2018 International Conference on Diagnostics in Electrical Engineering (Diagnostika)最新文献_第6页

Interaction of Three-Phase Insulating Composites with DC Field 三相绝缘复合材料与直流电场的相互作用

2018 International Conference on Diagnostics in Electrical Engineering (Diagnostika) Pub Date : 2018-09-01 DOI: 10.1109/DIAGNOSTIKA.2018.8526132

J. Hornak, P. Trnka, Emil Jahoda, J. Kúdelčík

引用次数: 0

Noise measurement diagnostics for large electric machines 大型电机噪声测量诊断

2018 International Conference on Diagnostics in Electrical Engineering (Diagnostika) Pub Date : 2018-09-01 DOI: 10.1109/DIAGNOSTIKA.2018.8526098

J. Karel, František Monhart

引用次数: 5

Changes of loss factor of polypropylene film capacitors during long time thermal ageing 长时间热老化过程中聚丙烯薄膜电容器损耗因子的变化

2018 International Conference on Diagnostics in Electrical Engineering (Diagnostika) Pub Date : 2018-09-01 DOI: 10.1109/DIAGNOSTIKA.2018.8526139

M. Horák, P. Mach

引用次数: 1

Review and Implementation of Transformer Health Index Methods in line with the Development of a Condition Assessment Tool 基于状态评估工具开发的变压器健康指数方法综述与实现

2018 International Conference on Diagnostics in Electrical Engineering (Diagnostika) Pub Date : 2018-09-01 DOI: 10.1109/DIAGNOSTIKA.2018.8526034

Stefan Kittan, S. Kornhuber, Peter Kästel, Gunnar Nitsche, G. Valtin, Michael Weise

{"title":"Review and Implementation of Transformer Health Index Methods in line with the Development of a Condition Assessment Tool","authors":"Stefan Kittan, S. Kornhuber, Peter Kästel, Gunnar Nitsche, G. Valtin, Michael Weise","doi":"10.1109/DIAGNOSTIKA.2018.8526034","DOIUrl":"https://doi.org/10.1109/DIAGNOSTIKA.2018.8526034","url":null,"abstract":"Transformers are important equipment of the electrical power supply system. A transformer defect can lead to heavy damage on the equipment itself as well as to its surroundings. Therefore, a defect is coherent with high costs. Numerous transformers are in operation since several decades. Furthermore, in Germany an additional stress for the equipment yields from a rising energy input of regenerative sources. The situation of the distribution grid is additionally intensified by a delayed system expansion. Hence, a transformer condition assessment tool is in development, which will support transformer expert at their daily work. This tool provides automated measurement evaluation, generation of diagnostic statements as well as the determination of a transformer overall condition. Health index (HI) methods are approved techniques for determining the general condition of a transformer. Thus, they are important for a condition assessment tool also. An overview about actual HI methods was generated by a literature study. Afterward the most promising methods where selected and implemented for the condition assessment tool. This paper recapitulates the literature study as well as the selection criteria and the implementation of the most interesting HI methods.","PeriodicalId":211666,"journal":{"name":"2018 International Conference on Diagnostics in Electrical Engineering (Diagnostika)","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114459328","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: 7

Analytical Study on Characteristics of Lithium-ion Battery after Applying High Voltage Impulse 高压冲击后锂离子电池特性分析研究

2018 International Conference on Diagnostics in Electrical Engineering (Diagnostika) Pub Date : 2018-09-01 DOI: 10.1109/DIAGNOSTIKA.2018.8526126

Takeshi Ishiguro, Yoji Fujita, H. Urushibata, A. Kono, M. Koyama, R. Hanaoka

{"title":"Analytical Study on Characteristics of Lithium-ion Battery after Applying High Voltage Impulse","authors":"Takeshi Ishiguro, Yoji Fujita, H. Urushibata, A. Kono, M. Koyama, R. Hanaoka","doi":"10.1109/DIAGNOSTIKA.2018.8526126","DOIUrl":"https://doi.org/10.1109/DIAGNOSTIKA.2018.8526126","url":null,"abstract":"Recently, Lithium-ion Batteries (LiB) have begun to be introduced for electric vehicles and power leveling. In power leveling, it is conceivable that LiB is connected to the grid. Therefore, the possibility that a high voltage pulse such as induced lightning will be applied to LiB must be considered, but it has hardly studied academically. Thus, in this study, high-frequency high-voltage pulse was applied to LiB and its effects were investigated. First, considering the inductance and ground capacitance of the transmission line, high impedance LiB was made by reducing the electrode area. Second, using an impulse noise simulator, voltage pulses with a pulse width of 0.4 [μs] and a voltage of 1 [kV] were applied ten times to the prepared high impedance LiB. It was expected that the capacity of LiB would decrease due to high voltage pulse, however it hardly changed. On the other hand, in the AC impedance analysis of the LiB after applying the high voltage pulse experiment, it was found that the arc of the high frequency side became smaller.","PeriodicalId":211666,"journal":{"name":"2018 International Conference on Diagnostics in Electrical Engineering (Diagnostika)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122205009","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

