黄莉,孙淑莲
HUANG Li,SUN Shulian

• 1:浙江同济科技职业学院机电系
• 2:国网浙江省电力公司杭州供电公司

摘要(Abstract)：

对直流微电网母线电压稳定进行了控制策略的探讨和仿真研究。对微电网的结构进行建模,在此基础上进行关键设备变换器的设计,并采取合适的控制策略。根据直流微电网电压和功率之间的关系,提出了一种基于电压偏移量的分层控制策略,通过检测电压偏移量决定系统的运行层区及采取相应的稳压措施。最后利用matlab/simulink软件对控制策略的效果进行仿真分析。结果表明,系统能承受负载投切冲击、光伏功率突卸和运行模式切换等干扰,维持母线电压稳定和系统的安全运行。
The control strategy of bus voltage stability in DC microgrid is investigated and simulated. The structure of the microgrid is modeled; besides, key device converters are designed and the appropriate control strategy is adopted. According to the relationship between voltage and power of DC microgrid, a hierarchical control strategy based on voltage deviation is proposed, which determines the system operating layer and takes the corresponding voltage stabilization measures by detecting the voltage deviation. At last, the effect of the control strategy is simulated and analyzed by using Matlab/Simulink. The result shows that the system can withstand disturbances such as load switching impulse, sudden photovoltaic power discharge and operation mode switching so as to maintain the stability of the bus voltage and the operation safety of the system.

关键词(KeyWords)： 直流微电网;电压稳定;变换器;分层控制策略;仿真分析
DC microgrid;voltage stability;converter;hierarchical control strategy;simulation analysis

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 黄莉,孙淑莲
HUANG Li,SUN Shulian

DOI: 10.19585/j.zjdl.2016.05.002

参考文献(References)：

• [1]鲁宗相,王彩霞,闵勇,等.微电网研究综述[J].电力系统自动化,2007,31(19):101-102.
• [2]赵宏伟,吴涛涛.基于分布式电源的微网技术[J].电力系统及其自动化学报,2008,20(1):121-128.
• [3]H KAKIGANO,Y MIURA,T ISE,R UCHIDA.DC Microgrid for Super High Quality Distribution System Configuration and Control of Distributed Generations and Energy Storage Devices[J].37th Annual IEEE Power Electronics Specialists Conference,Korea,2006:3148-3154.
• [4]H KAKIGANO,Y MIURA,T ISE,IL UCHIDA.DC Voltage Control of the DC Microgrid for Super High Quality Distribution[C].The Fourth Power Conversion Conference,Japan,2007:518-525.
• [5]LIN Y F,ZHONG J.Converter controller design methods for wind turbine systems in the DC microgrid[C]//Powerand Energy Society General Meeting Conversion and Delivery of Electrical Energy in the 21st Century,Pittsburgh:IEEE,2008:1-6.
• [6]CHEN D,XU L.Autonomous DC voltage control of a DCmicrogrid with multiple slack terminals[J].Power Systems,IEEE Transactions on,2012,27(4):1897-1905.
• [7]Sandeep Anand,Baylon G,Fernandes,et al.Distributed control to ensure proportional load sharing and improve voltage regulation in low-voltage DC microgrid[J].Power Electronics,IEEE.
• [8]郝雨辰,吴在军,窦晓波,等.多代理系统在直流微网稳定控制中的应用[J].中国电机工程学报,2012,32(25):27-35.
• [9]施婕,郑漳华,艾芊.直流微电网建模与稳定性分析[J].电力自动化设备,2010(2):86-90.
• [10]ITO Y,YANG Z,AKAGI H.DC microgrid based distribution power generation system[C]//Proceedings of IEEEConference on International Power Electronics and Motion Contr01.Xi’an,China:Power Electronics Society,2004:1740-1745.