2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)最新文献_第4页

Condition Assessment of Aged Transformer Oil Using Photoluminescence-Based Features 基于光致发光特征的老化变压器油状态评估

2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2021-12-03 DOI: 10.1109/catcon52335.2021.9670510

Abdelrahman M. Alshehawy, D. Mansour, M. Ghali

{"title":"Condition Assessment of Aged Transformer Oil Using Photoluminescence-Based Features","authors":"Abdelrahman M. Alshehawy, D. Mansour, M. Ghali","doi":"10.1109/catcon52335.2021.9670510","DOIUrl":"https://doi.org/10.1109/catcon52335.2021.9670510","url":null,"abstract":"Optical spectroscopy techniques were presented recently as a condition assessment tool for power transformer insulation. They are simple, non-destructive and inexpensive. Researchers applied different spectroscopy techniques for condition assessment of insulation paper, mineral and ester oils. Among these techniques, Ultraviolet-Visible (UV-Vis) technique showed promising results in correlation with some dielectric, physical, chemical properties and aging by-products. However, this technique is not very sensitive especially with complex mixtures as insulating oils. Thus, photoluminescence spectroscopy (PL) was introduced for condition assessment of the insulating oils. PL spectroscopy is more sensitive, simple and can be implemented online using compact and inexpensive sensors. In this paper, several insulating oil samples were aged with different durations and were tested using PL spectrometer to obtain their PL spectra. The impact of aging on the PL spectra is investigated. Moreover, parameters deduced from the PL spectra were correlated to the dielectric dissipation factor and aging by-products deduced from UV-Vis spectroscopy test. Finally, a new criterion based on PL spectroscopy is introduced for condition assessment of insulating oil. The new criterion specifies the acceptable limits for the parameters deduced from the PL spectra.","PeriodicalId":162130,"journal":{"name":"2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129056585","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: 4

Analysis of Frequency Response of Transformer with Inter-Turn Short Circuit Fault due to Transients 暂态变压器匝间短路故障的频率响应分析

2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2021-12-03 DOI: 10.1109/catcon52335.2021.9670474

Bibhav Das, Sathyamoorthy Dhayalan, Enukonda Venkateshwar Reddy, Birender Singh Thind, C. Reddy

{"title":"Analysis of Frequency Response of Transformer with Inter-Turn Short Circuit Fault due to Transients","authors":"Bibhav Das, Sathyamoorthy Dhayalan, Enukonda Venkateshwar Reddy, Birender Singh Thind, C. Reddy","doi":"10.1109/catcon52335.2021.9670474","DOIUrl":"https://doi.org/10.1109/catcon52335.2021.9670474","url":null,"abstract":"Transformer insulation is mainly designed based on lightning and switching impulse voltage. The standard lightning impulse waveform is 1.2/50 μsec. Very Fast Transient Overvoltage (VFTO) has a smaller rise time of about 4-100 nanoseconds, followed by some oscillations of about 1 to 50 MHz. The chopped impulse can be classified into two types, if chopping occurs before peak value is reached, the impulse is chopped on front, if it is chopped on the tail, called tail chopped. The chopped impulse and VFTO, if present in the power system network, causes severe degradation of transformer insulation, which may lead to failure or premature breakdown. In this paper, the VFTO and tail time chopped signals are examined on the transformer for inter-turn fault. These test signals are injected into a transformer winding under no-load condition. The frequency response is scrutinized for the healthy and faulty scenario of the transformer in terms of statistical parameters such as Absolute Average Difference (D.A.B.S.), Minimum Maximum Ratio (M.M. absolute), and Comparative Standard Deviation (C.S.D.).These statistical parameters are calculated for a different number of shorted turns on the LV winding of the transformer. Based on these statistical parameters, the variation in the frequency response plots is examined for the healthy and faulty conditions of the transformer","PeriodicalId":162130,"journal":{"name":"2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125371841","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: 1

Electrical Tree Growth Structural Analysis of XLPE Cable Insulation under Different AC Voltage 不同交流电压下交联聚乙烯电缆绝缘电气树生长结构分析

2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2021-12-03 DOI: 10.1109/catcon52335.2021.9670515

R. Sahoo, S. Karmakar

{"title":"Electrical Tree Growth Structural Analysis of XLPE Cable Insulation under Different AC Voltage","authors":"R. Sahoo, S. Karmakar","doi":"10.1109/catcon52335.2021.9670515","DOIUrl":"https://doi.org/10.1109/catcon52335.2021.9670515","url":null,"abstract":"The presence of partial discharge (PD) activities degrades the insulation strength and reduces the life span of in-service high voltage XLPE cable. The insulation properties are deteriorated by various factors, such as thermal-aging, electrical-aging, mechanical-aging, and environmental conditions. The main causes of the deterioration are the discharges, due to void, crack, contamination of impurities, etc. If these discharges continue for a certain period, it replicates several carbonyl channels which are known as an electrical tree. The growth rate of treeing phenomena implies a sudden and complete breakdown of in-service cable. This work primarily focuses on the PD measurement, fractal dimension analysis, and electrical tree growth characteristics analysis with respect to time in a 33 kV, 3 core XLPE cable insulation sample. Needle-to-needle electrode configuration is used to investigate the various type of tree structure formation with respect to their PD activities. The Box-counting method is implemented to analyze the fractal dimension which provided information on the volume of damage. The structural deformation of XLPE sample during the tree growth period is examined using ImageJ.net by surface plot analysis.","PeriodicalId":162130,"journal":{"name":"2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126524028","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

