2020 IEEE Electrical Insulation Conference (EIC)最新文献_第6页

Comparison of Two Denoising Techniques to Improve UHF Partial Discharge Localization 改进超高频局部放电定位的两种降噪技术的比较

2020 IEEE Electrical Insulation Conference (EIC) Pub Date : 2020-06-01 DOI: 10.1109/eic47619.2020.9158689

T. Hejtmánek, P. Drexler, M. Judd, B. Stewart

引用次数: 1

Quantum Chemistry Computing to analyze the Gas Generation Mechanism in Ester Insulating Oils 用量子化学计算分析酯类绝缘油的生气机理

2020 IEEE Electrical Insulation Conference (EIC) Pub Date : 2020-06-01 DOI: 10.1109/eic47619.2020.9158757

Masamichi Kato, S. Matsumoto

引用次数: 0

Electrical aging of silicone oil 硅油的电老化

2020 IEEE Electrical Insulation Conference (EIC) Pub Date : 2020-06-01 DOI: 10.1109/eic47619.2020.9158574

I. Hosier, A. Vaughan, O. Cwikowski

引用次数: 2

Measuring partial discharges in MV cables under DC voltage: procedures and results in steady state conditions 测量直流电压下中压电缆的局部放电:在稳态条件下的程序和结果

2020 IEEE Electrical Insulation Conference (EIC) Pub Date : 2020-06-01 DOI: 10.1109/EIC47619.2020.9158726

H. Naderiallaf, A. Cavallini, Florian Esterl, R. Plath, P. Seri, G. Montanari

引用次数: 2

Incipient failures analysis of high voltage bushings 高压套管的早期失效分析

2020 IEEE Electrical Insulation Conference (EIC) Pub Date : 2020-06-01 DOI: 10.1109/eic47619.2020.9158713

Luciano Enciso, R. Álvarez, José L. Martínez, P. Arce, M. Galliani, Pablo Rodriguez, Emilo Calo

{"title":"Incipient failures analysis of high voltage bushings","authors":"Luciano Enciso, R. Álvarez, José L. Martínez, P. Arce, M. Galliani, Pablo Rodriguez, Emilo Calo","doi":"10.1109/eic47619.2020.9158713","DOIUrl":"https://doi.org/10.1109/eic47619.2020.9158713","url":null,"abstract":"High voltage bushing failures are one of the main causes that affect reliability and availability of high voltage transformers and reactors. Not only reliability and availability are affected, but also failures in these components could produce fires, damages in nearby equipment and injuries to people working in the proximity. It was shown that performing periodic diagnosis or implementing continuous monitoring help to avoid terminal failures. In order to expand knowledge regarding how high voltage bushings age and how the signs of ageing could be detected, the results of the analysis of six high voltage bushings removed preventively from service are presented in this work. These bushings had been operating for between twenty and thirty-three years before being removed. Three of them were pulled out preventively because diagnoses performed over them showed risk of failure. The analysis includes test of dissipation factor (tan δ) and capacitance, tip-up, frequency domain spectroscopy performed during their life in service and lab tests conducted when they were out of services: dissipation factor and capacitance, frequency domain spectroscopy, tip-up, dissipation factor at nominal voltage, partial discharges, DGA and oil analysis performed in laboratory. At the end of the lab test each bushing was disassembled, and a detailed visual inspection was carried out. Oil samples were taken to carry out physical and chemical analysis. Tests results, both field historical and in laboratory, life time in service, visual inspection and oil sample analysis results are presented correlated with the aim of evaluating failure mechanisms that were present, and analyzing which diagnosis tests have shown to be the most suitable to detect their condition.","PeriodicalId":286019,"journal":{"name":"2020 IEEE Electrical Insulation Conference (EIC)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121855820","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

State evaluation model of distribution transformer considering environmental factors and operation data 考虑环境因素和运行数据的配电变压器状态评价模型

2020 IEEE Electrical Insulation Conference (EIC) Pub Date : 2020-06-01 DOI: 10.1109/eic47619.2020.9158769

Chen Yingyu, Zhang Yubo, Wang Youyuan, Fang Jian

{"title":"State evaluation model of distribution transformer considering environmental factors and operation data","authors":"Chen Yingyu, Zhang Yubo, Wang Youyuan, Fang Jian","doi":"10.1109/eic47619.2020.9158769","DOIUrl":"https://doi.org/10.1109/eic47619.2020.9158769","url":null,"abstract":"In the fault diagnosis of distribution transformer, in order to fully consider the influence of environmental factors and operation data on distribution transformer, a method of fault diagnosis model of distribution transformer considering environmental factors and operation data is established. First of all, according to the fault data of distribution transformer provided by Guangzhou Power Supply Bureau in recent five years, the environmental factors causing the fault of distribution transformer are calculated. The association rule mining algorithm is used to mine the external environmental factors of distribution transformer fault, and find out the external environmental factors that have a high impact on distribution transformer; secondly, according to the operation data of distribution transformer fault, select the important operation data of distribution transformer fault, and calculate the deviation between the data and the standard value, and take the final result as one of the evaluation indicators; then, in the use of Based on the evaluation of internal test data, the external factors and operation data are fully integrated into the model to establish a complete evaluation model. Finally, the health level of a 10kV distribution transformer in Guangzhou is evaluated in real time in one day. The research of this paper can provide reference for the fault diagnosis and operation maintenance of 10kV distribution transformer","PeriodicalId":286019,"journal":{"name":"2020 IEEE Electrical Insulation Conference (EIC)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122013229","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

