Reliability and diagnosis
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DENG Guimei，ZHANG Yue，HE Yongpeng，ZHAO Haixu，YU Hongze
Abstract：In order to study the operating characteristics of onboard power net of high-speed maglev train，anautomated networking test system based on LabVIEW was developed on the basis of several independent onboardpower net test systems. Through the comprehensive simulation of the external power supply of the train，...
更多Number of views：356 Amount of downloads：327
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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...
更多Number of views：454 Amount of downloads：361
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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...
更多Number of views：441 Amount of downloads：374
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KAN Chaohao，YAO Xiaojian，QI Ankang，WANG Zhisheng， WANG Pengcheng，CHEN Gong
Abstract：Three-phase asynchronous motor is one of the most frequently used motors. Inter-turn short circuitfault is a kind of fault with high probability. If the real-time monitoring of motor operation，health and safetyevaluation of the operation，will be able to timely stop losses，reduce losses. An inter-turn fault ...
更多Number of views：535 Amount of downloads：424
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CHU Wenchao
Abstract:Transmission line tower as the normal operation of the power system of the necessary equipment，itsgrounding resistance accurate detection for the safe and stable operation of the entire power system is particularlyimportant，especially in the judgment of lightning protection performance and other aspects. Th...
更多Number of views：417 Amount of downloads：451
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WANG Qi，DONG Xinsheng，HE Shan
Abstract：To address the issue of transient overvoltage at the sending end of the wind farm caused by faults inconventional high-voltage direct current systems system，the impact mechanism of DC faults on transient voltagechanges at the sending end was analyzed. It was discovered that the reactive power surplus of the...
更多Number of views：563 Amount of downloads：366
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ZHANG Wei
Abstract：The multi-source monitoring data of switchgear contains rich equipment operating statusinformation，and analyzing it can achieve switchgear fault diagnosis. A fault diagnosis method for switchgear basedon SMOTE-SSA-CNN was proposed. Firstly，based on monitoring data such as switchgear voltage，current，andtempe...
更多Number of views：580 Amount of downloads：700
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LI Wei，LI Yingqi，HOU Leihao，LI Junpeng，LIU Dejian
Abstract：The main circuit faults of the four-quadrant rectifier and the corresponding influences were analyzedand summarized，focusing on the analysis of the voltage and current parameter equations in the pre-chargingprocess of the intermediate DC link，and the estimation method of the converter input current and the ...
更多Number of views：455 Amount of downloads：483
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LIU Jinwei，ZHOU Jie，LI Chuan，XIAO Xiao，WU Huicheng
Abstract：In order to improve the accuracy of intelligent diagnosis of reactor mechanical fault，according tothe correlation characteristics between reactor vibration signal and mechanical state，a vibration diagnosis methodof reactor mechanical fault based on stacked auto-encoder（SAE）was proposed. Firstly，the original...
更多Number of views：685 Amount of downloads：401
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HAN Shaohua，MAO Wangqing，GE Xuan，XU Lei，CHEN Ken，LIANG Rui
Abstract：Compared with large photovoltaic systems with isolation transformers，distributed photovoltaicsystems have small power and volume. In order to improve efficiency，non-insulated inverters are often used indesign，but photovoltaic leakage current endangering system safety is also generated. Taking the single-pha...
更多Number of views：477 Amount of downloads：401
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TIAN Zhidan，YU Xiang，WAN Haibo
Abstract：In order to solve the problems of high subjective misjudgment rate and low efficiency in manualhand touch and auscultation methods for acoustic quality detection of micro motors，while taking into account theaccuracy of detection results and the fast construction of detection models，a small sample machine le...
更多Number of views：561 Amount of downloads：457
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YU Shengcan，YU Tao，FENG Miaoyong
Abstract：Accurately and quickly identifying the fault types of traction transformers is a key technology forintelligent operation and maintenance. Aiming at the problems of single model deviation in the current traditionalalgorithm and the constraints between the iteration rate of complex models and the deployment o...
更多Number of views：838 Amount of downloads：493
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LI Yunwang，CHEN Junde，ZHANG Daping，SANG Yun，HAN Xiaolei
Abstract：An adaptive active arc suppression method based on S-transform correlation degree for distributionnetwork unidirectional grounding was proposed to effectively eliminate single-phase grounding fault arc indistribution network and improve power system stability. The time series data of zero-sequence current o...
更多Number of views：811 Amount of downloads：435
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LI Xinhai，LUO Qifeng，ZENG Qingzhu，ZENG Xinxiong，YAN Chao
Abstract：The detection of composite insulator defects in substations still relies on inspection by operators，which is a heavy workload and prone to leakage due to visual fatigue. To reduce the computational resourceconsumption and shorten the training time，the region convolutional neural networks（RCNN）was improved b...
更多Number of views：550 Amount of downloads：490
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QIN Gang，ZHANG Changqing，JIANG Xuejiao，ZHONG Lei，ZHOU Chaojun，WU Min
Abstract：During the operation of high-voltage DC power grid，due to factors such as load characteristics andvoltage fluctuations，the instantaneous power characteristics such as capacitor current and harmonics are morecomplex，which increases the difficulty of identifying faults in the power grid system. Therefore，a bi...
更多Number of views：535 Amount of downloads：455
