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JIA Junqing,LÜ Chao,LIU Dinghua,XU Hao
Abstract: With the rapid development of artificial intelligence algorithms,convolutional neural networks withfewer layers have been used in distribution network overvoltage recognition. The deep-level network has a higherrecognition rate,but requires a large number of data samples. At present,the amount of data in t...
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Number of views:3139 Amount of downloads:1234
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JIN Yongchun,CHEN Li,ZOU Yusheng,DUAN Chengwu,YAO Jian
Abstract: Due to the advantages of high efficiency,wide speed range,high torque density and great controlperformance,permanent magnet synchronous motors(PMSM)have been widely used in driving systems of electric vehicles(EVs). However,as the increase of power density,the problem of temperature rise caused by loss hea...
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Number of views:1896 Amount of downloads:1232
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YANG Chongwei,LIANG Xu,MAO Lan
Abstract: After a large-scale and high proportion of photovoltaic power generation is connected to the lowvoltage distribution network system,it will most likely cause the system power flow reversal,resulting in the out of limit voltage of each node of the system and the increase of system loss. First,using the line...
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Number of views:3088 Amount of downloads:1230
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ZHOU Xuesong,XIE Bingjie,MAYoujie,LIU Qian
Abstract: To effectively solve the problem of stable control for DC-bus voltage in the independent photovoltaicenergy storage system under multi-source disturbances,a bidirectional DC-DC converter control scheme based onimproved linear active disturbance rejection control(LADRC)was proposed. The linearized small sig...
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Number of views:2792 Amount of downloads:1224
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REN Zhimin,LIN Yuanxiang,LIU Yang
Abstract: A magnetic actuation system of an interventional surgical robot was studied,which is a new type ofelectromagnetic driving device that uses a mobile coil with a ferrous core to realize the magnetic driving in largespace. By using the method of maximizing the magnetic field in the target region,the coil mode...
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Number of views:3012 Amount of downloads:1216
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SU Jichen
Abstract: Due to the low efficiency of data processing and high export delay of intelligent measurementequipment in substation engineering,the construction progress of substation engineering is slow. Therefore,the data batch export system of intelligent measurement equipment in substation engineering was designed. T...
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Number of views:2933 Amount of downloads:1204
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CHEN Guangzhu,YANG Yuxin,ZHANG Yanan,LÜ Peihe,WANG Jianquan
Abstract: The new version of the national standard GB/T 15576—2020《Low-voltage reactive powercompensation assemblies》was released on November 19,2020,and has been implemented on June 1,2021,replacing the old standard. Through comparative analysis of the content of the new and old standards and key tests,the test met...
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Number of views:2352 Amount of downloads:1192
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LIU Jinchao,DUAN Hongmin,WU Letao,LIU Ligang,XU Chao
Abstract: Aiming at the phenomenon of pressure relief and deflagration caused by the faults of oil-immersedtransformer,a logic was proposed that the transformer can keep self-maintained running when faults occurred,and according to the logic,a scheme of oil circuit equipment was designed. The above logic and the sch...
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Number of views:3224 Amount of downloads:1190
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WANG Lu,FAN Bo,QIU Yulin
Abstract: How to effectively deal with the complex and changeable nonlinear characteristics of inductionmotor is the key to give full play to the performance of motor and maintain the robustness of motor control system.From the energy analysis,an induction motor speed control method based on passivity based iterativ...
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Number of views:2987 Amount of downloads:1183
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ZHANG Cheng,HAN Cun,REN Wei,ZHAO Jinlei,ZHANG Xiao,ZHANG Xudong
Abstract: Based on the AC-DC-AC variable frequency speed control system of synchronous motor,theparameters of PI regulator were optimized by chaos particle swarm optimization algorithm. A pseudo-randomsequence generation method was constructed using a chaotic map dynamic integer tent map,and an objective function of...
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Number of views:2123 Amount of downloads:1182
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GUO Dengke,MI Wentao,ZHUANG Feihu,XU Yiduan,FAN Ruini
Abstract: According to the requirements of quickly and reasonably formulating load transfer measures afterdistribution network failure at this stage,a reliability evaluation scheme for fault transfer based on K-fold verification was introduced. Square up various power supply modes,according to the energy balance equ...
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Number of views:3118 Amount of downloads:1181
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HAN Jianfu,XIAO Chun,SONG Xiaobing,LU Jiansheng,WANG Feifei
Abstract: With the continuous advancement of China's energy Internet strategy,how to reduce the occurrenceof electricity theft has become a focus of research. The historical data of electricity consumption was processed andanalyzed,and the data of electricity consumption were processed and converted to realize t...
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Number of views:2713 Amount of downloads:1179
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LU Hai,ZHANG Xudong,DANG Junpeng,GUO Li,LIU Rui
Abstract: A 2-stage three-level power conversion system(PCS)was studied,in which the 3-level T-type 3-leg3-phase 4-wire(3LT23L3P4W)topology was adopted as AC/DC part while the 3-level Buck/Boost topology wasutilized as DC/DC interface. To address the neutral point potential(NPP)unbalance of the PCS,firstly,with thea...
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Number of views:3116 Amount of downloads:1179
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TAN Xiaomeng,LIU Jichun
Abstract: New energy with intermittent and uncertainty would seriously impact the operation reliability,especially in isolated multi-energy complementary generation system,and make the system face certain risks. Thus,reasonable system reserve is the key to avoid large risk loss in isolated island power system under ...
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Number of views:2852 Amount of downloads:1177
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REN Hao,QIU Xiaoyan,ZHANG Zhirong,SUN Xu,ZHANG Mingke
Abstract: With the development of electric vehicle(EV),there are a large number of EV charging load in thepower grid. Because of its unique advantages,AC/DC microgrid is more convenient for the access of AC slowcharging pile and DC fast charging pile. However,large-scale EVs integration will bring impact to the powe...
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Number of views:2846 Amount of downloads:1172