-2088.Li Xin,Liu Guoliang,Yang Ranchen,et al.Control strategy and seamless switching method of virtual synchronous generator with transient damping characteristics[J].Power System Technology,2018,42(7):2081-2088(in Chinese).
• [20]颜湘武，贾焦心．VSG一次调频和转速振荡阻尼的解耦控制方案[J]．电网技术，2019,43(5):1566-1574.Yan Xiangwu,Jia Jiaoxin.Decoupling control of primary frequency regulation and rotational speed damping of VSG[J].Power System Technology,2019,43(5):1566-1574(in Chinese).
• [21] He J,Li Y W.Analysis, design, and implementation of virtual impedance for power electronics interfaced distributed generation[J].IEEE Transactions on Industry Applications,2011,47(6):2525-2538.