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QIN Gang，ZHANG Changqing，JIANG Xuejiao，ZHONG Lei，ZHOU Chaojun，WU Min
Abstract：During the operation of high-voltage DC power grid，due to factors such as load characteristics andvoltage fluctuations，the instantaneous power characteristics such as capacitor current and harmonics are morecomplex，which increases the difficulty of identifying faults in the power grid system. Therefore，a bi...
更多Number of views：1661 Amount of downloads：4378
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BU Xianshuai，HE Shan
Abstract：In order to improve the accuracy and stability of short-term wind direction prediction，a winddirection prediction method based on lidar wind data and an improved nonlinear echo state network（NESN）model was proposed.First of all，wind direction data 100 meters ahead of the wind turbine was obtained by laser w...
更多Number of views：1657 Amount of downloads：5203
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LI Haoyuan，CHEN Guowei，LI Guanjun，WEI Lingfeng，LIN Da，WANG Xiangjin
Abstract：With the emergence of a large number of distributed power generations，various unbalanced andnonlinear loads are connected to the power grid，resulting in the distortion of the grid current，which brings adverse effects to both the power grid and electrical equipment. A multifunctional energy storage converter...
更多Number of views：1656 Amount of downloads：5764
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HU Junze，YANG Genghuang，GENG Liqing，LIU Xinyu
Abstract：To address the issues of low accuracy and precision in transformer fault diagnosis，a transformerfault diagnosis method based on an improved particle swarm optimization-long short-term memory（IPSO-LSTM）network was proposed，integrating data feature selection and an improved particle swarm optimization algorit...
更多Number of views：1651 Amount of downloads：9753
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GENG Likai，HOU Juan，ZHANG Chunxiang，HU Wenying，LI Wenhua，LI Cuijuan
Abstract：Thermal and magnetic protection circuit breakers provided short circuit protection by instantaneoustripping devices. In the magnetic field formed by the coil with current，the moving armature and stationary coreovercomed the spring force and engage under the influence of electromagnetic force，thereby pushing...
更多Number of views：1647 Amount of downloads：4415
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WANG Xuli，XU Jiayin，SHEN Yuming，LI Kun，FENG Peiru，JIANG Guifen
Abstract：In order to make full use of the frequency modulation capability of the wind turbines，consideringthat a conventional wind-power coordinated frequency control strategy not only results in some fluctuations in thefrequency of the system，but also requires high energy storage capacity and poor economic efficien...
更多Number of views：1646 Amount of downloads：6720
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PENG Fei，TIAN Xu，LIU Fei，XU Decao，FANG Shiwen，TIAN Xu
Abstract：The integration of large-scale wind power，photovoltaic and other renewable energy resources forthe power system will greatly change the power supply characteristics，reducing the inertia of power system andthreatening the stability of transient frequency. The virtual synchronous generator（VSG）technology can ...
更多Number of views：1641 Amount of downloads：5632
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FANG Yong，SONG Tao，GUO Ziqiang，WANG Jian，GUO Jie
Abstract：With the continuous development of renewable energy sources and the increasing share ofrenewable energy in the grid，optimal coordination of maintenance work becomes increasingly important in order to ensure the safety of power supply in power systems considering renewable energy access. Current tools formai...
更多Number of views：1640 Amount of downloads：4812
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XU Qianxi，ZHAO Yangyang，CHEN Xueni，YU Yingjun，YOU Rui
Abstract：The load-transfer after the distribution area fault and mutual power support between distributionareas can be realized with the flexible interconnection device（FID）based on power electronic devices. Aiming atthe becoming increasingly prominen three-phase unbalance problem，a three-phase current unbalance reg...
更多Number of views：1638 Amount of downloads：7818
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ZHANG Mingqi，YE Hong，LIANG Hao，ZHAO Bo，WANG Chao，WANG Kui
Abstract：Aiming at the problem that the circulating currents analysis of modular multilevel matrix converter（M3C）is not deep enough and the frequency component of circulating currents is not clear，the coupling process of submodule capacitor voltage fluctuation，bridge voltage fluctuation and circulating currents in M...
更多Number of views：1629 Amount of downloads：5881
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ZHANG Jianwen，MA Haixiao，JIAN Jiahong，LIU Yueneng
Abstract：To eliminate the leakage current of single-phase non-isolated photovoltaic inverter，a six-switchphotovoltaic inverter topology with low leakage current was proposed. The topology consists of a voltage multipliercircuit，a common ground three-level inverter circuit and a LC output filter circuit. The combinat...
更多Number of views：1628 Amount of downloads：9695
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LUO Meiling，HAN Zhongxiu，YU Xiaojun，WU Jianyun，HUANG Weibing
Abstract：The islanding detection method is a necessary method for grid-connected PV systems，but，thecurrent islanding detection method is prone to misjudgement when encountering grid operation states such as highresistance short-circuit ground faults and large-capacity load casting. For this reason，an islanding detec...
更多Number of views：1628 Amount of downloads：6259
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ZHAO Enlai，HU Yu，GUO Jun，SU Xinlei，LIU Pengyuan，YANG Jun
Abstract：In view of the fact that the original high-dimensional nonlinear power flow model cannot be appliedto the linear planning of distribution network，and the existing linear power flow model has the problem of weakuniversality，a calculation method of distribution network linear power flow was proposed consideri...
更多Number of views：1618 Amount of downloads：6275
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LIAO Zhiwei，ZHUANG Jing，WANG Bowen，ZHENG Guangyu，XIE Xunkai
Abstract: Aiming at the problems that high voltage direct current（HVDC）transmission line protection andfault location are vulnerable to lightning interference，and the traditional lightning interference identificationmethods of transmission line based on time-domain and frequency-domain features exist the problems of...
更多Number of views：1614 Amount of downloads：5731
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SHENG Jie，GUO Tiantian，JIA Kaili，ZHU Jianfeng，YUAN Yuan，WANG Qi
Abstract：The grid frequently exhibits weak grid characteristics because the impedance fluctuation range ofthe collector network is broad in high permeability distributed generation system. The coupling relationshipbetween the phase-locked loop and the grid impedance leads to desynchronizing between the grid-followin...
更多Number of views：1613 Amount of downloads：6502
