2018 Condition Monitoring and Diagnosis (CMD)最新文献_第8页

Real-time Transformer Diagnosis using Voltage-Current Signal over Cloud Environment 云环境下电压电流信号的实时变压器诊断

2018 Condition Monitoring and Diagnosis (CMD) Pub Date : 2018-09-01 DOI: 10.1109/CMD.2018.8535876

A. Smagulova, Aigerim Borasheva, Nurtas Moldiyar, Nurbolat Bazarbek, M. Bagheri, B. Phung

引用次数: 0

Effects of Temperature on Surface Charge Behavior of Fluorinated Oil-impregnated Paper under the Coupling of DC and Pulse Voltages 直流电压和脉冲电压耦合下温度对氟化油浸纸表面电荷行为的影响

2018 Condition Monitoring and Diagnosis (CMD) Pub Date : 2018-09-01 DOI: 10.1109/CMD.2018.8535645

W.B. Zhu, B. Du, J. Li, J. Jiang, H. He, W. Li, L. Wei, X. C. Wang, H. Du

{"title":"Effects of Temperature on Surface Charge Behavior of Fluorinated Oil-impregnated Paper under the Coupling of DC and Pulse Voltages","authors":"W.B. Zhu, B. Du, J. Li, J. Jiang, H. He, W. Li, L. Wei, X. C. Wang, H. Du","doi":"10.1109/CMD.2018.8535645","DOIUrl":"https://doi.org/10.1109/CMD.2018.8535645","url":null,"abstract":"The oil-impregnated paper plays a critical role in the reliability and safety of converter transformer, which is suffered by the accumulation of charges on oil-impregnated paper, leading to distorting the electric field and overvoltage. In addition, the problem of temperature rise is more prominent in contrast with the power transformer, which is attributed to the DC magnetic bias and harmonic current. As a consequence, the performance deterioration of oil-impregnated paper is a comprehensive result from multiple factors including thermal stress and electric field. Surface fluorination has obvious effect on the characteristics of the insulating material based on our previous work. This paper is dedicated to research effects of temperature on the charge characteristic of fluorinated oil-paper insulation under the coupling of DC and pulse voltage. The conclusions can be drawn that The strong electronegativity of fluorine and the tiny voids generated by fluorination contributes to capturing carriers for inhibiting the increase level of carrier mobility. The temperature rise has more influence in modifying the trap depth of the fluorinated paper in contrast with the trap density.","PeriodicalId":6529,"journal":{"name":"2018 Condition Monitoring and Diagnosis (CMD)","volume":"1 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75873609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Moisture Content on Dynamic Characteristics of Space Charge in Oil-paper Insulation under AC Field 交流电场下含水率对油纸绝缘空间电荷动态特性的影响

2018 Condition Monitoring and Diagnosis (CMD) Pub Date : 2018-09-01 DOI: 10.1109/CMD.2018.8535898

Jiaxuan Xu, Yunkun Deng, Yi Ma, Fengli Li, Jiandong Wu, Y. Yin

{"title":"Effect of Moisture Content on Dynamic Characteristics of Space Charge in Oil-paper Insulation under AC Field","authors":"Jiaxuan Xu, Yunkun Deng, Yi Ma, Fengli Li, Jiandong Wu, Y. Yin","doi":"10.1109/CMD.2018.8535898","DOIUrl":"https://doi.org/10.1109/CMD.2018.8535898","url":null,"abstract":"Oil-impregnated pressboard samples with water content of 0.34%, 0.98% and 1.81 % were used to investigate the effect of moisture content on dynamic characteristics of space charge under AC stress. Space charge contribution were observed by a fast space charge detecting system based on the automatic equipartition phase shift (AEPS) principle. It shows that space charges are injected from the top electrode for the sample with moisture content of 0.34%. The peak value of homo-charge in both electrodes significantly increase for the sample with moisture connect about 0.98%. It may be associated with the reduction of the charge injection barrier between oilpaper insulation and electrode. And the injection speed for ground electrode increases more than the injection speed for top electrode. This is because the material of two electrodes are different, and the energy level of charges in ground electrode is higher. With moisture content increases, the depth of traps within oil-paper may increase, lead to charges injected from ground electrode easier to be trapped. As moisture content rises from 0.98% to 1.81%, the space charge accumulation phenomena after charge injection and extraction in AC positive half-period is dominated by homo-charge injected from ground electrode, and may suppress the electric field distortion near ground electrode.","PeriodicalId":6529,"journal":{"name":"2018 Condition Monitoring and Diagnosis (CMD)","volume":"53 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76017273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Investigation on Ageing Parameters of a Thermally Accelerated Aged Paper-Oil-Insulation in a Hermetically Sealed System 密封系统中热加速老化纸绝缘油老化参数的研究