Study on the Effect of Acid Rain on Polymeric Insulator through Experimental and Computational Method 酸雨对聚合物绝缘子影响的实验与计算研究

2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2021-12-03 DOI: 10.1109/catcon52335.2021.9670493

A. R, S. T, U. S

引用次数: 0

Evaluating the Performance of Transformer Insulation Materials Using Finite Element Method 用有限元法评价变压器绝缘材料性能

2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2021-12-03 DOI: 10.1109/catcon52335.2021.9670479

Nisha Thanua, G. Kumbhar

引用次数: 0

Prediction of Suspension Insulator Condition Using Harmonics Ratio Based Method 基于谐波比的悬架绝缘子状态预测方法

2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2021-12-03 DOI: 10.1109/catcon52335.2021.9670505

M. Shahajahan, S. Dutta, A. Baral

引用次数: 1

Monitoring State of Health and State of Charge of Lithium-Ion Batteries Using Machine Learning Techniques 利用机器学习技术监测锂离子电池的健康状态和充电状态

2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2021-12-03 DOI: 10.1109/catcon52335.2021.9670522

Ayush K. Varshney, Aman Singh, Alka Ann Pradeep, A. Joseph, G. P

{"title":"Monitoring State of Health and State of Charge of Lithium-Ion Batteries Using Machine Learning Techniques","authors":"Ayush K. Varshney, Aman Singh, Alka Ann Pradeep, A. Joseph, G. P","doi":"10.1109/catcon52335.2021.9670522","DOIUrl":"https://doi.org/10.1109/catcon52335.2021.9670522","url":null,"abstract":"Lithium-ion batteries are used in a wide range of applications. However, monitoring these batteries effectively is a challenge. There have been several attempts to efficiently estimate the battery state by fitting semi-empirical models. However, these methods tend to be computationally costly. This paper aims to solve this problem using a battery monitoring prototype based on supervised machine learning by estimating the battery’s health and the charge contained by it It can be efficiently designed by making a few changes in the production cycle. The dataset obtained by the manufacturer can be used to train a machine learning model. These models then can be used to estimate the behavioral patterns of the battery in real-time which gives the user an idea about the performance of the battery at any instance. Further, this monitoring system can be extended on a large scale with the help of Internet of Things as thousands of batteries can be monitored using a single server running all the algorithms, thus reducing cost for large-scale applications.","PeriodicalId":162130,"journal":{"name":"2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132458831","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: 1

Electrical degradation characteristics of Low Voltage Zinc Oxide Varistor subjected to AC Switching Surges 交流开关浪涌作用下低压氧化锌压敏电阻的电退化特性

2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2021-12-03 DOI: 10.1109/catcon52335.2021.9670532

L. Muremi, P. Bokoro, W. Doorsamy

{"title":"Electrical degradation characteristics of Low Voltage Zinc Oxide Varistor subjected to AC Switching Surges","authors":"L. Muremi, P. Bokoro, W. Doorsamy","doi":"10.1109/catcon52335.2021.9670532","DOIUrl":"https://doi.org/10.1109/catcon52335.2021.9670532","url":null,"abstract":"this paper focuses on degradation analysis on electrical properties of low voltage zinc oxide varistors exposed to voltage switching surges. The operation and reliability performance of Zinc oxide (ZnO) varistors is dependent on its electrical, physical properties and the type of stress applied. Electrical power systems and electronic circuits experience various type of surge voltages resulting from lightning surges, switching surges and electrostatic discharges. Each electrical equipment has a dielectric strength which can be damaged if its level of strength is passed. In this work, the electrical properties of commercially low voltage varistors of same electrical properties and size from two different manufactures exposed to AC switching surges are analyzed. The reference voltages, Capacitances, and clamping voltages of samples are measured before and after application of switching surges to analyse degradation. The Pearson correlation is applied to identify the degree of relationship between reference voltage and clamping voltage of samples. The results obtained show that the mean percentage change of reference voltage of over 10-11 % and a 9.19-10.11 % at 17.28 million surges for manufacture A and B respectively. The calculated clamping voltage ratio increased and capacitance decreases after applied surges.","PeriodicalId":162130,"journal":{"name":"2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133892348","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: 1

Influence of Oil Quality on the Interpretation of Dissolved Gas Analysis Data 油质对溶解气分析资料解释的影响

2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2021-12-03 DOI: 10.1109/catcon52335.2021.9670513

Mohammed El Amine Senoussaoui, I. Fofana, M. Brahami

引用次数: 0

Enquiry into correlation of winding capacitance and SFRA measurements in power transformers 电力变压器绕组电容与SFRA测量的相关性探讨

2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2021-12-03 DOI: 10.1109/catcon52335.2021.9670504

Sreeram V, D. K. Puhan, Rajkumar M, S. Sudhakara Reddy, T. Gurudev

引用次数: 0