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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:2807 Amount of downloads:1423
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ZHANG Mao,CHENG Wenming,QIN Qin
Abstract: A set of container positioning system based on the laser radar measurement technology wasdesigned and realized to solve the problems of long service time,low efficiency and high labor intensity in therailway freight yard which caused by the manual operation of crane spreader alignment. The overall architec...
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Number of views:3168 Amount of downloads:1422
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SHEN Gaobo,LIU Xu
Abstract: A variable flux reluctance machine(VFRM)control system based on the excitation current controlof a single leg was proposed. Compared with the VFRM control system based on the H-bridge which controlling theexcitation current,fewer switch devices were used,in which the cost of the inverter was reduced while ...
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Number of views:3348 Amount of downloads:1420
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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:3421 Amount of downloads:1418
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CHENG Jin,PAN Zhixuan,CHENG Haifeng,DAI Mingli,HUANG Minli
Abstract: With the continuous improvement of the penetration rate of wind turbines,in order to suppress thevoltage/frequency fluctuations of the doubly-fed induction generators(DFIGs)after grid-connected due to their own active power output fluctuations,aDFIGinertia support and primary frequencymodulation control ba...
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Number of views:2292 Amount of downloads:1414
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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:3320 Amount of downloads:1414
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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:3396 Amount of downloads:1412
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WANG Baihuai,WUTong,ZHANGWeizheng,FANG Xuezhen,LIYingzhi
Abstract: In order to enhance the stability of power grid operation and improve power supply capacity of powergrid,a power supply capacity simulation method based on harmonic reactive compensation was proposed. Theharmonic data in the power network equipment was calculated through DIgSILENT/PowerFactory software,inc...
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Number of views:3576 Amount of downloads:1412
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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:3437 Amount of downloads:1411
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ZHOU Ye,CUI Shuangxi,FAN Xiaochao,WANG Weiqing,WU Binbing
Abstract: When the grid voltage is unbalanced,the negative sequence current will seriously affect the qualityof the output power of the grid-connected inverter. The detection speed of the grid information is one of the mainfactors of negative sequence current compensation. Therefore,a control strategy without phase-...
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Number of views:3143 Amount of downloads:1410
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GAO Yujie,ZHANG Chengrui,DING Xinzhong,LI Huxiu,CHEN Pan
Abstract: In the galvanometer scanner system,the motor should meet the requirement of 2°/200 Hz highfrequency response. It was inappropriate to utilize PID controller under the demands of small-inertia,lowamplitude,high-frequency. Therefore,many control algorithms are studied and applied,such as currentmultisampling...
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Number of views:3267 Amount of downloads:1410
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LÜ Feichun,HU Jingtao,ZHANG Wentao,HU Dong,WU Xu
Abstract: In recent years,the large-scale grid connected operation of distributed energy has led to the gradualevolution of traditional power users from simple power consumers to prosumers with both power production andconsumption capacity,and can orderly participate in market transactions under the guidance of mark...
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Number of views:1729 Amount of downloads:1406
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FU Yu,LI Tie
Abstract: The microgrid is essentially an active distribution network,which is a combination of the distributed generation(DG)system and different loads at the distribution network voltage level. By analyzing factors such as safety and reliability,energy conservation and environmental protection in the microgrid,and...
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Number of views:3479 Amount of downloads:1406
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LIN Bin,SHAO Haoshu,WANG Xiaohe,LI Hongke,CAI Xu
Abstract: With the increasing scale of wind farms,large scale wind farm is gradually shifting from onshorewind farm to offshore wind farm,squirrel cage induction generator(SCIG),which is the main type of offshore wind farm,has become the main research object of offshore wind farm dynamic characteristics. In order to...
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Number of views:3163 Amount of downloads:1400
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LI Qinzhao,ZHAO Xuemin
Abstract: When the microgrid is operating in island mode,the cascaded H-bridge(CHB)converter as aninterface device may need to be configured with a non-sinusoidal reference wave of pulse width modulation(PWM)when implementing auxiliary functions such as negative sequence compensation. In order to avoid overmodulatio...
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Number of views:2809 Amount of downloads:1398