2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)最新文献_第2页

Study of Thermal and Electrical Aging in Epoxy Resin through Electroluminescence Measurement 电致发光法研究环氧树脂的热老化和电老化

2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2021-12-03 DOI: 10.1109/catcon52335.2021.9670533

Amrendra Kumar, N. Gupta

{"title":"Study of Thermal and Electrical Aging in Epoxy Resin through Electroluminescence Measurement","authors":"Amrendra Kumar, N. Gupta","doi":"10.1109/catcon52335.2021.9670533","DOIUrl":"https://doi.org/10.1109/catcon52335.2021.9670533","url":null,"abstract":"The reliability of HVDC systems is largely dependent on the performance of the insulation under high electric fields. Solid polymers or their composites, often used in insulation, are subject to multiple stresses throughout their lifetime. Prolonged exposure to thermal, electrical and environmental factors results in aging; resultant modifications to material microstructure causes progressive insulation degradation. In this work, Electroluminescence (EL) measurements using a photomultiplier tube (PMT), working in photon counting mode, is used as a diagnostic tool to study space charge dynamics with aging of material. The material considered is epoxy resin due to its prevalence in high voltage insulation. The specimen is subjected successively to thermal and electrical aging. Electroluminescence (EL) measurements are performed before and after aging. The variation of EL with field and temperature of aging is studied. Electroluminescence increases with field in both unaged and aged samples. Electroluminescence intensity decreases with aging, both electrical as well as thermal.","PeriodicalId":162130,"journal":{"name":"2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)","volume":"130 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":"134073399","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

Detection and Analysis of Partial Discharges under PWM Voltage Excitation PWM电压激励下局部放电的检测与分析

2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2021-12-03 DOI: 10.1109/catcon52335.2021.9670492

Mengchen Yang, B. Phung

引用次数: 0

Variable Reluctance type Speed Sensor for Acidic and Radiation Environment 酸性和辐射环境用变磁阻式速度传感器

2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2021-12-03 DOI: 10.1109/catcon52335.2021.9670477

Sthitapragyan Pattanayak, S. K. Dash, S. Sivakumar, G. Shanmugam

{"title":"Variable Reluctance type Speed Sensor for Acidic and Radiation Environment","authors":"Sthitapragyan Pattanayak, S. K. Dash, S. Sivakumar, G. Shanmugam","doi":"10.1109/catcon52335.2021.9670477","DOIUrl":"https://doi.org/10.1109/catcon52335.2021.9670477","url":null,"abstract":"The sole objective of this work is to develop a speed sensor for acidic and radiation environment. The existing speed sensors available in market like Tacho-generator, Hall Effect type speed sensor and optical encoder type speed sensor has low life expectancies in acidic and radiation environment. The variable reluctance sensor available in the market uses a normal pickup coil around a permanent magnet. But the magnetic field of permanent magnet diminishes with time, ambient temperature and vibration. Insulation of the coil also gets damaged in acidic environment. The proposed variable reluctance sensor is more rugged and can be used in harsh environment with suitable design adaptations. As the behaviour of permanent magnet in acidic environment is not well studied, it is decided to use an electromagnet in place of permanent magnet and stainless steel sheathed Mineral Insulated copper core (MI Cable) for winding the coils so that it can withstand acidic and radiation environment. The Speed Sensor based on Variable Reluctance principle has been designed, analysed and fabricated. The effect of air-gap, exciting current, and speed of the motor on the output of the sensor was obtained in actual field condition. A signal conditioning circuit is developed and its response is also studied for conditioning the noisy output of the variable reluctance sensor.","PeriodicalId":162130,"journal":{"name":"2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)","volume":"13 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":"132864127","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

Insulation Assessment Based on Dielectric Dissipation Factor Measurement under Non-sinusoidal Excitation 非正弦激励下基于介电损耗系数测量的绝缘评定

2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2021-12-03 DOI: 10.1109/catcon52335.2021.9670506

Pratic A Muntakim, Shubin Zhang, Jun-yan Zhang, B. Phung

引用次数: 1

Performance Studies on Mineral Oil and Natural Ester Oil Based High Dielectric CCTO Nanofluids for High Voltage Application 矿物油和天然酯油基高压高介电CCTO纳米流体的性能研究

2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2021-12-03 DOI: 10.1109/catcon52335.2021.9670526

Arun Ram Prasath R T, Mubeen Akhtar Ansari, Thomas Paramanandam, S. N. Mahato, N. K. Roy

引用次数: 1

[CATCON 2021 Front cover] 【CATCON 2021封面】

2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2021-12-03 DOI: 10.1109/catcon52335.2021.9670534

引用次数: 0

Dielectric Strength Compatibility for Coconut Oil as a Transformer Insulating Oil 椰子油作为变压器绝缘油的介电强度相容性

2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2021-12-03 DOI: 10.1109/catcon52335.2021.9670499

