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MA Tianhui,MAWeiwei,GU Huaiguang,LIU Dong
Abstract: The modular multilevel converter(MMC)based high voltage direct current(HVDC)system(MMCHVDC)is an ideal solution for large-scale grid-connected and clustered offshore wind farms. But the interaction between the doubly fed induction generator(DFIG)and the MMC-HVDC system has a risk of subsynchronous oscillat...
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Number of views:6157 Amount of downloads:9359
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ZHOU Jie,ZHAO Shiwei,WU Yihao,YANG Xiangyu
Abstract:In order to optimize the current stress of dual active bridge(DAB)converter,an improved dualphase shift(IDPS)modulation was proposed based on the traditional dual phase shift(DPS)modulation. Firstly,the working principle of IDPS modulation was introduced,its steady-state working characteristics were analyze...
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Number of views:2546 Amount of downloads:9358
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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:5607 Amount of downloads:9353
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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:5158 Amount of downloads:9350
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LIU Weizhi
Abstract: In high-power traction converter,SiC devices with many advantages such as fast switching speed,high temperature resistance and low switching loss are used to replace Si devices. The three-level active neutral-pointclamped(3L-ANPC)converter based on SiC devices can reduce the burden of heat dissipation syst...
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Number of views:5904 Amount of downloads:9345
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ZHANG Mingke,QIU Xiaoyan,SUN Xu,ZHANG Zhirong,REN Hao
Abstract: The growing electric vehicle(EV)charging load will produce significant impact on safe operationof distribution networks. The accommodation capability of EV charging load in traditional AC distributionnetworks is limited. AC/DC distribution networks with multi-terminal voltage source converter interconnecti...
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Number of views:4443 Amount of downloads:9342
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YIN Yongliang,WU Qiong,ZHANG Jianping,ZHANG Heng,CHENG Haozhong,ZHANG Xiaohu
Abstract: With the increasing scale of wind power installation and grid connection,the interconnection ofpower grids through tie lines can absorb wind power in a wider range,but the uncertainty of wind power output leads to an increase in the risk of system operation. Conditional value-at-risk(CVaR)was introduced in...
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Number of views:4363 Amount of downloads:9340
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CHENG Zhiyuan,WU Longfei,LI Zheng,SUI Licheng,WU Xiaoting
Abstract: Current transformer(CT)inductive energy extraction is the most effective power supply method foronline monitoring equipment of power transmission cables. However,the low current of the transmission cable willcause the CT to fail to obtain energy,which will lead to the occurrence of equipment energy supply ...
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Number of views:4560 Amount of downloads:9338
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WU Zhenyu,LIU Yonghang,LIU Yuansen,ZHANG Yihan,ZHENG Yongle,ZU Wenjing
Abstract:With the proposal of the“dual carbon”goals and the development of new power systems,theproportion of renewable energy sources such as wind and solar power continues to increase,and the load volumegrows with enhanced volatility,posing higher demands on the expansion of transmission lines due to uncertainties...
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Number of views:915 Amount of downloads:9334
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CHEN Sisi,LI Zhigang,ZHENG Jiehui
Abstract:The energy flow analysis method with both high precision and high computational efficiency is abasic tool to simulate the operation and analyze the interaction between the thermal and electric coupling systems.The traditional iterative numerical method is slow in computation,poor in computability for large-...
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Number of views:2250 Amount of downloads:9332
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YANG Zhenshu,SUN Xiaozhe,YANG Jianzhong,MAO Qi
Abstract: The fault diagnosis technology of the flight electromechanical actuation system is of greatsignificance to improve the reliability of the aircraft actuation system and ensure the safe operation of the aircraft.Considering the problems and challenges encountered in the application of fault diagnosis technol...
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Number of views:6573 Amount of downloads:9330
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DONG Yue,HE Yingfei,DU Lulu,TANG Mingjie,JIN Guangchao,ZHAO Jing
Abstract:Modular multi-level matrix converter(M3C)is a kind of new topology which can convert onespecified electric frequency to another directly,it is applicable to high voltage and large capacity scene. In thefractional transmission system,the complete flow was introduced to achieve power frequency grid fault ride...
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Number of views:2250 Amount of downloads:9326
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DING Chaohui,YAO Fei,JANG Jun,GAO Ang,SHAO Gao
Abstract:The traditional predictive current control for three-phase LCL grid connected inverters has theproblems of large steady-state ripple and unstable switching frequency,which is not conducive to the quality of grid connected current and the design of filters. Therefore,an improved three vector fixed frequency ...
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Number of views:2359 Amount of downloads:9313
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A Sileng,WANG Peng,YAN Xiaomeng,MIAO Zhu,HOU Jinxiu,ZHAO Jiadong
Abstract:As an important feature of the future power system,the penetration of a high proportion ofrenewable energy sources significantly enhances the uncertainty of power system operation. The probabilistic loadflow calculation,compared with the conventional tidal current calculation,can fully consider the influenc...
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Number of views:1930 Amount of downloads:9311
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SU Le,CHENG Jing,WANG Weiqing
Abstract: In recent years,the broadband oscillation of power system caused by new energy grid-connectedoccurs frequently. As an important part of new energy,photovoltaic power station can't be ignored. In order toexplore the broadband oscillation of photovoltaic grid-connected,a detailed linear mathematical mode...
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Number of views:2212 Amount of downloads:9311