面向数据中心的高品质供电研究
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摘要
数据中心现有供电方案一般需经过AC/DC和DC/AC 2次变换,同时不间断电源一般需通过逆变器为负载供电,其供电可靠性和供电质量有待进一步提高,为此提出一种面向数据中心的高品质供电方案。首先给出方案的拓扑结构,在此基础上分析了方案的工作原理及数学模型,并提出一种基于电压补偿、双电源功率均衡和紧急供电的协调控制策略,在MATLAB/Simulink中对面向数据中心高品质供电方案进行了仿真验证。研究结果表明,所提方案能够很好地补偿电网电压的暂升、暂降和谐波干扰等,实现双电源功率协调分配,保障双电源停电时的不间断供电。
The existing power-supply scheme for data center normally needs both AC/DC and DC/AC conversions while the uninterrupted power-supply normally needs the inverter to supply power for loads.A high-quality power-supply scheme is proposed to improve its reliability and quality. The topological structure of the proposed scheme is given,based on which,its working principle and mathematical model are analyzed. A coordinated control strategy based on voltage compensation control,power balance between two power sources and emergency power-supply is presented and verified based on MATLAB/Simulink. The research results show that,the proposed scheme compensates the voltage swell,voltage sag and harmonics of power grid very well,realizes the power balance between two power sources,and maintains the uninterrupted power-supply during the outage of both power sources.
The existing power-supply scheme for data center normally needs both AC/DC and DC/AC conversions while the uninterrupted power-supply normally needs the inverter to supply power for loads.A high-quality power-supply scheme is proposed to improve its reliability and quality. The topological structure of the proposed scheme is given,based on which,its working principle and mathematical model are analyzed. A coordinated control strategy based on voltage compensation control,power balance between two power sources and emergency power-supply is presented and verified based on MATLAB/Simulink. The research results show that,the proposed scheme compensates the voltage swell,voltage sag and harmonics of power grid very well,realizes the power balance between two power sources,and maintains the uninterrupted power-supply during the outage of both power sources.
引文
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[14]马宏伟,李永东,郑泽东,等.一种PWM整流器的模型预测控制方法[J].电力自动化设备,2013,33(11):21-25.MA Hongwei,LI Yongdong,ZHENG Zedong,et al.Model predictive control of PWM rectifier[J].Electric Power Automation Equipment,2013,33(11):21-25.
[15]李娟,严宇昕,聂鹏,等.电压注入型DCIPC中VSC的控制方式及运行特性仿真研究[J].电工电能新技术,2015,34(11):37-42.LI Juan,YAN Yuxin,NIE Peng,et al.Modeling and simulation of VSC in DCIPC with voltage injection[J].Advanced Technology of Electrical Engineering and Energy,2015,34(11):37-42.
[16]朱韬析,武诚,王超.交流系统故障对直流输电系统的影响及改进建议[J].电力系统自动化,2009,33(1):93-98.ZHU Taoxi,WU Cheng,WANG Chao.Influence of AC system fault on HVDC system and improvement suggestions[J].Automation of Electric Power Systems,2009,33(1):93-98.
[17]马艺玮,杨苹,吴捷.含多分布式电源独立微电网的混合控制策略[J].电力系统自动化,2015,39(11):103-109.MA Yiwei,YANG Ping,WU Jie.Hybrid control strategy of islanded microgrid with numerous distributed generators[J].Automation of Electric Power Systems,2015,39(11):103-109.
[18]PAN C T,LIAO Y H.Modeling and coordinate control of circulating currents in parallel three-phase Boost rectifiers[J].IEEE Transactions on Industrial Electronics,2007,54(7):825-838.
[19]赵祖熠,解大,楚皓翔,等.基于储能系统的双馈风电机组机网扭振抑制策略[J].电力自动化设备,2016,36(8):33-39.ZHAO Zuyi,XIE Da,CHU Haoxiang,et al.Generator-grid torsional vibration suppression for DFIG system with ESS[J].Electric Power Automation Equipment,2016,36(8):33-39.
[2]程哲昕,陆振华,叶海东.数据中心UPS供电系统研究[J].建筑电气,2014(5):57-62.CHENG Zhexin,LU Zhenhua,YE Haidong.Research on UPS systems of data center[J].Building Electricity,2014(5):57-62.
[3]宫俊峰.通信交流设备不间断供电的比较[J].通信电源技术,2012,29(5):78-80.GONG Junfeng.The comparison of uninterrupted power supply for communication equipment[J].Communication Power Supply Technology,2012,29(5):78-80.
[4]王力坚.谐波干扰问题及解决方法和直流UPS供电的推广应用[J].智能建筑与城市信息,2010,163(6):31-34.WANG Lijian.The problem and solving method of harmonic interference and the promotion of the DC UPS power supply[J].Intelligent Building and City Information,2010,163(6):31-34.