Dayal Ch. Shill, Anu Kumar Das, S. Chatterjee

{"title":"Dielectric Strength Compatibility for Coconut Oil as a Transformer Insulating Oil","authors":"Dayal Ch. Shill, Anu Kumar Das, S. Chatterjee","doi":"10.1109/catcon52335.2021.9670499","DOIUrl":"https://doi.org/10.1109/catcon52335.2021.9670499","url":null,"abstract":"Petroleum-based mineral oil is being used dominantly as transformer oil for more than a century for its excellent dielectric properties. Taking into account the source is derived from nonrenewable energy, efforts have been made to find a comparable substitution of conventional mineral oil. In this paper, a comparison is being made for the dielectric strength of two different types of coconut oil i.e. Virgin and RBD grade with that of conventional mineral insulating oil based on the experimental results. In dielectric strength, AC and Impulse breakdown voltage tests were carried out along with moisture contrent and dielectric dissipation factor of the samples. From the results, it was seen that Virgin and RBD grade coconut oil is having an AC breakdown voltage of 48.7 kV and 51.5 kV, which is 25% and 32% higher than that of mineral oil 38.9 kV. Further the results of 50% impulse breakdown voltage show that Virgin and RBD grade coconut oils are having a slightly higher breakdown value of 148.6 kV and 147.7 kV respectively, than mineral oil which is 140.8 kV. For tan delta tests, RBD grade coconut oil is having the lowest value of dissipation factor 0.011718, which is 77% lower than mineral oil 0.050459 and that of virgin coconut oil is 0.044075, which is 13% lower than mineral oil. Overall, it was found that the dielectric strength of coconut oils is better than mineral oil and has positive potential for replacing it.","PeriodicalId":162130,"journal":{"name":"2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)","volume":"36 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":"125020837","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

Experimental studies on determination of V-I characteristics and insulation resistance of stacked PPLP layers with liquid nitrogen under AC and DC excitations 交直流激励下液氮堆叠PPLP层V-I特性及绝缘电阻测定的实验研究

2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2021-12-03 DOI: 10.1109/catcon52335.2021.9670501

I. De Souza, A. Sarkar, Maalika Sarkar, S. J, Ankit Anand, Abhay Singh Gour, V. Rao

{"title":"Experimental studies on determination of V-I characteristics and insulation resistance of stacked PPLP layers with liquid nitrogen under AC and DC excitations","authors":"I. De Souza, A. Sarkar, Maalika Sarkar, S. J, Ankit Anand, Abhay Singh Gour, V. Rao","doi":"10.1109/catcon52335.2021.9670501","DOIUrl":"https://doi.org/10.1109/catcon52335.2021.9670501","url":null,"abstract":"Cold dielectric based High Temperature Superconducting (HTS) power cables often use PolyPropylene Laminated Paper (PPLP) as the dielectric material for electrical insulation. PPLP helps withstand the rated voltage at cryogenic temperatures and is thus wrapped around the current carrying conductor. It coniines the electric field within itself resulting in electrical insulation of the cable from the cryostat which is at ground potential. The V-I charachteristics and the insulation resistance of PPLP immersed in Liquid Nitrogen (LN2) are of paramount importance and its study becomes crucial for superconducting devices as they operate at extreme conditions. This paper deals with the development of an experimental facility for investigating dielectric and insulation characteristics of PPLP for different temperatures, when subjected to various voltage levels. The V-I characteristics of PPLP at cryogenic temperatures (77 K when immersed in LN2) and room temperature have been determined. Additionally, the insulation resistance of PPLP at ambient temperature was determined and compared against its value when immersed in LN2 (at 77 K).","PeriodicalId":162130,"journal":{"name":"2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)","volume":"40 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":"128453823","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

Understanding the Liquid Permeation Properties ot RTV Silicone Rubber Nanocomposites Subjected to Strong Electrolytic Solutions 强电解溶液作用下RTV硅橡胶纳米复合材料的渗透性能研究

2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2021-12-03 DOI: 10.1109/catcon52335.2021.9670502

Palash Mishra, M. Paul, Shubham Mishra

{"title":"Understanding the Liquid Permeation Properties ot RTV Silicone Rubber Nanocomposites Subjected to Strong Electrolytic Solutions","authors":"Palash Mishra, M. Paul, Shubham Mishra","doi":"10.1109/catcon52335.2021.9670502","DOIUrl":"https://doi.org/10.1109/catcon52335.2021.9670502","url":null,"abstract":"Room temperature vulcanized (RTV) silicone rubber (SiR) has been demonstrated to be the most effective hydrophobic coating material for augmenting the pollution performance of outdoor high voltage (HV) ceramic insulators. However, water/liquid ingress severely degrades the material properties of SiR. Therefore, the proposed work investigates the liquid immersion/permeation resistance of Silica (SiO2) and Titania (TiO2) doped RTV SiR nanocomposites through weight-gain experiments performed at room temperature of 27°C. The test was performed with the SiR nanocomposites exposed to deionized water (DI) and strong electrolytic sodium chloride (NaCl) and nitric acid (HNO3) solution. The diffusion rate for each test configuration was numerically investigated using the Fickian diffusion model. Investigation results propose that the permeation resistance of SiR amalgamates depend upon the solution and the nanofiller type. Further, depending upon the test observations, RTV SiR nanocomposite with higher degradation resistance against strong electrolytic solutions is identified and reported.","PeriodicalId":162130,"journal":{"name":"2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)","volume":"45 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":"126942117","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

Experimental validation of a fault diagnostic method in SPWM and SVPWM CHB-MLIs SPWM和SVPWM CHB-MLIs故障诊断方法的实验验证

2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2021-12-03 DOI: 10.1109/catcon52335.2021.9670525

N. Raj, Anjali Anand, J. G., S. George

引用次数: 0