Reliability and diagnosis
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DAI Feng，CHEN Xuan，WANG Lixian，MA Hongzhong
Abstract: Partial discharge fault diagnosis and location of gas insulated metal enclosed transmission line（GIL）is of great significance for its internal insulation protection. Because GIL is fully enclosed structure，theexisting external detection method is not sensitive to the internal defect detection，so it is unab...
更多Number of views：3360 Amount of downloads：5683
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ZHUANG Gewei，GU Zhen ，FENG Xiuqing ，DUANYan
Abstract: Automatic verification system of smart meter may be abnormal in the long-term operation process，but the regular manual detection method can not timely learn the risk information，shortening the period of manual inspection will reduce the work efficiency of automatic verification. In most cases，the sample da...
更多Number of views：3388 Amount of downloads：5011
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LU Wu，ZHENG Renjie，ZHAO Wenbin，TANG Jiayuan
Abstract: Efficient and accurate short-term load forecasting is essential to the safe and stable operation of thepower system. A combined prediction model based on empirical mode decomposition（EMD）and gated recurrentunit（GRU）was proposed. First，the date factors ，meteorological factors and historical load factor were...
更多Number of views：3589 Amount of downloads：5668
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ZHANG Yi，CHANG Pengfei
Abstract: With the increasing penetration of large-scale wind and PV power within the power system，theywill inevitably participate in the load frequency contro（l LFC）. Since the power output of wind and PV is unstable，which would affect the power balance of grid，thus cause unstable frequency. A LFC method based on d...
更多Number of views：3584 Amount of downloads：5647
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CHEN Linghan，LU Jia
Abstract: As the hub node in the energy internet，the transformer can adjust and control power quality，thenormal and stable operation of transformer is of great significance to the safe and stable operation of the energyinternet. In order to accomplish this objective，status assessment of energy internet transformer b...
更多Number of views：3502 Amount of downloads：5698
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YANG Liping，WANG Haiyun，DING Dong，YU Xijuan，WANG Liyong，WU Honglin
Abstract: At present，there are some problems in line loss fault detection of electric quantity informationacquisition equipment，such as low detection rate，poor applicability and so on. An automatic line loss faultdetection method for electric quantity information acquisition equipment was proposed. By determining th...
更多Number of views：3562 Amount of downloads：6161
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YU Zhongan，CHEN Miao，DING Wensu，LIN Shangrong
Abstract: The traveling wave fault location of traditional double-circuit transmission lines are mainly studiedon the model with symmetric parameters. In order to solve the problem of traveling wave fault location of doublecircuit lines on the same tower with asymmetric parameters in engineering practice，a fault loc...
更多Number of views：3581 Amount of downloads：6062
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HUANG Xu，LIU Yichao，ZHU Hanqing，LIU Yang
Abstract: The DC fault current calculation method of modular multilevel converter（MMC）is the key to studythe DC fault transient characteristics and isolate the fault point rapidly in VSC-HVDC grid. Firstly，aiming at twotypical MMC fault equivalent models，the topology and the capacitor voltage characteristics when th...
更多Number of views：4581 Amount of downloads：6927
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LÜ Wei，WANG Han，ZHANG Jianwen，CHEN Gen，CAI Xu
Abstract: Compared with onshore wind power，the natural conditions at sea are bad and the traffic isinconvenient to maintain the wind power system，so wind power system needs to be highly reliable. The systemreliability can be effectively improved by using fault-tolerant control. A fault-tolerant control strategy by i...
更多Number of views：4233 Amount of downloads：7810
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GU Zhongfan，CHENYuwei，LI Cheng′ao，ZHANG Dechun，HUANG Hai
Abstract: The 3.5 V/20 A•h lithium iron phosphate battery was taken as the research object.Aiming at the onlineestimation of its state of charge（SOC），the second-order Thevenin equivalent RC circuit model was established，and a joint SOC estimation algorithm was proposed by combining BP neural network，dynamic forgetti...
更多Number of views：9254 Amount of downloads：18813
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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...
更多Number of views：4022 Amount of downloads：4956
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ZHANG Dewang，CHEN Zhigeng，ZHANG Zhichao，ZHOU Yu
Abstract: Traditional point prediction is difficult to analyze the randomness and uncertainty of wind powerinadequately. Aiming at the shortcomings of point prediction，an interval prediction model based on improvedwhale optimization algorithm and fast learning network（IWOA-FLN）was proposed. Firstly，the convergencesp...
更多Number of views：3998 Amount of downloads：5961
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WU Weikun，GONG Shiying，ZHENG Yaohua，SHAN Chao，DONG Chuanyou
Abstract: In order to intelligently identify crosslinked polyethylene（XLPE）cable faults in high noiseenvironment，a method of XLPE cable fault identification based on deep residual shrinkage network was proposed.In this method，the soft threshold was embedded into the deep structure of the network as a nonlineartransf...
更多Number of views：3849 Amount of downloads：6690
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CHAI Bin，SHI Lei，LIU Zhiyuan，XU Hui
Abstract: The circuit breaker of AC filter in converter station is an important part of HVDC system. Theoccurrence of internal faults will directly affect the stable operation of HVDC system. In view of the fault diagnosisof the circuit breaker for filter，an efficient online monitoring method was proposed to diagnos...
更多Number of views：8647 Amount of downloads：18764
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SONG Zhuoran，LI Jianfeng，JIANG Tao，DENG Xinyang，LIU Yu
Abstract: There are parameter identification errors in the process of distribution network synchronousmeasurement configuration. The optimal configuration method of distribution network synchronous measurementdevice based on parameter identification accuracy was studied. Based on the measurement data of the synchron...
更多Number of views：4478 Amount of downloads：6921
