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LÜ Chao,JIA Junqing,ZHOU Jia,WU Tianyu
Abstract: The rapid development of artificial intelligence algorithm and edge computing technology has laid afoundation for the development of a new type of over-voltage identification device of distribution network withhigher identification rate and stronger intelligence. A design method of hardware and software sy...
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Number of views:3980 Amount of downloads:2211
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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:2938 Amount of downloads:2210
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ZHOU Liying,XIA Changhao
Abstract: Three-phase bridge converters(TPBC)are widely used in low-voltage power distribution networksto compensate the negative-sequence current and the reactive current. Because of the relatively high costs,improving the compensation effect of limited capacity equipment has high economic value and research signif...
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Number of views:4061 Amount of downloads:2193
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LU Yibing,LI Feng,ZHAO Wenbin,LU Wu,HUO Simin
Abstract: A power angle control method for DC system with doubly-fed induction generator based on air gapflux vector regulation was presented,which could reveal the relationship between the air gap EMF vector angle andthe stator output power,and could be used to directly control the stator output power. In the propos...
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Number of views:3839 Amount of downloads:2186
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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:3926 Amount of downloads:2183
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PAN Ling,FENG Qian,ZHANG Peng,SHEN Bing,ZHOU Jian,CHEN Ran,ZHAO Jinshuai
Abstract: Due to the high cable ratio of city grid,the harmonic pollution is aggravated. For the buses with high harmonic voltage content,it is necessary to evaluate the harmonic emission level of the utility side and customer side. Most of the existing evaluation methods are based on two assumptions:1)the harmonic ...
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Number of views:4388 Amount of downloads:2175
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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:3814 Amount of downloads:2169
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YANG Zhengdong,SHI Haobo
Abstract: The tracking of the distorted current signal without static error cannot be completed by a single PIcontrol. In order to improve the quality of the grid current,a harmonic compensation method for parallel active filters under extreme loads was proposed. Create the main circuit topology of the parallel acti...
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Number of views:3862 Amount of downloads:2168
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ZHANG Ao,DAI Linwang,MA Zhengyang,LI Shaolin,ZHANG Xueguang
Abstract: Doubly-fed wind turbine is easy to produce sub-synchronous oscillation in series compensation grid.Using virtual synchronous control structure to improve inertia and damping for grid may also lead to subsynchronous oscillation risk. In view of the causes of sub-synchronous oscillation,firstly,the double-fe...
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Number of views:2785 Amount of downloads:2167
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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:3538 Amount of downloads:2163
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TANG Taonan,WANG Jian
Abstract: Aiming at the fault-tolerant operation problem of induction motor driving system with sensorfailures,a smooth fault-tolerant control strategy combining indirect field-oriented control(IFOC),direct torquecontrol(DTC)and V/f control was proposed. The indirect field-oriented controller and the direct torque c...
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Number of views:3635 Amount of downloads:2162
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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:3829 Amount of downloads:2156
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DENG Dawei,LIU Peilin,ZHUWen,HE Chaolin,XIAWei
Abstract: In order to improve the substation dispatching and the adaptive control ability,an optimizationmethod for consistency test of substation dispatching center single line diagram modulus diagram based on theanalysis of equivalent inertia characteristics was proposed. The power control parameters of the substa...
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Number of views:3948 Amount of downloads:2153
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HE Kun,WANG Can,ZHANG Kan,CHEN Kaiping,ZHU Hanqin,FU Zhiyu,XU Lei
Abstract: In the case of asymmetric faults in high voltage direct current(HVDC) transmission system,modular multilevel converter-battery energy storage system(MMC-BESS)has a longer state of charge(SOC)balancing process,uneven allocation of resources,easy to occur over modulation and other security problems,anew SOC ...
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Number of views:2708 Amount of downloads:2148
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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:4008 Amount of downloads:2147