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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...
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Number of views:2283 Amount of downloads:8974
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MENG Jia
Abstract:To address the supply-demand imbalance caused by renewable energy intermittency and loadfluctuations in islanded microgrids,a two-layer optimization-based dynamic time-of-use(TOU)pricing schedulingmodel was proposed,aiming to enhance economic efficiency and operational stability. First,a comprehensivemicrog...
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Number of views:2282 Amount of downloads:9466
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PAN Pengcheng,ZHU Taojie,XIE Peigong
Abstract:To address the challenges of fuzzy carbon emission accounting boundaries and the limited diversityin the utilization of hydrogen energy within large-scale new energy hydrogen production systems,a low-carboneconomic scheduling model for an integrated energy system encompassing electro-thermal-hydrogen energy...
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Number of views:2281 Amount of downloads:10705
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WANG Yanjie,LIN Chaobin,XU Guozhi,LI Qingyao,ZHANG Zhenye,HU Kun
Abstract:To adapt to the construction of a novel power system with new energy as the main body,it isnecessary to continuously improve the new energy consumption capacity of various voltage-level power grids.Through the research on the influencing factors and improvement methods of new energy consumption capacity ofd...
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Number of views:2281 Amount of downloads:9778
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DI Ya,ZHANG Jinhua,QIAN Yang
Abstract:In DC power grid,when serious metallic short circuit fault occurs in the DC side line of voltagesource converter(VSC),the fault current has the characteristics of a fast rising speed and a large peak. The DCcircuit breaker is used to isolate the fault,which greatly increases the requirements for the quick a...
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Number of views:2276 Amount of downloads:7966
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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...
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Number of views:2276 Amount of downloads:7940
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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...
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Number of views:2267 Amount of downloads:6934
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ZHOU Qun,XIA Haogang,CAI Xiyu,LIN Dong,YAN Tiesheng
Abstract:The amplitudes of strong pull-in current and hold-on current passing through the high speedsolenoid valve were regulated accurately by using hysteresis control to realize pulse width modulation of thevoltage of fast solenoid valve,the duty cycle of the current pulse passing through the high speed solenoid v...
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Number of views:2261 Amount of downloads:9718
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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...
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Number of views:2253 Amount of downloads:10038
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ZHENG Junfeng,HUANG Jiyuan,CHEN Yuanyang,HU Xiangwei
Abstract: Aiming at the frequent voltage sag problem in power quality problems,a multifunctional voltage sagtreatment equipment was developed for user-side voltage sag treatment. Based on the modeling analysis of thesystem,the control algorithm of the system under grid-connected and off-grid compensation states and ...
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Number of views:2248 Amount of downloads:9346
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HU Xiangzheng,GAN Pei,LI Ke,WU Wenqi,GUO Hanting,HUANG Xianjin
Abstract:The insulated gate bipolar transistor(IGBT),as the core device of power electronics system,iswidely used in industrial control,transportation and new energy power generation due to its high efficiency andhigh switching frequency. However,the internal bonding wire is vulnerable to thermal stress and current ...
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Number of views:2242 Amount of downloads:10157
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WEI Xin,LI Yubo,ZHANG Yun
Abstract:Currently,the optimal modulation strategies for SS resonant networks under different operatingconditions have not been fully explored. Therefore,the optimal modulation strategy of SS resonant network wasinvestigated in low-power situations to improve the transmission efficiency and charging stability of the...
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Number of views:2229 Amount of downloads:12619
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HUANG Zhaobin,ZHANG Zhijian,LONG Tan,HU Bin,LIU Wenlong,WANG Gaolin
Abstract:When the Vienna rectifier is connected to unbalanced loads operating under light load conditions,the slight power difference causes unbalanced voltage of bipolar DC bus,which increases the voltage stress on theswitching device and DC-link capacitance. To solve the above problems,a DC offset reduction of neu...
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Number of views:2229 Amount of downloads:9876
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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...
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Number of views:2226 Amount of downloads:10822
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ZHU Jin,JIANG Ye,ZHONG Chonglei,XU Weihe,MAO Feng,DAI Yongzheng
Abstract:The resilience capacity of farm distribution networks primarily stems from distributed generators,such as photovoltaic and biogas systems,to withstand disturbances and facilitate load recovery as microgrids during system failures. However,the dynamic characteristics of distributed generators and the cascadi...
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Number of views:2215 Amount of downloads:14511