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JIA Pengfei,HE Yongpeng,YANG Jianxin,ZHANG Qing,WU Wenda
Abstract:Industrial communication technology is an effective way to achieve network control of industrialequipment. With the development of Ethernet technology in recent years,a top layer application technology basedon Ethernet,PROFINET has rapidly developed. However,due to the lack of high-speed network interfaces ...
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Number of views:2136 Amount of downloads:5341
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GAO Ruiteng,WANG Shuhong,WU Hao,LI Jiabin,CAO Jianwen,WU Pan,ZHANG Ailing
Abstract: A no-load grid-connected voltage phase control method of the brushless doubly-fed inductiongenerator(BDFIG)based on the control winding flux was proposed,the control system structure block diagram was constructed according to the mathematical model and control strategy of BDFIG. The hardware circuit of the...
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Number of views:3777 Amount of downloads:5329
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YANG Zhenyu,WANG Wei,XU Wenzheng,ZUO Zhiling,CHEN Changqing
Abstract:The telecommunication power supply applied in 5G base stations can save energy consumption byreducing the output voltage when the equipment works in standby state. Nevertheless,frequent and rapid outputvoltage regulating of the converters is challenging. To solve this problem,the concept of partial power co...
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Number of views:1912 Amount of downloads:5326
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KONG Lingqing,HE Shan,DONG Xinsheng,LI Ji,YANG Dingqian,HU Shuai
Abstract: In order to solve the problem of voltage and frequency fluctuations at the grid-connected point of thepermanent magnet wind turbine during high and low voltage ride-through,a virtual synchronous generator(VSG)was proposed to control the grid-side converter to improve the inertia and damping of the permanen...
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Number of views:2153 Amount of downloads:5320
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CHEN Wanqing,CHEN Keren,SHI Pengjia,JIN Xiaolong,WANG Huiyuan
Abstract: To reduce the energy cost and carbon emissions due to the large-scale farming,an optimal scheduling method for integrated energy systems(IES)in low-carbon farm considering thermal dynamic characteristics of the livestock houses was proposed. First,the mathematical models of the integrated energy systems in...
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Number of views:2836 Amount of downloads:5316
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LIU Lingshun,LI Yongheng,YAN Hongguang
Abstract: A nine-switch converter space vector pulse width modulation(SVPWM)algorithm was proposedbased on the dual Y shift 30° permanent magnet synchronous motor(PMSM)voltage vector. Compared with thebiggest four vectors of the twelve-switch converter SVPWM algorithm,the proposed algorithm not only reducesthree swi...
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Number of views:1980 Amount of downloads:5313
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CAOWei,GUI Shicheng,HUANG Ruanming,HE Bilun,QIN Huancheng
Abstract: With the expansion of the interconnection scale of the power system,the impedance ratio of thepower grid increased gradually,thereby the breaking capacity of the circuit breaker was affected by the increasingattenuation time constant of the DC component of the short-circuit current .At present,the periodic...
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Number of views:3503 Amount of downloads:5275
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LI Ning,WANG Ruyue,ZHU Longhui
Abstract:In order to analyze the power quality problem of actual power network under the influence ofuncertain interference factors,a power quality detection and recognition method combining empirical wavelettransform(EWT)and improved S-transform was proposed. On the one hand,the frequency,amplitude and timeparamete...
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Number of views:1888 Amount of downloads:5271
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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:1534 Amount of downloads:5257
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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:1724 Amount of downloads:5256
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DENG Yaping,JIA Hao,ZHANG Xiaohui,TONG Xiangqian,WANG Lu
Abstract:The accurate recognition of power quality disturbance(PQD)is one of the main problems to besolved after PQD occurrence,which is of great importance for responsibility dividing and power market reformprocess accelerating. Massive quantities of power quality monitoring data prepare the ground for the recognit...
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Number of views:1856 Amount of downloads:5253
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JIA Junqing,ZHANG Yifan,PAN Dazhi,LIANG Shuai,YANG Yang
Abstract: Under the background of the increasingly prominent voltage sag problem in modern power grids,itis of great engineering significance to accurately identify the users' profile of demand of voltage sag control forguiding users' precise investment decisions for voltage sag control and helping power gri...
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Number of views:2101 Amount of downloads:5241
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GE Yaming,ZHOU Chenbin,MENG Yihua,SHEN Jiaoxiao,CAO Haiou,REN Xuchao
Abstract:With the accelerated construction of new power systems,the scale and complexity of transmissionsystems are constantly increasing. Therefore,it is urgent to study transmission line fault diagnosis algorithms thatutilize multi-source data as driving sources and meet requirements for accuracy and low time cons...
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Number of views:1919 Amount of downloads:5239
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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:2027 Amount of downloads:5239
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ZHOU Jinwei,DING Dawei,JIANG Xuexiang,REN Zhaoting,LI Xizhi
Abstract:Maximum torque per ampere(MTPA)control can effectively improve system efficiency throughreducing copper loss,which is suitable for air conditioning permanent magnet compressor system. However,due to the inverter non-ideal characteristics,the tracking accuracy of the optimal current vector angle decreases. T...
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Number of views:2018 Amount of downloads:5226