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ZHANG Jianwei,YANG Zaixin,WANG Yunhui,LIU Guangchen
Abstract:In order to alleviate the intensive computational burden in the model predictive contro(l MPC)of the matrix converter,the MPC of the matrix converter was divided into the predictive control of the virtual rectifier and virtual inverter based on the equivalent indirect modulation of the matrix converter. Com...
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Number of views:1480 Amount of downloads:4439
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CHEN Biao,HAN Zhongxiu,MA Liqiang,ZHANG Renhe
Abstract:The back-to-back active neutral-point-clamped(ANPC)converter,as the core component of theunified power flow controller of the distribution network,is widely used for the flexible closed-loop operation.However,the ANPC converter has more switching devices and commutation paths,which significantly increasesth...
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Number of views:1476 Amount of downloads:5032
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JIN Dan,ZHI Jing,XIN Shijin,YANG Jian,HUANG Yafei,XU Qing
Abstract:Voltage source converter(VSC)connected to weak AC power grid has the risk of small disturbanceinstability. Under the traditional control strategy,VSC has to reduce output power to maintain stable operation. Inorder to improve the stability of the weak grid connected VSC system,first established a universal ...
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Number of views:1475 Amount of downloads:4682
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JIANG Yang,CHEN Zhong,WU Yongkang
Abstract:The permanent magnet synchronous generator(PMSG)is prone to current overstep in unbalancedgrid,which affects the reliability of grid-connected system. To solve this problem,low-voltage ride-throgh controlstrategy based on direct power control was proposed. In this strategy,the direct power inner loop was us...
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Number of views:1469 Amount of downloads:3825
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YUAN Yisheng,HUANG Yikun,CAO Hui,HUANG Zhimin
Abstract:A bidirectional isolated resonant converter with variable mode and wide voltage range wasproposed. The proposed converter has the advantages of BOOST circuit and flyback current feed topology. Byreusing the pre-storage and flyback energy feedback of the resonant inductor,it can improve the gain from thebatt...
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Number of views:1469 Amount of downloads:4682
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PENG Fei,TIAN Xu,LIU Fei,XU Decao,FANG Shiwen,TIAN Xu
Abstract:The integration of large-scale wind power,photovoltaic and other renewable energy resources forthe power system will greatly change the power supply characteristics,reducing the inertia of power system andthreatening the stability of transient frequency. The virtual synchronous generator(VSG)technology can ...
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Number of views:1464 Amount of downloads:4606
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ZHAO Fajin,SHU Zhengyu,WANG Can,LIU Wencan ,HUANG Qiyun
Abstract:Accurate and efficient multi-load forecasting is of great significance for the operation control andscheduling of integrated energy system(IES),in order to improve the load forecasting effect,a integrated energysystem load prediction model based on least absolute shrinkage and selection operator(LASSO)and L...
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Number of views:1461 Amount of downloads:3636
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SUN Heyu,JI Baowei,WEI Yushan,FANG Weihan,WANG Yangyang
Abstract:In response to the problem of slow response speed of main steam pressure in the coordinated controlsystem of thermal power units,the control effect of the coordinated control system was improved by blowing outsome of the stored powder in the pulverizing system. Based on the traditional milling system model,...
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Number of views:1449 Amount of downloads:3665
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XIE Jijin,HUANG Wendong,SHEN Kang,LIU Bin,MENG Ningjia,ZHANG Yuanyuan
Abstract:In order to improve the compensation effect of LCL-type shunt active power filter,a frequencyadaptive decimal delay repetitive control based on IIR filter was proposed. The resonance suppression loop of LCLwas designed through root locus and the design result was used as a new control object for repetitive ...
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Number of views:1448 Amount of downloads:4622
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YANG Yan,LIU Tong,JIN Panlong,QI Caijuan
Abstract:In order to solve the problem that the time-of-use price is not taken into account in the calculation ofthe peaking cost in the case of a large number of renewable energy sources,a method of calculating the peakingcost of power system with time-of-use price was proposed. First,the key scenarios of power gri...
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Number of views:1448 Amount of downloads:3880
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CHEN Sisi,LI Zhigang,ZHENG Jiehui
Abstract:The energy flow analysis method with both high precision and high computational efficiency is abasic tool to simulate the operation and analyze the interaction between the thermal and electric coupling systems.The traditional iterative numerical method is slow in computation,poor in computability for large-...
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Number of views:1446 Amount of downloads:4745
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CHEN Chen,DONG Pingxian,SONG Xiaofan,GUO Fang,QI Huanruo,DU Xiaotong
Abstract:After the distributed wind farm stations are integrated into the distribution network,due to thecharacteristics of wind farm short-circuit current amplitude control and frequency offset,the traditional three-stagecurrent protection of distribution network is difficult to accurately identify the fault on the...
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Number of views:1443 Amount of downloads:3686
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ZHAO Weicheng,MA Haoyuan,HUANG Jinming,CAO Xin,KE Xingsi
Abstract:Voltage source converter(VSC)working as the interface of new energy stations connects to urbanmain network with long-distance AC line,which results a weak grid connected condition and has a risk of DCvoltage instability. To analyze the mechanism of DC voltage instability of weak grid connected VSC,a DC volt...
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Number of views:1440 Amount of downloads:7791
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LEI Aoyu ,LI Jun ,MEI Yong ,TONG Ning ,WANG Yu ,WU Wei
Abstract:The stability analysis of power system transient voltage,power angle,and frequency is often basedon short-time-scale electromechanical transient simulation,which requires a relatively accurate large-scalesimulation model,which not only has low simulation efficiency but also takes a long time,thus giving ris...
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Number of views:1439 Amount of downloads:3856
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CHEN Yong,LI Jianbiao,CHEN Jianfu,PEI Xingyu,WU Hongyuan,HUANG Chunyu
Abstract:The characteristics of the DC side of the DC distribution network are multi bus cascades,multipleconverters,and strong coupling of the buses,which can easily cause harmonic resonance and threaten the safeoperation of system equipment.Aims at the problem of unclear resonance interaction and harmonic transmis...
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Number of views:1434 Amount of downloads:3836