Partial discharge detection, Experimental-Simulation Comparison and actual limits 局部放电检测，实验模拟比较和实际限值

2020 IEEE Electrical Insulation Conference (EIC) Pub Date : 2020-06-01 DOI: 10.1109/eic47619.2020.9158654

C. Van de Steen, C. Abadie, G. Bélijar

{"title":"Partial discharge detection, Experimental-Simulation Comparison and actual limits","authors":"C. Van de Steen, C. Abadie, G. Bélijar","doi":"10.1109/eic47619.2020.9158654","DOIUrl":"https://doi.org/10.1109/eic47619.2020.9158654","url":null,"abstract":"The present paper reports a comparison between experimental and simulated partial discharge detection. The transition toward greener transportation solution, such as hybrid or all electric aircraft, imply the use of higher voltage to mitigate the mass. Experimental measurement of partial discharge is possible but does not always provide results on the location of the discharge or on the different possibilities to avoid them. The aim of this paper is to examine results provided by a software (AIRLIFT), using as input electrostatic simulation, to a) predict the Partial Discharge Ignition Voltage (PDIV), b) localize the Partial Discharge (PD), c) be able to directly modify the design in order to increase the PDIV and d) compare the simulated results to experimental ones. To do so, twisted pairs samples were studied experimentally and numerically, under different environmental constraints to simulate aeronautical environment, in order to obtain and compare the PDIV. This paper will briefly present the theory and the equipment used, the different results obtained and a comparison between them. Current limitations of the simulations will also be discussed.","PeriodicalId":286019,"journal":{"name":"2020 IEEE Electrical Insulation Conference (EIC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129132599","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

Calculation method of hot spot temperature of isolation switch based on improved heat path model 基于改进热路模型的隔离开关热点温度计算方法

2020 IEEE Electrical Insulation Conference (EIC) Pub Date : 2020-06-01 DOI: 10.1109/EIC47619.2020.9158765

Xing Fan, Qiaogen Zhang, Yi Zhao, Zhehao Pei, Weijiang Chen, Tao Wen, Yu Zhang, Jiahui Yang

{"title":"Calculation method of hot spot temperature of isolation switch based on improved heat path model","authors":"Xing Fan, Qiaogen Zhang, Yi Zhao, Zhehao Pei, Weijiang Chen, Tao Wen, Yu Zhang, Jiahui Yang","doi":"10.1109/EIC47619.2020.9158765","DOIUrl":"https://doi.org/10.1109/EIC47619.2020.9158765","url":null,"abstract":"The isolation switch is one of the most commonly used high-voltage electrical equipment in the power grid, and its stability and service life directly affect the operation of the power grid. The fast calculation method of the hot spot temperature for isolation switch is an important contents of online monitoring. However, the numerical calculation method of the thermal field distribution commonly used currently has a slow calculation speed, complicated modeling and change calculation conditions, and is difficult to apply. Therefore, this paper proposes an improved method for calculating the hot spot temperature of an isolating switch based on a thermal circuit model, which can better balance the accuracy and calculation speed. This article analyzes the GW16-550 outdoor high-voltage AC isolating switch. The calculation results show that the hot spot is located at the contact point of the contact. Under the rated conditions, the hot spot temperature is about 20 K higher than the ambient temperature. The hot spot temperature decreases with the increase of wind speed, and changes significantly at low wind speeds. Hot spot temperature is directly proportional to ambient temperature and service life. This research provides support for the research of hotspot temperature for isolation switch, and has certain practical value.","PeriodicalId":286019,"journal":{"name":"2020 IEEE Electrical Insulation Conference (EIC)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127803194","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

The Application of Dielectric Modulus in the Oil-impregnated Paper Insulation 介电模量在油浸纸绝缘中的应用

2020 IEEE Electrical Insulation Conference (EIC) Pub Date : 2020-06-01 DOI: 10.1109/eic47619.2020.9158766

Kaige Yang, M. Dong, Yizhuo Hu, Jiacheng Xie, M. Ren

引用次数: 0

Distinct Representations of Hot Gas Dielectric Strength and Their Impact 热气体介电强度的不同表征及其影响

2020 IEEE Electrical Insulation Conference (EIC) Pub Date : 2020-06-01 DOI: 10.1109/eic47619.2020.9158741

F. Haque, Mojtaba Rostaghi-Chalaki, K. Yousefpour, Charlotte Park

引用次数: 0