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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...
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Number of views:163 Amount of downloads:122
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LIU Zhipeng,QU Zhe,YU Cong,WU Qian,CHEN Bo,FANG Yaqi
Abstract:Over the years,machine learning has made some breakthroughs in the insulation defects of gasinsulated switchgear(GIS),but the traditional methods have the disadvantages of incomplete information,excessive reliance on artificial feature extraction and low diagnosis rate. In order to solve these problems,adia...
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Number of views:180 Amount of downloads:120
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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:163 Amount of downloads:118
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CAI Xinlei,WANG Qin,CHEN Yefu,MENG Zijie,SONG Dongkuo
Abstract:The high proportion of renewable energy system is an inevitable choice to achieve the dual carbontarget,but the uncertainty of wind and solar output will cause serious wind and light abandonment. With thedeepening reform of the electricity market,the demand-side response has also attracted much attention. I...
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Number of views:196 Amount of downloads:117
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XIE Jijin,HUANG Wendong,SHEN Kang,LIU Bin,MENG Ningjia,ZHANG Yuanyuan
Abstract:In order to improve the compensation effect of LCL-type shunt active power filter,a frequencyadaptive decimal delay repetitive control based on IIR filter was proposed. The resonance suppression loop of LCLwas designed through root locus and the design result was used as a new control object for repetitive ...
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Number of views:174 Amount of downloads:114
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BAI Luwei,DONG Yongle,ZHANG Lifang,MAO Yongmei,YIN Chao,XI Jia
Abstract:Security is a critical concern that must be addressed in the context of the electric power meteringinternet of things(IoT). In order to achieve complete isolation between data stored in the public cloud(externalnetwork)and data stored in the private cloud(internal network),while enabling unidirectional comm...
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Number of views:168 Amount of downloads:114
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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:167 Amount of downloads:114
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LI Jiayu,HAN Yuan,WANG Jianjun,PAN Yue
Abstract:Modular multilevel matrix converter(M3C)is a multilevel topology that can directly realize ACACconversion,which has good application prospects in high-voltage transmission systems and DC distributionsystems,but the existence of bridge-arm circulating channels inside the M3C leads to a very complex controlst...
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Number of views:136 Amount of downloads:112
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YANG Yan,LIU Tong,JIN Panlong,QI Caijuan
Abstract:In order to solve the problem that the time-of-use price is not taken into account in the calculation ofthe peaking cost in the case of a large number of renewable energy sources,a method of calculating the peakingcost of power system with time-of-use price was proposed. First,the key scenarios of power gri...
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Number of views:110 Amount of downloads:110
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HE Yongpeng,WANG Mingyue,WANG Yubo,WANG Chunhui,ZHAO Zesheng
Abstract:Based on the parallel structure of high-power converter system,a high real-time and highsynchronization optical-fiber communication scheme was proposed. The on-fly transmission ensures that thecommunication between the controllers has a low delay,and the clock synchronization algorithm compensates thetime-d...
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Number of views:163 Amount of downloads:109
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LU Lin,KONG Fanting,ZHANG Chunxiang,CHEN Jian,WANG Lianjie
Abstract:Static var generator(SVG)can governance power quality,energy conservation and reduceconsumption,furthermore it is an energy consumption product.The reasonable evaluation of the energy saving ofthe device has become an urgent problem to be solved. The power saving measurement technology of products wasstudie...
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Number of views:160 Amount of downloads:107
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LIU Yanlong,HAN Pingping,CHEN Xiaoguang,GUO Jialin
Abstract:With the increasing penetration of new energy equipment,while alleviating the environmentalproblems caused by fossil energy,it also increases the frequency instability of the system. Photovoltaic(PV)andother new energy equipment to participate in the grid frequency regulation is an effective way to improve ...
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Number of views:102 Amount of downloads:105
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YANG Lei,WANG Xianjun,WANG Zijian,ZHAO Weihua,LI Peng,LI Mengxi
Abstract:As the penetration rate of household distributed PV in China's low-voltage distribution networkcontinues to increase,the power flow of the distribution network has changed,leading to more serious problemssuch as node voltage overruns and three-phase imbalance,which poses a serious threat to the safe and...
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Number of views:105 Amount of downloads:102
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WANG Hao,LIU Naisuo,MENG Chao,FAN Ronggui,GONG Junlin,GAO Lianyan
Abstract:In order to solve the problem that the electrical cabinet of the original production and injectionsystem in the same well has a low intelligence level and cannot realize remote monitoring,diagnosis,restart andmaintenance through the network,an intelligent control software for production and injection in the...
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Number of views:151 Amount of downloads:101
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RUAN Bo,YI Bonian,YE Xuecheng,LE Jian,LANG Hongke,REN Yi
Abstract:The electricity power price setting mechanism will be fundamentally reformed with the continuousadvancement of a new round of electricity market-oriented reform. Presently,some provincial and regional powergrid enterprises are facing the problem of large fluctuations in electricity prices,which is not condu...
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Number of views:106 Amount of downloads:97