2019 IEEE 4th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)最新文献_第7页

Design of a modified radar sensor for liquid level measurement and monitoring 一种用于液位测量和监测的改进型雷达传感器设计

2019 IEEE 4th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2019-11-01 DOI: 10.1109/CATCON47128.2019.CN0017

Shyamsundar Jena, S. Shrotriya, M. Pande, G. Joshi

引用次数: 1

Design and Simulation of Mems based Piezoelectric Acoustic sensor 基于Mems的压电声传感器的设计与仿真

2019 IEEE 4th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2019-11-01 DOI: 10.1109/CATCON47128.2019.CN0061

V. S, Deepika, Vasudha Hegde, Veda Sandeep Nagaraj, H. Suresh, G. A

引用次数: 1

Application of Optoelectronic Technique for Detection of Air Corona, Surface Discharges at Cable Termination and End winding of Stator Coil 光电技术在空气电晕、电缆端面放电和定子线圈端面绕组检测中的应用

2019 IEEE 4th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2019-11-01 DOI: 10.1109/CATCON47128.2019.CN0090

D. K. Puhan, Rajat Sharma, K. R, B. N. Rao

{"title":"Application of Optoelectronic Technique for Detection of Air Corona, Surface Discharges at Cable Termination and End winding of Stator Coil","authors":"D. K. Puhan, Rajat Sharma, K. R, B. N. Rao","doi":"10.1109/CATCON47128.2019.CN0090","DOIUrl":"https://doi.org/10.1109/CATCON47128.2019.CN0090","url":null,"abstract":"Partial discharge in high voltage equipment like generators, motors, transformers, power cables etc. occur due to various manufacturing defect sites or due to aging of the insulation under various stresses. Occurrence of surface discharges at the termination of cables, end winding of stator bars, surface discharges along the supporting insulators in case of gas insulated systems are common. Prolonged partial discharge activity may lead to breakdown of the insulation resulting in forced outages and financial implications. Partial discharge measurement is a promising tool for detection of incipient faults in power equipment. This paper presents a novel optoelectronic technique for detecting air corona, surface discharges at cable termination and end windings of stator coil. A laboratory investigation was carried out in controlled conditions to understand the detection capability of optoelectronic technique for these types of discharges. An experimental setup consisting of collimating lens, fluorescent optical fiber, common optical fiber cable, fiber optic coupler, photomultiplier tube modules and pc-based oscilloscope for data acquisition was designed and used for measurements. The results are presented and discussed.","PeriodicalId":183797,"journal":{"name":"2019 IEEE 4th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)","volume":"59 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127380171","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 dielectric strength of mineral oil on mixing with a natural ester oil as a polar contaminant under AC stress 矿物油介电强度对作为极性污染物与天然酯油混合的影响

2019 IEEE 4th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2019-11-01 DOI: 10.1109/CATCON47128.2019.CN0038

Anjali Uppal, Ritika Agarwal, Pavitra Sharma, Jeyabalan Velandy, C. Narasimhan, Girish A Morde

{"title":"Effect of dielectric strength of mineral oil on mixing with a natural ester oil as a polar contaminant under AC stress","authors":"Anjali Uppal, Ritika Agarwal, Pavitra Sharma, Jeyabalan Velandy, C. Narasimhan, Girish A Morde","doi":"10.1109/CATCON47128.2019.CN0038","DOIUrl":"https://doi.org/10.1109/CATCON47128.2019.CN0038","url":null,"abstract":"Ester oils are considered as suitable substitutes for conventional mineral oil for transformer applications due to good environmental performance and higher fire point compared to mineral oils. The electronegative property of the oxygen atom in the ester oil group makes ester oil more polar than mineral oil. Ester oils also have higher permittivity and lower resistivity with respect to mineral oil. Hence, it would be of interest to predict the influence of polar contamination in a non-polar nature of mineral oil. In this paper, 10% of natural ester oil is mixed as a polar contaminant in mineral oil to evaluate its effect on AC dielectric strength. Initially, AC dielectric strength of mineral oils and natural ester oil are predicted as a reference for various oil gaps under power frequency voltage conditions. Both naphthenic and paraffinic based mineral oil grade (uninhibited and inhibited oils) are utilized to consider the effect of inhibitors and aromatic contents of mineral oil in natural ester oil on AC dielectric strength. The breakdown voltages are determined by rising voltage method for nonuniform field (Sphere-needle) configurations. Weibull distribution functions are used to analyze the experimental data and to estimate the breakdown voltage with risk of 1% failure probability. Finally, finite element method (FEM) is used to predict the maximum stress in mineral oil, natural ester oil and mixture oil.","PeriodicalId":183797,"journal":{"name":"2019 IEEE 4th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126363170","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: 2