2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)最新文献_第6页

Estimation of Space Charge Accumulation in the bulk of Silicone Rubber Insulator Used in Outdoor Insulators under DC Field 直流磁场下室外绝缘子用硅橡胶绝缘子本体空间电荷积累的估算

2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2021-12-03 DOI: 10.1109/catcon52335.2021.9670472

S. Nandi, S. Reddy B.

引用次数: 0

Single-Sensor Based Acoustic Time Reversal Technique for Partial Discharge Localization in Power Transformer 基于单传感器的电力变压器局部放电定位声学逆时技术

2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2021-12-03 DOI: 10.1109/catcon52335.2021.9670519

Viral B. Rathod, G. Kumbhar, B. Bhalja

引用次数: 0

Failure Modes of Brushless Excitation System and Refurbishment Approach for Life Extension 无刷励磁系统的失效模式及延长寿命的翻新方法

2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2021-12-03 DOI: 10.1109/catcon52335.2021.9670491

P. S. Kumar, Reddy K Malla

{"title":"Failure Modes of Brushless Excitation System and Refurbishment Approach for Life Extension","authors":"P. S. Kumar, Reddy K Malla","doi":"10.1109/catcon52335.2021.9670491","DOIUrl":"https://doi.org/10.1109/catcon52335.2021.9670491","url":null,"abstract":"Brushless excitation system was introduced four decades ago to get rid of commutator problems of DC Exciter for turbine generator in power plants. But new problems appeared in rotating rectifier circuits and permanent magnets of this system. Failure of the exciters can have impact on the power production. Condition-based maintenance built on online condition monitor and off-line condition assessment has taken importance to safeguard the system.This paper presents different types of troubles experienced on brushless exciters and permanent magnet generators in various power plants. Condition monitor and condition assessment techniques adopted for these machines are dealt. Case studies on unexpected failure of BL Exciters of a 32 MW and 40 MW turbine generators in industry sector and refurbishment methods are narrated. Anatomy of the brushless exciter is given for the benefit of fresh service engineers which will help link the health checkup test results with the components. A brief on the efforts put in indigenous development of rotating electronic components and monitors of these machines to meet the customer’s necessity is given.","PeriodicalId":162130,"journal":{"name":"2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)","volume":"143 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":"123391144","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

Electroquasistatic Simulations of Wet-Dry Band Polymeric Insulator with Different Field Grading ZnO Microvaristor Designs 不同场级ZnO微压敏电阻设计的干湿带聚合物绝缘子的准静电模拟

2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2021-12-03 DOI: 10.1109/catcon52335.2021.9670476

H. Shrimathi, Mithun Mondal

引用次数: 2

Condition Monitoring of Power Electronic Converters: Present Status and Key Challenges 电力电子变流器状态监测:现状与关键挑战

2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2021-12-03 DOI: 10.1109/catcon52335.2021.9670494

Thakura Prasad Meher, S. Singh, A. Mohapatra

{"title":"Condition Monitoring of Power Electronic Converters: Present Status and Key Challenges","authors":"Thakura Prasad Meher, S. Singh, A. Mohapatra","doi":"10.1109/catcon52335.2021.9670494","DOIUrl":"https://doi.org/10.1109/catcon52335.2021.9670494","url":null,"abstract":"The reliability and life of a device can be improved by an effective condition monitoring technique. A Power Electronic Converter (PEC) consists of components, such as IGBTs, capacitors, and gate-drive circuits. These components are subject to failure due to their continuous operation in different operating conditions. The failure of any of these components can lead to the subsequent failure of other components and, eventually, the failure of the entire PEC. This paper reviews the present status in condition monitoring of the IGBT, solder, and capacitor in a PEC and also emphasizes on the key challenges of these techniques so as to develop an appropriate condition monitoring technique by proper academic research. The deviation in gate voltage-time characteristics, ON-state voltage, thermal resistance, and switching time of IGBT, are detected using various methods. Sensor and vibration-based methods are also discussed to monitor the condition of the bond wire. In addition, different methods are discussed to measure the capacitance value or Equivalent Series Resistance (ESR) value of a capacitor to judge its condition. Deviation of these values from a threshold helps in early detection and replacement before the occurrence of a fault. The benefits and limitations of these methods are also highlighted. Finally, the key issues and challenges in the condition monitoring of PECs are presented.","PeriodicalId":162130,"journal":{"name":"2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)","volume":"455 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":"115913001","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: 6

A Review on the Condition Monitoring of HVDC Polymeric housed Surge Arresters 高压直流聚体避雷器状态监测研究进展

2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2021-12-03 DOI: 10.1109/catcon52335.2021.9670497