Laboratory Fixture for Measurement of Dielectric Absorption of Capacitors 测量电容器介电吸收的实验室夹具

2018 International Conference on Diagnostics in Electrical Engineering (Diagnostika) Pub Date : 2018-09-01 DOI: 10.1109/DIAGNOSTIKA.2018.8526035

J. Svarny

引用次数: 1

Benefits of Permanent Travel Measurement in High Voltage Circuit Breaker Online Monitoring 永久行程测量在高压断路器在线监测中的好处

2018 International Conference on Diagnostics in Electrical Engineering (Diagnostika) Pub Date : 2018-09-01 DOI: 10.1109/DIAGNOSTIKA.2018.8526036

N. Gariboldi, Phillip L. Corliss

{"title":"Benefits of Permanent Travel Measurement in High Voltage Circuit Breaker Online Monitoring","authors":"N. Gariboldi, Phillip L. Corliss","doi":"10.1109/DIAGNOSTIKA.2018.8526036","DOIUrl":"https://doi.org/10.1109/DIAGNOSTIKA.2018.8526036","url":null,"abstract":"The benefits of Condition Based Maintenance have been widely recognized for a long time. In recent years the focus shifted to its implementation. Since the resources for monitoring investments were not unlimited, the asset managers devoted their attention primarily on transformer monitoring at first, letting the condition monitoring of circuit breakers somehow fall behind (as evidenced in specific details from the CIGRE enquiry 2004-2007). Finally, circuit breakers are now getting more monitoring attention. In deciding which parameters should be kept under scrutiny to accurately assess the circuit breaker condition, travel measurement is one of the most discussed topics. Measuring the opening/closing coil current and the commutation of auxiliary contacts is essential, inexpensive and quite straightforward. Installing SF6 gas density monitoring, in addition to an already installed threshold gas relay, finds its motivation in environmental gas leakage regulations. The measurement of travel curves requires the permanent installation of a proper transducer and additional fitting work, which has an impact on the cost of the monitoring system. Supporting the best decision whether to go for it or not, the benefits in terms of monitoring assessment are analyzed in this paper. Starting from the influence of contact travel on circuit breaker performance, typical parameters that can be derived from this measurement are analyzed and compared in relation to possible circuit breaker problems. Considerations are provided as to where to take the movement from and how to rescale the input signal. Some indications are also given on how to select a proper travel transducer and DC/DC converter power supply, what to pay attention to from an electrical as well as from a mechanical point of view to enhance reliability and measurement accuracy.","PeriodicalId":211666,"journal":{"name":"2018 International Conference on Diagnostics in Electrical Engineering (Diagnostika)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127865078","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

Design of Experiments approach and its application in the evaluation of experiments 实验设计方法及其在实验评价中的应用

2018 International Conference on Diagnostics in Electrical Engineering (Diagnostika) Pub Date : 2018-09-01 DOI: 10.1109/DIAGNOSTIKA.2018.8526104

O. Tůmová, L. Kupka, P. Netolický

引用次数: 1

Market Mechanisms and a Regulatory Framework as an Incentive System to Increase the Flexibility of Power Consumption 以市场机制和监管框架作为激励机制，提高电力消费的灵活性

2018 International Conference on Diagnostics in Electrical Engineering (Diagnostika) Pub Date : 2018-09-01 DOI: 10.1109/DIAGNOSTIKA.2018.8526120

M. Zapf, C. Weindl, H. Pengg

引用次数: 0

Stator Winding Insulation Diagnosis by Very Low Frequency Techniques 用甚低频技术诊断定子绕组绝缘

2018 International Conference on Diagnostics in Electrical Engineering (Diagnostika) Pub Date : 2018-09-01 DOI: 10.1109/DIAGNOSTIKA.2018.8526083

B. N. Rao, Ramesh P. Nair

引用次数: 0