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2010 9th International Conference on Environment and Electrical Engineering最新文献

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Delayed current zeros close to generator terminals 靠近发电机端子的延迟电流零点
2010 9th International Conference on Environment and Electrical Engineering Pub Date : 2010-05-16 DOI: 10.1109/EEEIC.2010.5489961
S. Fenske
{"title":"Delayed current zeros close to generator terminals","authors":"S. Fenske","doi":"10.1109/EEEIC.2010.5489961","DOIUrl":"https://doi.org/10.1109/EEEIC.2010.5489961","url":null,"abstract":"The paper shows the switching behaviour of a grid circuit breaker in case of short circuits close to generator terminals. For the simulation a new three-phase circuit breaker model has been developed in the network calculation program Power-Factory. PowerFactory is an appropriate software to simulate the switching behaviour of a circuit breaker.","PeriodicalId":197298,"journal":{"name":"2010 9th International Conference on Environment and Electrical Engineering","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125696246","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: 3
Time-frequency analysis of step response in medium voltage networks 中压网络阶跃响应的时频分析
2010 9th International Conference on Environment and Electrical Engineering Pub Date : 2010-05-16 DOI: 10.1109/EEEIC.2010.5489957
Veleslav Mach, R. Goňo, Zbigniew Leonowicz, T. Sikorski
{"title":"Time-frequency analysis of step response in medium voltage networks","authors":"Veleslav Mach, R. Goňo, Zbigniew Leonowicz, T. Sikorski","doi":"10.1109/EEEIC.2010.5489957","DOIUrl":"https://doi.org/10.1109/EEEIC.2010.5489957","url":null,"abstract":"Measurements of free-burning arc in the power network were recorded at 22 kV busbar voltage transformer. As the measuring transformer distort the record, it was not possible to determine the response by measurements. The experiment was therefore modeled using EMTP -ATP. In addition to the described model of measuring voltage transformer, it has been modeled the network in which the measurement takes place. In order to analyze time-varying oscillatory character of voltage response two kind of time-frequency signal processing method were proposed: those which characterize time behavior of the waveform, and those which give information about frequency components. Obtained representations are based on classical Fourier spectrum and time-frequency representations: Smoothed Pseudo-Wigner-Ville Distribution and the S-transform.","PeriodicalId":197298,"journal":{"name":"2010 9th International Conference on Environment and Electrical Engineering","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121884135","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
Economical benefits of supporting voltage control with large solar parks 大型太阳能园区配套电压控制的经济效益
2010 9th International Conference on Environment and Electrical Engineering Pub Date : 2010-05-16 DOI: 10.1109/EEEIC.2010.5489941
Ahmad-Rami Al-Awaad, M. Arwani
{"title":"Economical benefits of supporting voltage control with large solar parks","authors":"Ahmad-Rami Al-Awaad, M. Arwani","doi":"10.1109/EEEIC.2010.5489941","DOIUrl":"https://doi.org/10.1109/EEEIC.2010.5489941","url":null,"abstract":"This study shows the extent to which large solar parks can support voltage control in very high voltage grids. The technical and economical benefits of dividing a large solar park into smaller solar parks were also investigated. In this study, the Syrian 380- and 220-kV-grids have been reviewed as an example.","PeriodicalId":197298,"journal":{"name":"2010 9th International Conference on Environment and Electrical Engineering","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134052295","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
A new method for uninterrupted operation of wind turbines equipped with DFIGs during grid faults using FCL 电网故障时，采用FCL实现带dfig的风力发电机组不间断运行
2010 9th International Conference on Environment and Electrical Engineering Pub Date : 2010-05-16 DOI: 10.1109/EEEIC.2010.5490024
M. Fazli, N. Talebi
{"title":"A new method for uninterrupted operation of wind turbines equipped with DFIGs during grid faults using FCL","authors":"M. Fazli, N. Talebi","doi":"10.1109/EEEIC.2010.5490024","DOIUrl":"https://doi.org/10.1109/EEEIC.2010.5490024","url":null,"abstract":"The main issue of wind turbines that equipped with doubly fed induction generators (DFIGs) is the grid faults or low voltage ride through capability. In this paper, a new solution for uninterrupted operation of wind turbine driving a DFIG has been proposed during fault condition in the grid. A fault current limiter (FCL) is placed in series with the rotor circuit. During fault condition FCL enters a huge solenoid in the rotor circuit to inhabit increasing of current in the rotor circuit. When the fault is cleared the FCL bypasses the solenoid. A static synchronous compensator (STATCOM) has been applied for supplying required reactive power in faults and steady states. Capability and modeling accuracy of the proposed method confirmed with simulating a sample power system in PSCAD/EMTDC software.","PeriodicalId":197298,"journal":{"name":"2010 9th International Conference on Environment and Electrical Engineering","volume":"196 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123225731","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: 18
