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ZHANG Jun,GONG Min,ZHOU Yi,XIE June,CAO Lei,LIU Yingying
Abstract:In traditional current protection,the effective value of current is compared with the setting value toidentify the fault which is the typical protection scheme for the transmission lines of the power distribution systems.The current is calculated by the fast Fourier transform algorithm. As the calculation o...
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Number of views:2535 Amount of downloads:6573
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ZHOU Yi,FANG Wei,GONG Min,XIA Xuesong,CHEN Yanling,HAN Ni
Abstract:Despite bringing several benefits to modern power systems,distributed generation(DG)andmicrogrids cause a significant impact on the operation of power distribution networks,especially with regard to theprotection system. In this new scenario,the adoption of smart protection systems capable of incorporating ...
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Number of views:1974 Amount of downloads:6552
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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:2104 Amount of downloads:6548
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JIANG Jingwen,ZHOU Jiemin,HONG Feng,ZHENG Gang
Abstract: On the basis of LLC,considering from the perspectives of soft-switching technology,DC/DCcascade converter technology and three-level technology,a new DC/DC composite cascade structure topology onthe basis of Buck-LLC structure was proposed. A 980 W prototype was designed and built for verification,whichpro...
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Number of views:2402 Amount of downloads:6530
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KAN Chaohao,YAO Xiaojian,QI Ankang,WANG Zhisheng, WANG Pengcheng,CHEN Gong
Abstract:Three-phase asynchronous motor is one of the most frequently used motors. Inter-turn short circuitfault is a kind of fault with high probability. If the real-time monitoring of motor operation,health and safetyevaluation of the operation,will be able to timely stop losses,reduce losses. An inter-turn fault ...
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Number of views:1863 Amount of downloads:6515
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JIANG Xuejiao,ZHANG Changqing,QIN Gang,ZHONG Lei,ZHOU Chaojun,CHEN Yupei
Abstract:In order to balance the output difference between renewable energy and load in the activedistribution network and reduce the budget cost and user purchase cost,an optimal dispatching method ofdistributed generation units in the active distribution network based on power demand side response was proposed.On ...
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Number of views:2109 Amount of downloads:6507
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PENGTao
Abstract: The local leakage signal of high-voltage insulation equipment is weak and its characteristics are notobvious,which can only explain whether there is discharge. There is a phenomenon of missing judgment andmisjudgment in the actual positioning process,which is difficult to accurately locate the high-voltage...
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Number of views:2415 Amount of downloads:6506
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WANG Chengliang,PAN Zhixin,ZHAI Xuefeng,XIAO Yuhua,LIU Yu
Abstract: The mathematical model of magnetic coupled resonant wireless power transfer(MCR-WPT)system based on LCC-S compensation topology was established. Meanwhile,the influence on the transmissionperformance of the system was analyzed from three aspects:operating frequency,compensating inductance andload impedance...
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Number of views:3445 Amount of downloads:6502
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SUN Jia,HAN Shuntian,NI Lianghua,LÜ Ganyun
Abstract:While a large number of distributed generator(DG)keep penetrating into distribution networks,the problems such as voltage violation and network power congestion become more and more serious. Soft open point (SOP)can quickly achieve flexible interconnection and accurate power flow control,effectively address...
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Number of views:2323 Amount of downloads:6500
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PENG Yanlai,FAN Yong,YANG Xiaofeng,YANG Hongyu,WANG Zhixin
Abstract: Aiming at the problems that the amount of data in wind farm SCADA data is huge and it is difficultto classify the fast fault of wind turbine generator,a dynamic threshold AdaBoost algorithm(DTAdaBoost)wasproposed. Based on AdaBoost algorithm,the dynamic threshold was introduced to screen the sample set dat...
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Number of views:2330 Amount of downloads:6492
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LIU Yanlong,HAN Pingping,CHEN Xiaoguang,GUO Jialin
Abstract:With the increasing penetration of new energy equipment,while alleviating the environmentalproblems caused by fossil energy,it also increases the frequency instability of the system. Photovoltaic(PV)andother new energy equipment to participate in the grid frequency regulation is an effective way to improve ...
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Number of views:2622 Amount of downloads:6475
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ZHANG He,CAO Tianbi,LI Xianyun
Abstract: In view of the complex transient characteristics of short-circuit faults in DC power network and thedifficulty of fault identification,the short-circuit faults in DC power network can be identified by detecting the change of capacitance voltage through the analysis of the VSC topology and switch characteri...
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Number of views:2761 Amount of downloads:6463
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WANG Zhengqi,WEI Wei
Abstract:Flexible multi-state switch(FMSS) is a new type of power electronic device that replacestraditional tie switches and is applied to modern distribution networks. It can optimize the consumption andregulation of distributed power sources in modern distribution networks. The FMSS controlled by VSG is notaffect...
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Number of views:2468 Amount of downloads:6435
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HE Chengzeng,LIU Qi,XU Longbin,SHAO Yuzhou,GENG Yiwen
Abstract:Permanent magnet synchronous linear motor(PMSLM)suffers from load disturbances,frictionalforces between the guide rail and the rotor,tooth slot effects,and positioning force disturbances caused by endeffects during operation. To address these issues,a kind of PMSLM control strategy was proposed for continuo...
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Number of views:1229 Amount of downloads:6417
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ZHANG Feifei,ZHANG Jun,WU Long,WU Xiaohui,XUE Zhanbo
Abstract: In order to solve the problems of false alarm rate and missing alarm rate in the traditional faultdetection method of substation primary equipment,a fault detection method of substation primary equipment based on deep convolution neural network was proposed. The substation primary equipment image and scene...
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Number of views:3868 Amount of downloads:6393