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SHU Jun,YE Fan,YAO Fenglin
Abstract:The power cable plays a very important role in today's social development and urban operation.With the increase of people's electricity consumption,the amount of cable laying is also increasing synchronously.In order to prevent the cable from being damaged,the environmental vibration signals around ...
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Number of views:459 Amount of downloads:366
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WANG Qi,DONG Xinsheng,HE Shan
Abstract:To address the issue of transient overvoltage at the sending end of the wind farm caused by faults inconventional high-voltage direct current systems system,the impact mechanism of DC faults on transient voltagechanges at the sending end was analyzed. It was discovered that the reactive power surplus of the...
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Number of views:563 Amount of downloads:366
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LU Lin,KONG Fanting,ZHANG Chunxiang,CHEN Jian,WANG Lianjie
Abstract:Static var generator(SVG)can governance power quality,energy conservation and reduceconsumption,furthermore it is an energy consumption product.The reasonable evaluation of the energy saving ofthe device has become an urgent problem to be solved. The power saving measurement technology of products wasstudie...
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Number of views:454 Amount of downloads:361
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WANG Mingyue,HE Yongpeng,YU Zhiqiang,ZHANG Zhonglei,YU Hongze
Abstract:Because of crystal oscillator error,inter-symbol interference and baseline drift in industrial opticalfiber communication,the optical fiber receiver has the problem of high error rate of data recovery. In long-distanceindustrial communication,the electrical level jitter of serial data at the receiver will i...
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Number of views:431 Amount of downloads:360
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YAN Kun,GAN Jingfu,LIU Hongshun,SUI Yizhen,HE Pengkang
Abstract:A fusion prediction method was proposed to predict and correct the calculation deviation of the toptransformer oil temperature model in IEEE guideline,so as to realize the more precise prediction of the transformertop oil temperature(TOT). Firstly,the characteristics of the transformer TOT model and the ext...
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Number of views:556 Amount of downloads:359
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LI Hongqiang,WEI Yawei,MA Jing,ZHOU Lei,ZHANG Hanhua ,LU Guangming
Abstract:Under the large-scale renewable energy integrated with uncertain output characteristics,balancingthe supply and demand within a local area becomes a new challenge. The long-distance transmission andconsumption scheme is utilized for the sending-end grid to meet the requirements of renewable energy consumpti...
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Number of views:509 Amount of downloads:355
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ZHANG Xiaolian,WU Qichuan,HAO Sipeng,Qin Shiqiu,HU Qi,ZHANG Jinhua
Abstract:The participation of wind power and energy storage in primary frequency regulation of power gridcan make better use of the advantages of wind power and energy storage for frequency regulation,which hasgradually become a new trend. However,there are some problems in the coordination of wind power system ande...
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Number of views:418 Amount of downloads:353
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GONG Weizheng,YAO Yin,CHEN Mengying,LI Dongdong,ZHANG Xianming,ZHU Yedong
Abstract:The rapid increase in the proportion of renewable energy in the East China Power Grid System andthe continuous decline in the rotational inertia and frequency modulation resources in the system will pose a threatto the system's frequency immunity and stability. The existing research focuses on the devel...
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Number of views:475 Amount of downloads:346
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FAN Peilin,HU Pengtao,XUE Jianli,LIU Zheng,HUANG Jinming
Abstract:Voltage source converter (VSC) is prone to low-frequency oscillations of 100~101Hz whenconnected to weak AC power grids. The mechanism of improving the control strategy of VSC on the traditionalinverter side to suppress low-frequency oscillations(LFO)in the AC power grid is to transfer the oscillations from...
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Number of views:356 Amount of downloads:341
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LIU Yawei,GUAN Peng,SUN Lunan,WANG Chunhui,WANG Hao
Abstract:The micro-grid solves the problem that the intermittent and fluctuating power generation hasadverse effects on the stable operation of the distribution network when the distributed generation is connected tothe distribution network. In order to meet the economic operation of micro-grid under grid connected ...
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Number of views:502 Amount of downloads:341
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WANG Hao,LIU Naisuo,MENG Chao,FAN Ronggui,GONG Junlin,GAO Lianyan
Abstract:In order to solve the problem that the electrical cabinet of the original production and injectionsystem in the same well has a low intelligence level and cannot realize remote monitoring,diagnosis,restart andmaintenance through the network,an intelligent control software for production and injection in the...
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Number of views:491 Amount of downloads:340
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ZHENG Bining,YAN Dong,SONG Peng,ZHANG Zhen,YAN Yan
Abstract:The structure parameters of dual-stator permanent magnet synchronous motors(DSPMSM)wereoptimized with finite element methodTaguchi method at the rated point,maximum torque point,and maximum speed point,respectively,aiming at the problem of large torque ripple of DSPMSM. The influence onelectromagnetic torqu...
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Number of views:483 Amount of downloads:339
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SHENG Jie,GUO Tiantian,JIA Kaili,ZHU Jianfeng,YUAN Yuan,WANG Qi
Abstract:The grid frequently exhibits weak grid characteristics because the impedance fluctuation range ofthe collector network is broad in high permeability distributed generation system. The coupling relationshipbetween the phase-locked loop and the grid impedance leads to desynchronizing between the grid-followin...
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Number of views:493 Amount of downloads:328
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DENG Guimei,ZHANG Yue,HE Yongpeng,ZHAO Haixu,YU Hongze
Abstract:In order to study the operating characteristics of onboard power net of high-speed maglev train,anautomated networking test system based on LabVIEW was developed on the basis of several independent onboardpower net test systems. Through the comprehensive simulation of the external power supply of the train,...
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Number of views:356 Amount of downloads:327
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BU Xianshuai,HE Shan
Abstract:In order to improve the accuracy and stability of short-term wind direction prediction,a winddirection prediction method based on lidar wind data and an improved nonlinear echo state network(NESN)model was proposed.First of all,wind direction data 100 meters ahead of the wind turbine was obtained by laser w...
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Number of views:396 Amount of downloads:326