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JIAO Jinghai,LI Jie
Abstract: To solve the problem of low identification accuracy of partial discharge(PD)for electric multipleunits ethylene propylene rubber(EPR)cable terminal defects,an on-board cable terminal defect identificationmethod based on improved residual network was proposed. Firstly,cable terminals with four typical insul...
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Number of views:648 Amount of downloads:498
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LI Weiye,GONG Yifan,XU Wei,LUO Yinglu,HE Mingjie
Abstract: As a new type of compressor,linear compressor has the advantages of high efficiency,smallvolume,low noise and little vibration. However,in order to give full play to its advantages of high efficiency,it isnecessary to control the driving frequency to track its mechanical resonance frequency. According to t...
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Number of views:775 Amount of downloads:496
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LI Shengnan,HE Tingyi,HE Xin,HE Peng,ZHANG Yongchang,ZHANG Shengan
Abstract:During the joint operation of permanent magnet direct drive wind power generation systems,thechanges in motor side parameters may cause problems such as reduce control accuracy and stability on the machineside,which in turn affects the DC bus voltage of the converter,leading to power fluctuations on the gri...
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Number of views:477 Amount of downloads:495
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LOU Bin,HAI Ying
Abstract:Harmonic loss is one of the main causes of safety accidents in excitation transformers. If the lossvalue is too large,it can easily affect normal substation and transmission. Therefore,a method based on waveletpacket decomposition and reconstruction was proposed to calculate the additional loss of rectifica...
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Number of views:675 Amount of downloads:495
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LIU Xinglong,XIE Yihan,YANG Ziyang,ZHANG Zhilong,YI Hao,ZHUO Fang
Abstract:Active power filters(APF)are widely used for dynamic compensation of power system harmonic.However,under weak grid conditions,the interaction between APF,nonlinear loads and grid impedance can easily lead to the stability issue of harmonic oscillation around the compensation frequency,resulting in the fault...
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Number of views:768 Amount of downloads:494
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LIU Hao,WEI Lixin,YOU Lichun
Abstract: Due to the particularity of its application,offshore drilling rig has higher requirements for thestability and control accuracy of the control signal. Aiming at the situation that the signal in the electronic controlsystem of offshore drilling rig is greatly disturbed by noise,a PID control signal optimiza...
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Number of views:730 Amount of downloads:488
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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:490 Amount of downloads:484
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LUO Ranjie,LI Qian,GAO Jing,FENG Chongwen,MAMengyuan,GUO Peijian
Abstract:The development status of electric drive systems in the industrial sector and their significance inpromoting green and low-carbon transformation were studied. As a crucial control and energy-saving equipment inthe industrial sector,electric drive systems face numerous challenges posed by unchecked developme...
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Number of views:584 Amount of downloads:477
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GUO Jiahao,YANG Xiong,FANG Xin,GUAN Jiamin
Abstract: The secondary voltage signal output by electronic capacitive voltage transformer in the primary andsecondary fusion equipment is very weak,which is easy to be interfered by high-order harmonics,resulting inunstable signal transmission. In order to solve these problems,a high-order and high-precision filter...
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Number of views:767 Amount of downloads:477
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LIU Dong
Abstract: Focus on the stator winding insulation and voltage oscillation of variable frequency motor,thetransition process of the pulse voltage output by the frequency converter in the transmission path of stator windings,frequency conversion cables,reactors,etc was analyzed,the voltage equivalent mathematical model...
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Number of views:582 Amount of downloads:477
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JIANG Wenhui,LIN Dong,YU Li,CHEN Bo,CHEN Yumin
Abstract: The voltage stability of power grid was briefly introduced,and the measurement method of voltagestability of phasor measurement unit(PMU)based on state estimation was proposed. This method mainly aims atthe voltage change caused by the load rate change. The voltage stability under different load conditions...
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Number of views:527 Amount of downloads:468
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FU Chen,FEI Fei,WANG Jianjun,GUO Mingxing,LIN Shunfu,ZHANG Qi
Abstract:Making full use of the regulation of flexible resources can effectively suppress the fluctuation ofrenewable energy generation and ensure the economic and safe operation of power system. An optimal dispatchingmethod for power system considering the flexibility of battery energy storage systems(BESS)and pump...
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Number of views:754 Amount of downloads:463
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LI Wei,LUO Cheng,YANG Kai,WANG Xuming,QIU Lingfeng,HUANG Yuhao
Abstract:When the permanent magnet assisted synchronous reluctance motor(PMaSynRM)runs at highspeed with flux-weakening control,the DC bus voltage utilization is not high,and the efficiency and torque output capacity of the motor are low. Therefore,a flux-weakening control strategy of permanent magnet assistedsynchr...
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Number of views:782 Amount of downloads:462
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LIAO Zhiwei,ZHUANG Jing,WANG Bowen,ZHENG Guangyu,XIE Xunkai
Abstract: Aiming at the problems that high voltage direct current(HVDC)transmission line protection andfault location are vulnerable to lightning interference,and the traditional lightning interference identificationmethods of transmission line based on time-domain and frequency-domain features exist the problems of...
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Number of views:549 Amount of downloads:462
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CAO Min,YU Wenjin,BAI Zeyang,YI Xin,JU Jian
Abstract:In order to ensure the minimum carbon emission and optimal power distribution of the hybridenergy storage microgrid under the constraint of carbon footprint,a distributed coordinated control algorithm of the hybrid energy storage microgrid under the constraint of carbon footprint was proposed. Based on the ...
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Number of views:671 Amount of downloads:460