Subharmonics determination method based on binary successive approximation feed forward artificial neural network: a preliminary study 基于二元逐次逼近前馈人工神经网络的次谐波确定方法的初步研究
2010 9th International Conference on Environment and Electrical Engineering Pub Date : 2010-05-16 DOI: 10.1109/EEEIC.2010.5489913
F. Leccese
{"title":"Subharmonics determination method based on binary successive approximation feed forward artificial neural network: a preliminary study","authors":"F. Leccese","doi":"10.1109/EEEIC.2010.5489913","DOIUrl":"https://doi.org/10.1109/EEEIC.2010.5489913","url":null,"abstract":"A feedforward artificial neural network has been realized and trained to individualize subharmonics frequencies in an electric network. The adopted sampling window is fixed in 20 ms correspondent to a period of the fundamental frequency of 50 Hz, nevertheless the net is able to identify the subharmonics frequencies even if their period is not completed. The particular binary successive approximation structure realized for the ANN forecasts the scalability of the same net so allowing to recognize the subharmonics with a prefixed resolution. The net has been widely tested on synthesized signals.","PeriodicalId":197298,"journal":{"name":"2010 9th International Conference on Environment and Electrical Engineering","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125725986","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
MTBF analysis in OEM Company: Applications to ZCZVT PWM soft-transition inverters OEM公司MTBF分析:在ZCZVT PWM软过渡逆变器上的应用
2010 9th International Conference on Environment and Electrical Engineering Pub Date : 2010-05-16 DOI: 10.1109/EEEIC.2010.5489940
Mustafa Nil, Metin Nil, B. Çakır
{"title":"MTBF analysis in OEM Company: Applications to ZCZVT PWM soft-transition inverters","authors":"Mustafa Nil, Metin Nil, B. Çakır","doi":"10.1109/EEEIC.2010.5489940","DOIUrl":"https://doi.org/10.1109/EEEIC.2010.5489940","url":null,"abstract":"MTBF Mean Time Between Failure is a life unit as a million hours or years of the electronic product or systems. Reliability engineering as a scientific discipline is introduced in this paper, with an emphasis on the specific nature of reliability analysis. Applications of reliability analysis in the form of reliability tests are discussed for the ZCZVT (Zero Current Zero Voltage Transition) PWM (Pulse Width Modulation) soft-transition inverter in the OEM (Original Equipment Manufacturing) Company. A reliability test plan for the ZCZVT PWM soft-transition inverter is proposed, after a brief introduction to the subject, consisting of several board level environmental tests and component level lifespan tests. The results for the reliability tests are analyzed using Relex Reliability software adhering to the MIL-STD-217F using the Parts Count method.","PeriodicalId":197298,"journal":{"name":"2010 9th International Conference on Environment and Electrical Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129736936","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
Artificial neural network for detection of asynchronous state 异步状态的人工神经网络检测
2010 9th International Conference on Environment and Electrical Engineering Pub Date : 2010-05-16 DOI: 10.1109/EEEIC.2010.5489953
P. Kostyła
{"title":"Artificial neural network for detection of asynchronous state","authors":"P. Kostyła","doi":"10.1109/EEEIC.2010.5489953","DOIUrl":"https://doi.org/10.1109/EEEIC.2010.5489953","url":null,"abstract":"An asynchronous state of a synchronic machine may be identified through determining the amplitudes of particular components of stator's current provided that a constant slip value is assumed. Following a synchronism loss, this adopted value is assumed to be achieved and, for sure, exceeded. New parallel algorithms for detection of asynchronous state of synchronic machines, are proposed. The algorithms can be implemented by analogue adaptive circuits employing some neural networks principles. This chapter provides a description of artificial neural networks realising this task, whose operation algorithm is based on minimum square error criteria and maximum loss method.","PeriodicalId":197298,"journal":{"name":"2010 9th International Conference on Environment and Electrical Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124622854","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
Maturity scoring method for consumer electronics products 消费类电子产品的成熟度评分方法
