Reliability and diagnosis
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ZHANG Pengcheng,TUSONGJIANG Kari,WANG Hailong,YILIHAMUYaermaimaiti,LU Haotan,RUAN Jiayang
Abstract: In order to improve the accuracy of automatic reading of tilted meter images,a novel algorithmbased on ORB and improved region growing method was presented. Firstly,the ORB algorithm was applied to detect the feature points of the target image and the template image,and the transformation matrix used to ac...
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Number of views:332 Amount of downloads:365
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SUN Zhenqin,QU Jianhua,ZHANG Zhenzhen,QUAN Xiao,LI Hongbin,TAN Peng
Abstract: In order to improve the measurement accuracy of the position and speed closed-loop of the brushlessDC motor,which is currently used in the attitude control actuator,a new cumulative pulse M/T method wasproposed,based on incremental off-axis magnetic encoder(AS5304A)and TMS570 chip internal integratedenhance...
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Number of views:347 Amount of downloads:411
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LI Zhijuan,WU Dan,LEI Ting,WANG Ning,DUAN Yan,MA Hongen
Abstract: Aiming at the problems of frequent failures and untimely maintenance of DC charging pile,a faultearly warning method of DC charging pile based on soft classification model was proposed. Based on the currentsequence and voltage sequence of the charging pile in the charging process,the differential sequence o...
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Number of views:301 Amount of downloads:346
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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:336 Amount of downloads:386
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SONG Hui,YUAN Longxiang
Abstract: Aiming at the problem of single hot spot temperature under average state and long response timeunder different load states,in order to improve the response speed,a 10 kV transformer load state detection method based on K-means algorithm was designed. The 10 kV transformer load model was established,the ove...
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Number of views:452 Amount of downloads:587
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PENG Daogang,GAO Yimin,QI Erjiang,ZHOU Yang,WANG Yongkun
Abstract: Oil spills from thermal power plants can pollute the drainage outlet,if not dealt with in time,it willalso pollute the river environment. Drainage outlet monitoring is from the angle of depression,therefore it is hard to identify accurately with the rectangular detection frame. Based on the image from the ...
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Number of views:457 Amount of downloads:556
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YANG Yanfang,LIANG Zhonghao,ZHANG Meiling,LIU Jiayi
Abstract: Aiming at the problem of low accuracy and comprehensiveness of current identification methods,amethod of reverse power anomaly identification in digital electric energy meter information sampling was proposed.Through the data acquisition system,the digital electric energy meter information sampling work was...
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Number of views:624 Amount of downloads:684
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ZHANG He,CAO Tianbi,LI Xianyun
Abstract: In view of the complex transient characteristics of short-circuit faults in DC power network and thedifficulty of fault identification,the short-circuit faults in DC power network can be identified by detecting the change of capacitance voltage through the analysis of the VSC topology and switch characteri...
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Number of views:642 Amount of downloads:678
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WANG Jie,JIN Weigang
Abstract: In view of the difficulty in detecting the uniform and non-uniform contamination of high voltage(HV)glass insulators and the inaccuracy of risk assessment,a risk assessment method for HV glass insulatorsbased on a new leakage current indicator Rhi was proposed. The new leakage current index Rhiwas derived ...
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Number of views:961 Amount of downloads:692
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GU Zhen,ZHUANG Gewei,HE Qing,ZHOU Lei,AN Bailong,DUAN Yan
Abstract: Accurate identification method of abnormal electricity users can provide reference for power supplyenterprises to lock in electricity theft or other violations of power users. Most abnormal user identification modelsbased on machine learning adopt unsupervised algorithms,but the accuracy of the models is l...
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Number of views:967 Amount of downloads:706
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ZHANG Jinbo,YAN Lei,SHI Jian,HUANG Xiaoyu,YANG Dishan,YAN Tongyu
Abstract: A large number of voltage fluctuations will occur in the grounding process of optical storage DCmicrogrid,which has a bad impact on the stability of microgrid power signal. Due to the poor voltage disturbancesignal capture ability of the present optical storage DC microgrid grounding anti-interference tech...
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Number of views:1355 Amount of downloads:763
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SHI Shaoqing,ZHANG Leping,ZHANG Bensong,WU Haowen,LIAN Xinkai,DU Shushuai
Abstract: In order to apply the smart meters with load identification technology into real application,a nonintrusive load identification method using Mean-shift clustering algorithm with siamese network framework wasproposed. In this method,the load event was carried out for extracting the features,including active...
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Number of views:1401 Amount of downloads:945
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DING Zancheng,WANG Dajun,LI Wanxiang
Abstract: In view of the problem that the dangerous points in transmission lines affect the stability of powersystem,the technology of identifying and controlling the transmission line dangerous points based on multidimensional perception was studied,which can control the transmission line risk in time,reduce noise ...
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Number of views:1629 Amount of downloads:944
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CAOWei,GUI Shicheng,HUANG Ruanming,HE Bilun,QIN Huancheng
Abstract: With the expansion of the interconnection scale of the power system,the impedance ratio of thepower grid increased gradually,thereby the breaking capacity of the circuit breaker was affected by the increasingattenuation time constant of the DC component of the short-circuit current .At present,the periodic...
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Number of views:1512 Amount of downloads:876
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ZHANG Feifei,ZHANG Jun,WU Long,WU Xiaohui,XUE Zhanbo
Abstract: In order to solve the problems of false alarm rate and missing alarm rate in the traditional faultdetection method of substation primary equipment,a fault detection method of substation primary equipment based on deep convolution neural network was proposed. The substation primary equipment image and scene...
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Number of views:1474 Amount of downloads:851