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LIU Fusuo,DING Rui,WANG Yu,CHENG Shuo,WANG Qi,HUANG Xifang
Abstract:In order to solve the DC over-voltage problem caused by surplus power when short circuit faultoccurs in the recipient grid of offshore wind power via voltage source converter high voltage direct currenttransmission(VSC-HVDC)delivery system,a joint fault ride-through strategy based on surplus power allocatio...
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Number of views:1363 Amount of downloads:4219
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LAI Jiayuan,YAO Ruotian,LIU Dishen,BAI Hao,XIA Zipeng,LIU Yipeng
Abstract:In order to further improve the power density and output performance of the transformerlessmedium-voltage power quality control device,a partial submodule multiplexing modular multilevel converter(PSM-MMC)topology and its control strategy were proposed. The PSM-MMC was composed of four groups ofarm submodul...
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Number of views:1348 Amount of downloads:8549
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LIANG Hong,QIAN Renjun,CHENG Yongjun,HU Jiangyu,ZHANG Man
Abstract:As a kind of winch driven by motor,electric winch has more excellent performance of cable control.However,in the process of retracting and releasing the cable,the drum inertia of the electric winch will change with the change of the cable stock. This unknown inertia change will lead to mismatching of motor ...
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Number of views:1317 Amount of downloads:10095
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GUO Cheng,WANG Linling,HE Mi,YANG Fayu,YANG Xuanming
Abstract:The influence degree of voltage sag on equipment is related to the fault removal time of protectionaction,the magnitude of sag caused by fault and the tolerance ability of equipment sag. The challenge ofconsidering voltage sag factors in the protection setting process is to determine a time setting method b...
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Number of views:1215 Amount of downloads:6071
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ZHANG Yunquan,CHEN Xuanang,GUO Xiaorui,WEN An,YE Run
Abstract:To address issues like overcurrent,power oscillations,and insufficient dynamic response intraditional virtual synchronous generator(VSG)control during grid voltage sags,an improved VSG- low voltageride through(LVRT)mode-switching control strategy for grid-forming inverters was proposed. The strategydynamica...
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Number of views:1165 Amount of downloads:4510
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YAN Wei,MENG Jianhong,WANG Haochong,WANG Wei
Abstract:In low-temperature environments,the electrochemical reaction kinetics of lithium-ion batteriesbecome hindered,leading to accelerated capacity decay and increased internal resistance,which severely impactstheir lifespan and safety. To achieve non-destructive estimation of internal aging,a battery internal ag...
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Number of views:1140 Amount of downloads:5368
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GAO Jixin,ZHU Jianzhong,HAH Xiao,ZHOU Yancheng,XU Jing
Abstract:In islanded DC microgrids,line impedance and load fluctuations lead to uneven power distributionand voltage deviation,threatening system stability and affecting energy storage lifetime. Existing droop controlstrategies need to preset a fixed initial droop coefficient,which makes it difficult to balance the ...
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Number of views:1097 Amount of downloads:4799
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HAN Junkang,HAO Sipeng,LI Shuheng
Abstract:The high proportion of new energy grid connection increases the frequency fluctuation of the powergrid,and grid-forming energy storage is regarded as a key resource to improve frequency stability due to its fastresponse and inertia support capability. To address the underestimation of fast-response resource...
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Number of views:1041 Amount of downloads:4988
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XU Bin,CUI Wenqing,CAO Huanxi,CHEN Peiyu,LI Qian,JIN Yu
Abstract:Driven by the dual-carbon goals,to effectively reduce the carbon emissions of flexible DCinterconnected microgrids cluster and enhance the flexibility of system control,a low-carbon control strategy wasproposed. Firstly,a topology of flexible DC interconnected microgrids cluster was proposed,and the carbone...
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Number of views:1040 Amount of downloads:4559
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HE Long,MA Jincai,ZHU Yongming
Abstract:The contact electrical contact fault of gas insulated switchgear(GIS)will affect its electricalperformance. A multi-physics coupling model of GIS contact vibration was first established to address the difficultyin diagnosing contact faults. An experimental platform for high-current detection of GIS was buil...
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Number of views:1019 Amount of downloads:8180
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SU Qili,LIU Jiayi,RUAN Peng,ZHANG Liuli,ZHAO Yayi,XIAO Qian
Abstract:With the large-scale access of a high proportion of new energy,the frequency and voltage stabilityof the distribution network has significantly decreased. Therefore,an optimal configuration method for energystorage in the distribution network considering the improvement of frequency-voltage stability was pr...
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Number of views:1001 Amount of downloads:5396
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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:961 Amount of downloads:4353
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ZHAI Bingxu,ZHAO Yansong,GUO Yuchen,LI Yuanzhuo,JIANG Zhilin,XIAO Qian
Abstract:Under the carbon peaking and carbon neutrality goals,the high integration of new energy sourceslike photovoltaics(PV)into the power system makes it difficult for traditional dispatching schemes to effectivelyhandle their randomness and volatility in output. PV curtailment occurs frequently and local counter...
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Number of views:904 Amount of downloads:5504
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WANG Mingshen,PAN Yi,MIAO Huiyu,HAN Huachun,ZENG Fei,YUAN Xiaodong
Abstract:In response to the problems of insufficient consideration of charging pile resource constraints,lowpracticality of time-domain discrete models,and inadequate description of peak shaving capabilities in the currentoptimal scheduling of electric vehicles at charging stations,an optimal scheduling and peak sha...
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Number of views:720 Amount of downloads:5146
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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:504 Amount of downloads:4593