2010 9th International Conference on Environment and Electrical Engineering Pub Date : 2010-05-16 DOI: 10.1109/EEEIC.2010.5489925
T. Tekcan, Barbaros Kirisken
{"title":"Maturity scoring method for consumer electronics products","authors":"T. Tekcan, Barbaros Kirisken","doi":"10.1109/EEEIC.2010.5489925","DOIUrl":"https://doi.org/10.1109/EEEIC.2010.5489925","url":null,"abstract":"In highly competitive markets, management of the reliability tests is highly critical under time to market pressure. The best example for such competitive markets is consumer electronics. The consumer electronics products are rapidly evolving and there are a lot of competitive companies in the market. And also consumer expectations on products are very high. An alive and metric scoring must be defined to manage and judge the reliability level of each new project in a very large scale company, Vestel, which produces 10 million TV sets per year. Complete reliability test procedures and new scoring approach is introduced. The test procedures are organized as product level or board level which includes power boards and main boards of products. The scoring approach and method, is called maturity level, is an indicator of the overall reliability of a product.","PeriodicalId":197298,"journal":{"name":"2010 9th International Conference on Environment and Electrical Engineering","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130643263","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
Received signal strength uncertainty in energy-aware localization in wireless sensor networks 无线传感器网络能量感知定位中接收信号强度的不确定性
2010 9th International Conference on Environment and Electrical Engineering Pub Date : 2010-05-16 DOI: 10.1109/EEEIC.2010.5490008
Patrik Moravek, D. Komosny, David Girbau Sala, Antoni Lazaro Guillén
{"title":"Received signal strength uncertainty in energy-aware localization in wireless sensor networks","authors":"Patrik Moravek, D. Komosny, David Girbau Sala, Antoni Lazaro Guillén","doi":"10.1109/EEEIC.2010.5490008","DOIUrl":"https://doi.org/10.1109/EEEIC.2010.5490008","url":null,"abstract":"In wireless sensor networks where the nodes are equipped with limited energy sources, energy consumption is a crucial parameter of each part of a node activity. This paper deals with node localization based on received signal strength (RSS). The signal power at receiving node is influenced by several stochastic factors. To eliminate so called RSS uncertainty, several measurements of signal strength must be performed to get the value to be used in distance calculation. Multiple packet transmission means bigger energy consumption during distance estimation. This paper presents the analysis of energy consumption during the signal strength measurement with respect to the accuracy of RSS estimation.","PeriodicalId":197298,"journal":{"name":"2010 9th International Conference on Environment and Electrical Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126797566","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: 18
Detection, classification and localization of power system impulsive transients using S-transform 基于s变换的电力系统脉冲暂态检测、分类与定位
2010 9th International Conference on Environment and Electrical Engineering Pub Date : 2010-05-16 DOI: 10.1109/EEEIC.2010.5489944
M. Jaya Bharata Reddy, D. Mohanta
{"title":"Detection, classification and localization of power system impulsive transients using S-transform","authors":"M. Jaya Bharata Reddy, D. Mohanta","doi":"10.1109/EEEIC.2010.5489944","DOIUrl":"https://doi.org/10.1109/EEEIC.2010.5489944","url":null,"abstract":"Power quality issues have been of a great concern in recent years due to extensive use of power electronic devices and non-linear loads in electrical power system. In order to monitor electrical power quality disturbance, short time discrete Fourier transform (STFT) is most often used. But in case of non-stationary signals, STFT does not track the signal dynamics properly due to limitations of a fixed window width chosen a priori. By using wavelet transform, disturbances in electrical power system can only be detected and localized, but for sake of classification, standard multi-resolution analysis or other classification techniques must be used. This paper presents a new approach for power quality analysis along with classification using a modified wavelet transform, known as S-transform. Case studies for detection and classification several complex power quality disturbances for impulsive transients using S-transform have been corroborated in this paper and the results contained in this paper validate superiority of S-transform over wavelet transform.","PeriodicalId":197298,"journal":{"name":"2010 9th International Conference on Environment and Electrical Engineering","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127840133","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
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