G. N. Reddy, S. Reddy B.

{"title":"A Review on the Condition Monitoring of HVDC Polymeric housed Surge Arresters","authors":"G. N. Reddy, S. Reddy B.","doi":"10.1109/catcon52335.2021.9670497","DOIUrl":"https://doi.org/10.1109/catcon52335.2021.9670497","url":null,"abstract":"HVDC transmission has become increasingly necessary to connect renewable energy sources to the existing AC voltage grids. Recently several long distance HVDC transmissions are being executed and planned in the country, numerous converter stations have come up as a key link between the HVDC systems. Hence, there is a need for utmost protection for the converter stations. Composite or polymer housed ZnO surge arresters are being extensively used to protect the equipment to overcome various electrical stresses. There is no clear understanding of the aging of polymeric housed surge arrester used for the HVDC transmission system with scant information available. One important parameter proven to be highly challenging is the estimation/performance of the thermal behavior of polymeric arresters used in converter stations to withstand standard and non-standard surges encountered in the service. It is a known fact that voltage-current characteristics of zinc oxide varistors become degraded due to a series of stresses in service conditions. The present paper attempts a comprehensive review of degradation methods and the need for multi-stress aging studies on HVDC surge arresters. The paper highlights the current work initiated at our laboratory towards understanding more realistic and reliable assessment on aging/performance of surge arresters towards standard, nonstandard and complex waveshapes, along with the change in power flow and effect of voltage polarity reversal at the HVDC stations.","PeriodicalId":162130,"journal":{"name":"2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)","volume":"19 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":"126917160","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

Determining Sensor Accuracy for Condition Monitoring Applications based on End of Life Metrics: Capacitor Case Study 基于寿命终止度量确定状态监测应用的传感器精度:电容器案例研究

2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2021-12-03 DOI: 10.1109/catcon52335.2021.9670507

Sravanthi Srikantam, Ranjith Kumar Sreenilayam Raveendran

{"title":"Determining Sensor Accuracy for Condition Monitoring Applications based on End of Life Metrics: Capacitor Case Study","authors":"Sravanthi Srikantam, Ranjith Kumar Sreenilayam Raveendran","doi":"10.1109/catcon52335.2021.9670507","DOIUrl":"https://doi.org/10.1109/catcon52335.2021.9670507","url":null,"abstract":"Condition monitoring is playing a vital role in providing the information on health status of system. One of the approaches is to use sensors embedded in the system, and the measured data will be utilized for estimation of remaining life using end-of-life based diagnostic algorithms. Currently these sensors are selected based on the detectability of features for diagnostics algorithms, without attention to the diagnostic algorithms outcomes at the system level. Relating the diagnostic algorithm critical-to-quality (CTQ) metrics to system level outcomes for maintenance activities is addressed in this paper with a capacitor bank case study. Comparison of the diagnostic algorithm outcome with the actual scenario is carried out by using a confusion matrix and related with system measures such as no fault found and operational interruption rate. Normal probability density functions (pdf) are plotted for healthy capacitor bank and algorithm estimations for degraded capacitor bank at derived mean and standard deviation. Intersecting area of the actual capacitance pdf with the estimated pdf is calculated based on % degradation at various tolerance levels of capacitance estimation. Finding of this method is that the sensor must measure capacitance with 1 to 2% error tolerance for minimum impact on system level outcomes at all levels of capacitor degradation.","PeriodicalId":162130,"journal":{"name":"2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON)","volume":"1 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":"131181856","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

IoT Enabled Condition Monitoring of Low Voltage Motors using Fuzzy Inference System 使用模糊推理系统的低压电机物联网状态监测

2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2021-12-03 DOI: 10.1109/catcon52335.2021.9670486

O. Choudhary, Supriya Jaiswal, S. Das

引用次数: 0

Broadband Infrared Absorption Spectroscopy as a Tool for Dielectric Materials Research 宽带红外吸收光谱技术在介质材料研究中的应用

2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2021-12-03 DOI: 10.1109/catcon52335.2021.9670511

Y. Ohki, N. Hirai

引用次数: 0

Experimental studies to determine the net dielectric constant of stacked PPLP layers with liquid nitrogen 测定液氮堆积PPLP层净介电常数的实验研究

2021 IEEE 5th International Conference on Condition Assessment Techniques in Electrical Systems (CATCON) Pub Date : 2021-12-03 DOI: 10.1109/catcon52335.2021.9670539

I. De Souza, A. Sarkar, Maalika Sarkar, Kumar J. Senthil, Ankit Anand, A. S. Gour, Vutukuru Vasudeva Rao

引用次数: 0