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LIU Juan,LEI Hui,LÜ Jin,WANG Yang,Xu Deshu
Abstract:The state of charge(SOC)of batteries is one of the most important parameters in lithium-ionbattery management technology,and high-precision SOC estimation is beneficial for the grid connection andcontrol of energy storage stations. Battery charge and discharge data are not only time-series in nature,but als...
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Number of views:616 Amount of downloads:653
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XU Binbin,CHEN Chang,ZHANG Aoyu,WANG Yongqiang
Abstract: In order to study the distribution of magnetic field and temperature field of dry-type transformeriron core more accurately,analyze the influence of different excitation on the magnetic field loss and hot spottemperature rise of dry-type transformer core,firstly,Maxwell was used to calculate the transient ...
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Number of views:697 Amount of downloads:984
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DONG Min,LIU Kezhen,ZHAO Qingli,CHEN Leidan,YAO Yue,ZHAO Xiong
Abstract: Under the "dual carbon" goal,the electric energy systems need to gradually develop towards theway of energy saving and low carbon. The integrated energy system(IES)is an important measure to solve energyand environmental protection problems. At present,the research on IES mainly focuses on distributed ener...
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Number of views:619 Amount of downloads:497
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YANG Fan,WANG Huanmin
Abstract:With the development of power electronics technology,microgrid type energy storage inverters withvirtual synchronous generator(VSG)function have also been widely used. In VSG technology,due to the presenceof inertial frequency regulation loop and voltage regulation loop,the inverter can realize the grid fre...
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Number of views:765 Amount of downloads:474
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JIN Dan,ZHI Jing,XIN Shijin,YANG Jian,HUANG Yafei,XU Qing
Abstract:Voltage source converter(VSC)connected to weak AC power grid has the risk of small disturbanceinstability. Under the traditional control strategy,VSC has to reduce output power to maintain stable operation. Inorder to improve the stability of the weak grid connected VSC system,first established a universal ...
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Number of views:459 Amount of downloads:498
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LI Ruizhe,WU Ming,LIU Shiyu
Abstract:To address the issue that existing microgrid planning evaluation methods do not adequately accountfor the influence of uncertainties in the system and environment on the evaluation results,a microgrid planningevaluation method based on regret theory-vlsekriterijumska optimizacija i kompromisno resenje(VIKOR...
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Number of views:535 Amount of downloads:591
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TANG Aiwu,CHEN Tianyou
Abstract:In order to effectively adjust and control the motion amplitude of the flexible manipulator and avoidlarge deviation between the actual motion track of the flexible manipulator and the target track,a flexiblemanipulator motion track control system based on the combination of distributed control system(DCS)a...
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Number of views:437 Amount of downloads:322
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KE Ting,TIAN Songlin,ZHOU Hai
Abstract:In order to solve the problem of low accuracy of small substation fault diagnosis,a small substationfault diagnosis model based on cooperative game and cloud model was proposed. By analyzing the characteristicsand causes of faults,the diagnosis index system was established. Entropy method and expert weighti...
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Number of views:431 Amount of downloads:492
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HUANG Licai,YANG Xu,ZHANG Jing,LUO Chuanxian,CHEN Jia,ZHANG Guozhi
Abstract:In view of the frequent occurrence of omissions and false alarms of partial discharge insulationdefects in on-site gas insulated switchgear(GIS),the partial discharge multi-source detection test platform was built by using true GIS to carry out the intermittent discharge test of metal contamination defect o...
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Number of views:396 Amount of downloads:322
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WU Zhiheng,LIU Aimin
Abstract: The motor actuator used in circuit breaker has the advantages of simple structure,small dispersal ofaction and strong controllability,which provides the possibility for the switch contact of circuit breaker to followthe preset reference curve. The traditional control method can not adjust the parameters ac...
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Number of views:684 Amount of downloads:501
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LI Weiye,GONG Yifan,XU Wei,LUO Yinglu,HE Mingjie
Abstract: As a new type of compressor,linear compressor has the advantages of high efficiency,smallvolume,low noise and little vibration. However,in order to give full play to its advantages of high efficiency,it isnecessary to control the driving frequency to track its mechanical resonance frequency. According to t...
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Number of views:725 Amount of downloads:465
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JING Qi,WANG Changkai,XU Fengxia,YU Liqi
Abstract: In high-precision applications,the control accuracy of the servo system is extremely high required.The control precision of the servo system depends largely on the precision of the feedback measurement. Positionand speed feedback accuracy can be improved by increasing the absolute accuracy of the encoder,a...
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Number of views:709 Amount of downloads:465
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WU Qing,AN Shaoliang,XU Yixuan,DONG Songsong
Abstract: A quasi-resonant Flyback(QR-Flyback)converter with 65 W output was designed. The valleyswitching principle and the switching loss reduction mechanism of QR-Flyback were analyzed,the frequency andloss characteristics of the system under different working conditions were compared,and the advantages anddisadv...
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Number of views:618 Amount of downloads:542
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GUO Jiahao,YANG Xiong,FANG Xin,GUAN Jiamin
Abstract: The secondary voltage signal output by electronic capacitive voltage transformer in the primary andsecondary fusion equipment is very weak,which is easy to be interfered by high-order harmonics,resulting inunstable signal transmission. In order to solve these problems,a high-order and high-precision filter...
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Number of views:726 Amount of downloads:448
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XU Junyue,LIU Yi,GUI Jiae
Abstract: Aiming at the problems of three-phase load imbalance,power quality degradation and harmonicdispersion in current electronic power distribution system,a comprehensive power quality control scheme with fastdynamic response and small output harmonic was proposed,which includes comprehensive control mode andco...
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Number of views:573 Amount of downloads:484