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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:1667 Amount of downloads:5020
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LÜ Zhengyu,ZHOU Liang
Abstract: In the process of controlling the voltage of active distribution network,there are problems of poorvoltage control effect and low efficiency. A two-stage automatic voltage control method of active distributionnetwork considering load measurement was proposed. Using the probability density function (PDF) cu...
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Number of views:2069 Amount of downloads:5002
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ZHOU Yufan,GAO Hui,LONG Yi
Abstract:To cope with the impact of electric vehicle(EV)charging loads on the power grid and achieve abalance of interests between the power grid,charging station and users,a customized charging strategy for EVs that takes dynamic electricity prices into consideration was proposed. Initially,the dynamic pricing mech...
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Number of views:2326 Amount of downloads:5000
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ZHANG Xiaolian,WU Qichuan,HAO Sipeng,Qin Shiqiu,HU Qi,ZHANG Jinhua
Abstract:The participation of wind power and energy storage in primary frequency regulation of power gridcan make better use of the advantages of wind power and energy storage for frequency regulation,which hasgradually become a new trend. However,there are some problems in the coordination of wind power system ande...
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Number of views:1501 Amount of downloads:4996
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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:1042 Amount of downloads:4995
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XIAO Quan,ZHOU Xiaoshan,WANG Ruiqing,LIU Yuqi,ZHAO Xianyuan
Abstract: The excitation control module of synchronous generator is the key equipment for power productionand safe operation,and the localization rate of its key materials is low. Based on the control performance of thesynchronous generator excitation control module,starting from the research of chip independent con...
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Number of views:2276 Amount of downloads:4992
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HUANG Feng,CUI Zhimei,HUANG Zhidu,JIANG Shengchao,FENG Bo
Abstract: In order to evaluate the safety status of transmission lines scientifically and objectively,a safetyanalysis model of transmission lines based on support vector machine-back propagation(SVM-BP)hybrid networkwas proposed. Firstly,the weather data,transmission line standard documents and defect data were pro...
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Number of views:2111 Amount of downloads:4985
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LI Chasen,WANG Daihua,ZHANG Qiang,TANG Hong
Abstract: The crankshaft is an important component that determines the life of an internal combustion engine.It bears compound alternating stress for a long time,so it is easy to produce fatigue failure. Aiming at the shortageof crankshaft dynamic stress testing methods,a stress testing system with long endurance an...
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Number of views:4030 Amount of downloads:4971
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ZHAO Fajin,SHU Zhengyu,WANG Can,LIU Wencan ,HUANG Qiyun
Abstract:Accurate and efficient multi-load forecasting is of great significance for the operation control andscheduling of integrated energy system(IES),in order to improve the load forecasting effect,a integrated energysystem load prediction model based on least absolute shrinkage and selection operator(LASSO)and L...
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Number of views:1727 Amount of downloads:4965
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CHEN Zheng,WU Yangjin,HUANG Dingjie,WANG Chaojun,FU Xinhui
Abstract:Under the background of limited resources and time,equipment maintenance is considered as aneffective way to maintain the stable operation of the system. In order to allocate maintenance resources efficiently,the most critical equipment in the system should be identified first namely those that will cause s...
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Number of views:1708 Amount of downloads:4957
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LI Linwei,FU Zhimin,CHEN Mingfan,HE Lipeng,QIN Dan,HUANG Lige,CHENG Xi
Abstract: With the opening of the electricity market,the scattered and high idle rate of distributed energystorage has realistic conditions to participate in the aggregation and reuse,and the aggregation process caneffectively improve the efficiency of the power grid. The electric vehicles were taken as a typical re...
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Number of views:2826 Amount of downloads:4953
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TIAN Kai,YU Zhibin,YUAN Yuan,CHU ZiLin,CHEN Yujie,SUN Chuanjie
Abstract: A test method was proposed that can evaluate the ultimate power output capability of large capacityIGCT three-level converter. Based on synchronous symmetrical PWM modulation and temperature estimationmodel,the power experiment of IGCT three-level converter was carried out,which can test the equipment capa...
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Number of views:2392 Amount of downloads:4936
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PENG Yanlai,FAN Yong,YANG Xiaofeng,YANG Hongyu,WANG Zhixin
Abstract: Aiming at the problems that the amount of data in wind farm SCADA data is huge and it is difficultto classify the fast fault of wind turbine generator,a dynamic threshold AdaBoost algorithm(DTAdaBoost)wasproposed. Based on AdaBoost algorithm,the dynamic threshold was introduced to screen the sample set dat...
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Number of views:1994 Amount of downloads:4915
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JIANG Jingwen,ZHOU Jiemin,HONG Feng,ZHENG Gang
Abstract: On the basis of LLC,considering from the perspectives of soft-switching technology,DC/DCcascade converter technology and three-level technology,a new DC/DC composite cascade structure topology onthe basis of Buck-LLC structure was proposed. A 980 W prototype was designed and built for verification,whichpro...
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Number of views:2091 Amount of downloads:4911
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XU Deshu,LIU Yanfang,ZHAO Hao,MA Zhiqiang
Abstract:The integrated energy system contains adjustable resources and flexible operating modes,which to acertain extent play a supporting role in the power grid and assist in optimizing its operation. Based on this,anoptimal operation model of integrated energy system considering support capacity to power grid was...
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Number of views:1409 Amount of downloads:4899