2018 Condition Monitoring and Diagnosis (CMD) Pub Date : 2018-09-01 DOI: 10.1109/CMD.2018.8535626

T. Münster, T. Kinkeldey, P. Werle, K. Hämel, J. Preusel

{"title":"Investigation on Ageing Parameters of a Thermally Accelerated Aged Paper-Oil-Insulation in a Hermetically Sealed System","authors":"T. Münster, T. Kinkeldey, P. Werle, K. Hämel, J. Preusel","doi":"10.1109/CMD.2018.8535626","DOIUrl":"https://doi.org/10.1109/CMD.2018.8535626","url":null,"abstract":"This study is conducted to investigate the influence of a hermetically sealed system and as a consequence thereof the effect of missing oxygen from the ambient air on the relevant ageing markers of three different insulating liquids, to determine the correlation between those ageing markers and the condition of the paper insulation. In this regard, paper samples are impregnated with a non-inhibited and two different inhibited insulating oils having different oil components as well as different inhibitor contents, which are currently used. Although different papers from the past have shown investigations on ageing of oilpaper systems [1]–[4] usually oil was used, which is no longer available today and furthermore no simultaneous comparative study was carried out in the past, as it is presented in this paper. For this study, a hermetically closed system is reproduced, so that a permanent contact with the ambient air is avoided. The entire study extends over a period of 15 weeks at a temperature of 130°C. Accordingly, the study is done for a long-term thermal stress to obtain paper insulations with a wide spectrum of ageing status. The same measurement was also done for an open system, which will be presented in another paper. Oil sampling is performed routinely and parameters like the moisture content, the amount of acid as well as the interfacial tension (IFT) etc. are determined. Furthermore, the DP-value of the paper samples, impregnated with the different oils, is also measured to get information about the actual paper condition. The investigation shows that the oil types influence the ageing process of the insulation system and consequently the production of respective parameters. Moreover, the correlation between the considered oil parameters and ageing status of paper is evaluated and it shows that an assessment of the actual paper condition is possible.","PeriodicalId":6529,"journal":{"name":"2018 Condition Monitoring and Diagnosis (CMD)","volume":"22 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75918639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Development of UHF Sensors for Partial Discharge Detection in Power Transformer 电力变压器局部放电检测超高频传感器的研制

2018 Condition Monitoring and Diagnosis (CMD) Pub Date : 2018-09-01 DOI: 10.1109/CMD.2018.8535779

Hua Chai, B. Phung, Daming Zhang

引用次数: 19

Determination of Type of Partial Discharge in Cubicle-Type Gas Insulated Switchgear (C-GIS) using Artificial Neural Network 用人工神经网络确定小隔间气体绝缘开关柜局部放电类型

2018 Condition Monitoring and Diagnosis (CMD) Pub Date : 2018-09-01 DOI: 10.1109/CMD.2018.8535657

Taufik Rossal Sukma, U. Khayam, Suwarno, Ryouya Sugawara, Hina Yoshikawa, M. Kozako, M. Hikita, Osamu Eda, Masanori Otsuka, Hiroshi Kaneko, Yasuharu Shiina

{"title":"Determination of Type of Partial Discharge in Cubicle-Type Gas Insulated Switchgear (C-GIS) using Artificial Neural Network","authors":"Taufik Rossal Sukma, U. Khayam, Suwarno, Ryouya Sugawara, Hina Yoshikawa, M. Kozako, M. Hikita, Osamu Eda, Masanori Otsuka, Hiroshi Kaneko, Yasuharu Shiina","doi":"10.1109/CMD.2018.8535657","DOIUrl":"https://doi.org/10.1109/CMD.2018.8535657","url":null,"abstract":"Partial discharge (PD) measurement is performed as one of diagnostic tool for condition monitoring in cubicle-type gas insulated switchgear (C-GIS). This paper presents artificial neural network (ANN) to identify the type of PD occurring in C-GIS. PD measurement results obtained from C-GIS in a field were fed to the ANN as input parameters to determine the type of PD or external noises. The C-GIS consists of two compartments of power cables and two compartments of transformers. PD measurements were conducted in the C-GIS using a commercial PD measurement system consisting of an oscilloscope and three different kinds of sensors (transient earth voltage sensor, surface current sensor and high frequency current transformer) to generate input signal waveform parameters for ANN (field data). An attempt was made to locate the PD source using the output of the sensors set at different sites. PD measurements using four kinds of artificial PD sources were also conducted in laboratory using the same PD measurement system to obtain another signal waveform parameters (laboratory data) which were used for training the ANN. Thereafter, an attempt was also made to identify PD source occurring in C-GIS using field data as input for the trained ANN. As a result, the developed ANN was found to predict the kind of PD source as void-discharge with 99% probability.","PeriodicalId":6529,"journal":{"name":"2018 Condition Monitoring and Diagnosis (CMD)","volume":"1 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81251575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Research on leakage current analysis of DC cable based on wavelet packet multi - scale decomposition 基于小波包多尺度分解的直流电缆泄漏电流分析研究

