Reliability and diagnosis
Current location:Home >Reliability and diagnosis
-
HU Xiaoyu,ZHOU Yuanxiang,CHEN Jianning,ZHAO Yunzhou,LIU Jun
Abstract: As a new type of insulating oil in the power industry,natural gas insulating oil is excepted to solvethe bottleneck problem of high-quality transformer oil's insufficient supply in the future. However,its electricalparameters including partial discharge withstand strength and sweep frequency spectrum c...
更多
Number of views:1477 Amount of downloads:798
-
HE Hengjing,ZHOU Shangli,ZHANG Bensong,XIE Wenwang,LIAN Xinkai,XU Haotian
Abstract: In order to apply the non-instrusive load montiring technology into the new generation of smartmeter,a kind of method based on the BP neural networks enhancement algorithm of clustering for loadidentification was presented. In this method,each feature was relatived to the corresponding cluster based on the...
更多
Number of views:1680 Amount of downloads:855
-
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:1624 Amount of downloads:856
-
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:1747 Amount of downloads:834
-
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:1795 Amount of downloads:912
-
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:1881 Amount of downloads:830
-
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:1880 Amount of downloads:858
-
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:1888 Amount of downloads:834
-
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:1916 Amount of downloads:828
-
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:2444 Amount of downloads:1062
-
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:2349 Amount of downloads:991
-
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:3715 Amount of downloads:2522
-
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:2282 Amount of downloads:955
-
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:2277 Amount of downloads:998
-
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:2211 Amount of downloads:937