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TANG Junyi,DONG Xuetao,QIN Yanhui
Abstract: The large-scale grid connection of renewable energy with strong randomness and volatility and thenet load fluctuation caused by time sequence put forward higher requirements for the operation flexibility of powersystem. In order to quantitatively evaluate the operation flexibility capacity of power system,...
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Number of views:1079 Amount of downloads:985
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YUAN Shaowei,LI Yuxiang,JIANG Jie,ZHANG Bei,ZHU Qing
Abstract:In order to solve the problems of intermittent and fluctuating distributed energy,took three majorphysical entities in the demand response project,namely system operator,load aggregator and load end user,as the research object,the transactions between supply and demand within the power system composed by the...
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Number of views:962 Amount of downloads:984
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LÜ Jin,XU Li,SUI Dawei,GAO Qixin,XU Deshu
Abstract: With the rapid development of China's industrial economy,the demand for strip materials isincreasing,and the construction of strip production lines both domestically and internationally is growing year byyear. However,the complexity of large-scale rolling mill systems and the harsh working environment ...
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Number of views:934 Amount of downloads:980
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LIU Zhijian,ZI Chao,LI Pengcheng,GUO Cheng,LIU Jie,HUANG Wei
Abstract: Aiming at ultra-low frequency oscillation in power system caused by hydraulic turbine governingsystem,an additional damping control strategy for governing side was developed. Firstly,according to the damping torque method,the negative damping generated by the hydraulic turbine governing system was regarded...
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Number of views:1091 Amount of downloads:979
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JI Liang,XU Jun,GUAN Ya,CUI Jingxia,HE Jie,PAN Yihang
Abstract:The three-core underground cable in the distribution network works in a harsh environment. Due tothe influence of aging,external force,high temperature and humidity,the insulation of long-term live operation iseasily damaged and causes faults. Aiming at the single-phase grounding fault of cable in distribut...
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Number of views:563 Amount of downloads:974
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SHI Xuelei
Abstract:Under the power grid dispatch mode of "source follows load",different AC power supply modes arerequired in the market. To meet market demand,an uninterruptible power supply(UPS)system compatible withvarious AC power supply modes was designed. The modes of the system were selected by switching devices.Accord...
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Number of views:997 Amount of downloads:974
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CHI Yuhang,ZHAO Lu,GE Qiongxuan,LIU Xue,CHENG Shi
Abstract:Taking the switch tube open-circuit fault of dual bridge series resonant DC-DC converter(DBSRC)as the research object. Firstly,the basic working principle of DBSRC was summarized,and the open circuit faultcharacteristics of DBSRC converter were introduced. On this basis,the fault characteristics that can be...
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Number of views:453 Amount of downloads:966
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FENG Kan,ZHANG Lezhen,ZHOU Long,HOU Yanlun,NIU Wei,BAO Chengjia
Abstract:An improved virtual impedance strategy with adaptive reactive power equalisation and bus voltagecompensation functions was proposed to address the reactive power equalisation and bus voltage drop issues inparallel inverters in island microgrids. By introducing an enhanced power decoupling strategy based on ...
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Number of views:318 Amount of downloads:964
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LUO Huanliang,WANG Zaixiang,LI Yesong
Abstract:Aimed at the issues of deadbeat direct torque and flux control strategy(DB-DTFC)such as relyingon the accurate motor model,high computational load,and coupling between torque and flux,a simplified strategy of DB-DTFC for permanent magnet synchronous motor which based on flux planning was proposed. Firstly,p...
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Number of views:634 Amount of downloads:961
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DENG Jiahao,LIN Lingxue,ZHU Lin,WU Zilong
Abstract:Up to now,the distribution network planning project optimization method rarely considered theimpact of the speed of load growth on the power supply efficiency of the project and the year when the project isselected,and rarely considered the urgency,technical benefit and economic benefit of the project at th...
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Number of views:1003 Amount of downloads:956
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XU Deshu,LIU Yanfang,ZHAO Hao,MA Zhiqiang
Abstract:The integrated energy system contains adjustable resources and flexible operating modes,which to acertain extent play a supporting role in the power grid and assist in optimizing its operation. Based on this,anoptimal operation model of integrated energy system considering support capacity to power grid was...
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Number of views:608 Amount of downloads:953
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CUI Yulu,SHANG Xingming,QIAN Xin,TONG Xiaoqing,ZHANG Zhiguo
Abstract:In response to the susceptibility of wind storage DC building microgrid systems to externalinterference,the DC bus is prone to instability during multi-mode switching and high-power load switching,posing a serious threat to the safe and reliable operation of electrical equipment. A large-signal simplified m...
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Number of views:340 Amount of downloads:952
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WANG Yanjie,LIN Chaobin,XU Guozhi,LI Qingyao,ZHANG Zhenye,HU Kun
Abstract:To adapt to the construction of a novel power system with new energy as the main body,it isnecessary to continuously improve the new energy consumption capacity of various voltage-level power grids.Through the research on the influencing factors and improvement methods of new energy consumption capacity ofd...
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Number of views:947 Amount of downloads:950
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LÜ Zhengyu,ZHOU Liang
Abstract: In the process of controlling the voltage of active distribution network,there are problems of poorvoltage control effect and low efficiency. A two-stage automatic voltage control method of active distributionnetwork considering load measurement was proposed. Using the probability density function (PDF) cu...
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Number of views:1174 Amount of downloads:949
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LI Gang,XU Bin,WANG Xiaoming,ZHAO Wenguang,FANG Zhao,WU Hongbin
Abstract: The distributed control strategy of the distribution network with distributed generation is expected tosolve the voltage control problem of the distribution network. However,distributed generation are loosely distributed in space,and communication problems such as communication delay and packet loss betwee...
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Number of views:938 Amount of downloads:948