2018 Condition Monitoring and Diagnosis (CMD) Pub Date : 2018-09-01 DOI: 10.1109/CMD.2018.8535922

Zehao Chen, Chen Wu, R. Fang, Zhe Li, G. Sheng, Xiuchen Jiang

引用次数: 0

Simulation on Propagation Characteristics of Optical Signals of Partial Discharge in Single-core and Three-cores GIL 单芯和三芯GIL中部分放电光信号传输特性的仿真

2018 Condition Monitoring and Diagnosis (CMD) Pub Date : 2018-09-01 DOI: 10.1109/CMD.2018.8535943

Xue Qin, Honglin Zhao, Qi Zhang, Y. Qian, G. Sheng, Xiuchen Jiang

{"title":"Simulation on Propagation Characteristics of Optical Signals of Partial Discharge in Single-core and Three-cores GIL","authors":"Xue Qin, Honglin Zhao, Qi Zhang, Y. Qian, G. Sheng, Xiuchen Jiang","doi":"10.1109/CMD.2018.8535943","DOIUrl":"https://doi.org/10.1109/CMD.2018.8535943","url":null,"abstract":"Due to the high transmission capacity and low loss, Gas-insulated metal-enclosed transmission line (GIL) is gradually replacing conventional overhead lines and highvoltage cables. As the basis of the research on the optical detection of partial discharge (PD), the propagation characteristics of the PD signal in GIL must be paid attention. In this paper, the single-core and three-cores GIL simulation models were established. And parameters of the optical signals generated by PD were observed and compared at the detection point and different detection surfaces. The results show that: In the cavity with different structures, there are different shades of faculae on detection surfaces, and the symmetry properties are also different. The horizontal location of the PD source affects the faculae and relative irradiance values. The optical signals on the detection surface of single-core and three-cores GIL have similar variations. The relative irradiance value obtained at the fixed detection point is related to the internal structure of the cavity, the position and surface of the PD source.","PeriodicalId":6529,"journal":{"name":"2018 Condition Monitoring and Diagnosis (CMD)","volume":"41 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81443498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation of Standard Gas Reference Materials of Trace Amount of Characteristic Decomposition Components of SF6 SF6痕量特征分解组分标准气体标准物质的制备

2018 Condition Monitoring and Diagnosis (CMD) Pub Date : 2018-09-01 DOI: 10.1109/CMD.2018.8535685

Miao Yulong, Yao Qiang, Zhang Mingxuan, Zeng Fuping, Tang Ju

{"title":"Preparation of Standard Gas Reference Materials of Trace Amount of Characteristic Decomposition Components of SF6","authors":"Miao Yulong, Yao Qiang, Zhang Mingxuan, Zeng Fuping, Tang Ju","doi":"10.1109/CMD.2018.8535685","DOIUrl":"https://doi.org/10.1109/CMD.2018.8535685","url":null,"abstract":"Preparing standard gas materials of trace amount of characteristic decomposition components of SF <inf>6</inf>is the top priority in monitoring the SF <inf>6</inf>insulated electrical equipment online. Making using of quantifying method, we prepared four kinds of standard gas reference material, which were named as CO<inf>2</inf>/SF<inf>6</inf>, CF<inf>4</inf>/SF<inf>6</inf>, SOF<inf>2</inf>/SF<inf>6</inf>, SO<inf>2</inf>F<inf>2</inf>/SF<inf>6</inf>, and they were applied for quantitative calibration in the four major kinds of decomposition components of SF6, that is CO<inf>2</inf>, CF<inf>4</inf>, SOF2 and SO<inf>2</inf>F<inf>2</inf>. The storage problems of the four trace amount of gas reference materials had been considered and solved while the short-term and long-term stability, pressure stability of the gas reference materials were taken into account as the test index. It had been showed that the standard uncertainties of the four kinds of gas reference material were all less than 0.2 %, and the consistency of material, long-term stability in 6 months and the uniformity of them all behaved well, which had met the state second-grade reference. As a consequence, the standard gas reference materials we made could be used in quantitative calibration of the characteristic decomposition components of SF6.","PeriodicalId":6529,"journal":{"name":"2018 Condition Monitoring and Diagnosis (CMD)","volume":"26 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81629584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation on the Design of DC Cable Insulation 直流电缆绝缘设计的探讨

2018 Condition Monitoring and Diagnosis (CMD) Pub Date : 2018-09-01 DOI: 10.1109/CMD.2018.8535902

Zhien Zhu, Liming Yang, Zhenxing Jiang, Dong Li, Longxiao Chen, Xike Wu, K. Gao, Hao Zeng, Yili Ma, Chuanbo Wang, Lixin Xu

引用次数: 0