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LI Hongqiang,WEI Yawei,MA Jing,ZHOU Lei,ZHANG Hanhua ,LU Guangming
Abstract:Under the large-scale renewable energy integrated with uncertain output characteristics,balancingthe supply and demand within a local area becomes a new challenge. The long-distance transmission andconsumption scheme is utilized for the sending-end grid to meet the requirements of renewable energy consumpti...
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Number of views:2020 Amount of downloads:6279
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GONG Weizheng,YAO Yin,CHEN Mengying,LI Dongdong,ZHANG Xianming,ZHU Yedong
Abstract:The rapid increase in the proportion of renewable energy in the East China Power Grid System andthe continuous decline in the rotational inertia and frequency modulation resources in the system will pose a threatto the system's frequency immunity and stability. The existing research focuses on the devel...
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Number of views:1869 Amount of downloads:6278
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LI Jiayu,HAN Yuan,WANG Jianjun,PAN Yue
Abstract:Modular multilevel matrix converter(M3C)is a multilevel topology that can directly realize ACACconversion,which has good application prospects in high-voltage transmission systems and DC distributionsystems,but the existence of bridge-arm circulating channels inside the M3C leads to a very complex controlst...
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Number of views:1978 Amount of downloads:6271
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ZHANG Xudong,WANG Yangyang,LI Xiaolong,LÜ Jin
Abstract:Aiming at the problem that the ripple content of current and voltage in cycloconverter speed controlsystem is large and the ripple period is time-varying,the real-time sampling value is not suited for feeding back tothe speed control system directly,a variable period mean sampling algorithm was proposed. Fi...
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Number of views:1926 Amount of downloads:6264
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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:2053 Amount of downloads:6253
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WANG Jie,JIN Weigang
Abstract: In view of the difficulty in detecting the uniform and non-uniform contamination of high voltage(HV)glass insulators and the inaccuracy of risk assessment,a risk assessment method for HV glass insulatorsbased on a new leakage current indicator Rhi was proposed. The new leakage current index Rhiwas derived ...
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Number of views:2660 Amount of downloads:6253
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CHEN Qian,FENG Yuan,LI Cheng,XU Yang,WANG Shuchun
Abstract:The proportion of new energy sources connected to the station area is increasing day by day,whichinevitably brings regulatory needs. Therefore,there is an urgent need for corresponding edge power flowalgorithms. In order to give consideration to accuracy,practicality and efficiency under the situation of we...
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Number of views:1491 Amount of downloads:6251
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GAO Xiaozhi,QIAO Yu,CAO Xin,LI Zheng,SUN Huiqin,SUN Hexu
Abstract: DC active power filter(DC-APF)can effectively suppress the bus voltage ripple of DC microgrid. Inorder to solve the problem that DC-APF can not work normally due to the failure of switching devices,a fault-tolerant DC-APF topology based on H-bridge converter was proposed,which could ensure the power qualit...
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Number of views:4079 Amount of downloads:6249
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GUO Jinzhi,PAN Zijun,YUAN Shaojun,SUN Rongfu,DING Ran, XU Haixiang,WANG Jingran,WANG Longyang
Abstract: The maximum power point tracking(MPPT)technology of the photovoltaic power generationsystem is the great significance to ensure the output efficiency of the photovoltaic power generation system and thestability of the system. An MPPT control algorithm was proposed based on an improved conductance increment...
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Number of views:3803 Amount of downloads:6245
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ZHANG Jianwei,YANG Zaixin,WANG Yunhui,LIU Guangchen
Abstract:In order to alleviate the intensive computational burden in the model predictive contro(l MPC)of the matrix converter,the MPC of the matrix converter was divided into the predictive control of the virtual rectifier and virtual inverter based on the equivalent indirect modulation of the matrix converter. Com...
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Number of views:1749 Amount of downloads:6234
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HE Wei,ZHAO Weizhe,RAO Zhen,LI Jia,SHAN Wenliang
Abstract: Along with the promotion of carbon neutrality and clean heating in countryside areas,operationalflexibility plays a more important role in electric power systems. Following this trend,a novel method was proposedfor evaluating the flexibility of biogas driven combined heat and power(CHP)considering the ther...
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Number of views:2404 Amount of downloads:6232
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FANG Lei,CHU Chengbo,ZHU Xiaojing,HE Yinghong,YANG Huimin
Abstract:In order to address the issue of large output voltage variation from self-powered current transformerin smart measurement switch,ultra wide input voltage range post-stage DC-DC module is required to generatestable system voltage rails. A ultra wide input DC-DC module based on constant on-time control and as...
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Number of views:2711 Amount of downloads:6231
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CHEN Guoping,WANG Juan,LIANG Zhen,ZHANG Zhiyu,BAI Haibin,SUN Qianhao
Abstract: The full fault-blocking converter(FFBC)-based DC power distribution network is an importantdirection of the power system with source-load-storage interaction. Since there is no DC breaker in FFBC-DCpower distribution network,the start-up,mode switching and fault handling control strategies of FFBC-DC power...
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Number of views:3393 Amount of downloads:6227
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DING Qiang,JIANG Yingxu,NI Tuocheng
Abstract: Firstly,the radial force mathematical model of central winding bearingless slice permanent magnetmotors was built. Subsequently,parameters tuning theory of displacement loop PID controller for bearingless motor suspension system was studied,and its inherent drawbacks of PID controller when used for bearing...
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Number of views:4237 Amount of downloads:6216
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LIU Zhipeng,QU Zhe,YU Cong,WU Qian,CHEN Bo,FANG Yaqi
Abstract:Over the years,machine learning has made some breakthroughs in the insulation defects of gasinsulated switchgear(GIS),but the traditional methods have the disadvantages of incomplete information,excessive reliance on artificial feature extraction and low diagnosis rate. In order to solve these problems,adia...
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Number of views:1640 Amount of downloads:6211