[5]黄威.大型数据中心谐波治理方案的研究[D].上海:上海交通大学,2011.HUANG Wei.The research of harmonic filtration of large data center[D].Shanghai:Shanghai Jiao Tong University,2011.
[6]李天友,赵会茹,欧大昌,等.短时停电及其经济损失的估算[J].电力系统自动化,2012,36(20):59-62.LI Tianyou,ZHAO Huiru,OU Dachang,et al.Short interruption and its cost appraisal[J].Automation of Electric Power Systems,2012,36(20):59-62.
[7]贾东强,韦统振,霍群海.新型分散式电能质量调节器运行研究[J].电工技术学报,2013,28(2):256-261.JIA Dongqiang,WEI Tongzhen,HUO Qunhai.Research on operation of new scattered power quality conditioner[J].Transactions of China Electrotechnical Society,2013,28(2):256-261.
[8]刘海波,毛承雄,陆继明,等.双电源备用供电型通用潮流控制器[J].高电压技术,2007,33(5):94-98.LIU Haibo,MAO Chengxiong,LU Jiming,et al.Dual-powersupply backup supply type generalized power flow controller[J].High Voltage Engineering,2007,33(5):94-98.
[9]CUI Yutian,XU Fan,ZHANG Weimin,et al.High efficiency data center power supply using wide band gap power devices[C]∥2014 Twenty-Ninth Annual IEEE Applied Power Electronics Conference and Exposition(APEC).Fort Worth,TX,USA:IEEE,2014:3437-3442.
[10]刘文军,唐西胜,周龙,等.基于飞轮储能系统的直流UPS控制方法研究[J].电工电能新技术,2014,33(10):16-22.LIU Wenjun,TANG Xisheng,ZHOU Long,et al.Research on control method of FESS based DC UPS[J].Advanced Technology of Electrical Engineering and Energy,2014,33(10):16-22.
[11]吴凤江,孙秀冬,孙力,等.电网功率可控型太阳能电池-电网-蓄电池混合供电不间断逆变电源[J].电力自动化设备,2011,31(6):11-15.WU Fengjiang,SUN Xiudong,SUN Li,et al.Grid-power-controllable UPS powered by photovoltaic cell,grid and battery[J].Electric Power Automation Equipment,2011,31(6):11-15.
[12]周稳,戴瑜兴,毕大强,等.交直流混合微电网协同控制策略[J].电力自动化设备,2015,35(10):51-57.ZHOU Wen,DAI Yuxing,BI Daqiang,et al.Coordinative control strategy for hybrid AC-DC microgrid[J].Electric Power Automation Equipment,2015,35(10):51-57.
[13]黄力.基于三单相H桥的动态电压调节器的研究[D].武汉:华中科技大学,2011.HUANG Li.Research on dynamic voltage restorer based on three single-phase H bridge[D].Wuhan:Huazhong University of Science and Technology,2011.
[14]马宏伟,李永东,郑泽东,等.一种PWM整流器的模型预测控制方法[J].电力自动化设备,2013,33(11):21-25.MA Hongwei,LI Yongdong,ZHENG Zedong,et al.Model predictive control of PWM rectifier[J].Electric Power Automation Equipment,2013,33(11):21-25.
[15]李娟,严宇昕,聂鹏,等.电压注入型DCIPC中VSC的控制方式及运行特性仿真研究[J].电工电能新技术,2015,34(11):37-42.LI Juan,YAN Yuxin,NIE Peng,et al.Modeling and simulation of VSC in DCIPC with voltage injection[J].Advanced Technology of Electrical Engineering and Energy,2015,34(11):37-42.
[16]朱韬析,武诚,王超.交流系统故障对直流输电系统的影响及改进建议[J].电力系统自动化,2009,33(1):93-98.ZHU Taoxi,WU Cheng,WANG Chao.Influence of AC system fault on HVDC system and improvement suggestions[J].Automation of Electric Power Systems,2009,33(1):93-98.
[17]马艺玮,杨苹,吴捷.含多分布式电源独立微电网的混合控制策略[J].电力系统自动化,2015,39(11):103-109.MA Yiwei,YANG Ping,WU Jie.Hybrid control strategy of islanded microgrid with numerous distributed generators[J].Automation of Electric Power Systems,2015,39(11):103-109.
[18]PAN C T,LIAO Y H.Modeling and coordinate control of circulating currents in parallel three-phase Boost rectifiers[J].IEEE Transactions on Industrial Electronics,2007,54(7):825-838.
[19]赵祖熠,解大,楚皓翔,等.基于储能系统的双馈风电机组机网扭振抑制策略[J].电力自动化设备,2016,36(8):33-39.ZHAO Zuyi,XIE Da,CHU Haoxiang,et al.Generator-grid torsional vibration suppression for DFIG system with ESS[J].Electric Power Automation Equipment,2016,36(8):33-39.
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