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Melecon 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference最新文献

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Specific heat of a ferroelectric PZT ceramic at the morphotropic phase boundary 铁电PZT陶瓷在致晶相边界处的比热
Melecon 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference Pub Date : 2010-07-04 DOI: 10.1109/ICSD.2010.5568033
S. Lang, J. Lashley, K. Modic, R. Fisher, W. Zhu, Z. Ye
{"title":"Specific heat of a ferroelectric PZT ceramic at the morphotropic phase boundary","authors":"S. Lang, J. Lashley, K. Modic, R. Fisher, W. Zhu, Z. Ye","doi":"10.1109/ICSD.2010.5568033","DOIUrl":"https://doi.org/10.1109/ICSD.2010.5568033","url":null,"abstract":"Ferroelectric ceramic materials have a wide range of applications because of their piezoelectric and pyroelectric properties. One of their most important physical properties is the specific heat. In this study, the specific heats of a series of lead-zirconate-titanate (PZT) compositions in the vicinity of the morphotropic phase boundary (MPB) were measured. The temperature range was from 1.8 to 300 K. It is believed that these are the lowest temperature measurements ever made on PZT. Differences between the specific heats of the different compositions were very small. However, the calculated Debye temperatures were slightly different. The results are useful in computing design parameters for technical devices.","PeriodicalId":256057,"journal":{"name":"Melecon 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114780971","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
Individual plant recognition using the RGB color model 单株植物识别使用RGB颜色模型
Melecon 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference Pub Date : 2010-04-26 DOI: 10.1109/MELCON.2010.5476365
M. Tilneac, V. Dolga
{"title":"Individual plant recognition using the RGB color model","authors":"M. Tilneac, V. Dolga","doi":"10.1109/MELCON.2010.5476365","DOIUrl":"https://doi.org/10.1109/MELCON.2010.5476365","url":null,"abstract":"Changes in light intensity cause major difficulties in the plant recognition. In order to solve this problem, we started the development of a plant recognition method, with high efficiency in variable lighting conditions. This will be implemented to an autonomous mobile robot for weed control. The method consists in determining of dependency relations between the leaves color and the light intensity.","PeriodicalId":256057,"journal":{"name":"Melecon 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117063822","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
Intelligent management of distributed generators reactive power for loss minimization and voltage control 分布式发电机无功功率的智能管理，以实现损耗最小化和电压控制
Melecon 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference Pub Date : 2010-04-26 DOI: 10.1109/MELCON.2010.5475998
M. Z. Che Wanik, I. Erlich, A. Mohamed
{"title":"Intelligent management of distributed generators reactive power for loss minimization and voltage control","authors":"M. Z. Che Wanik, I. Erlich, A. Mohamed","doi":"10.1109/MELCON.2010.5475998","DOIUrl":"https://doi.org/10.1109/MELCON.2010.5475998","url":null,"abstract":"This paper presents an intelligent approach for managing reactive power from a group of distributed generators (DG) connected to low voltage (LV) bus. The objective is to minimize active power losses and keep the voltage profiles in the network within specified limit. This approach finds optimal DG reactive power and optimal tap changer position for main substation transformer every fifteen minutes. The effectiveness of the proposed approach is demonstrated in finding twelve DGs reactive power and optimal tap position in a test network. Optimization results shows that this approach manages to reduce power losses and at the same time keeping the voltages within required limit. Intelligent management approach presented in paper is suitable to be integrated into energy management scheme under smart grid concept.","PeriodicalId":256057,"journal":{"name":"Melecon 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127213839","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: 24
Control of doubly fed induction machine using a matrix converter 基于矩阵变换器的双馈感应电机控制
Melecon 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference Pub Date : 2010-04-26 DOI: 10.1109/MELCON.2010.5475960
K. Spiteri, C. Spiteri Staines, M. Apap
{"title":"Control of doubly fed induction machine using a matrix converter","authors":"K. Spiteri, C. Spiteri Staines, M. Apap","doi":"10.1109/MELCON.2010.5475960","DOIUrl":"https://doi.org/10.1109/MELCON.2010.5475960","url":null,"abstract":"This paper presents the control of a doubly fed induction machine (DFIM) via a matrix converter applied to the machine's rotor side. The experimental set-up shall be used to show its viability for wind energy applications. Stator Field Oriented control of the machine was implemented for active and reactive power control. The effects of harmonics, present in the rotor windings, on the control scheme were analysed. The paper also presents experimental results for power control and variable speed operation of the DFIM.","PeriodicalId":256057,"journal":{"name":"Melecon 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125828932","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
Assessment of renewable wind resources in UK urban areas 英国城市地区可再生风能资源评估
Melecon 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference Pub Date : 2010-04-26 DOI: 10.1109/MELCON.2010.5476217
J. Acosta, S. Djokic
{"title":"Assessment of renewable wind resources in UK urban areas","authors":"J. Acosta, S. Djokic","doi":"10.1109/MELCON.2010.5476217","DOIUrl":"https://doi.org/10.1109/MELCON.2010.5476217","url":null,"abstract":"Renewable wind resources in UK urban areas are analysed in this paper based on the available wind speed measurements and wind turbine manufacturers' data. Power curves of selected wind turbines and measured/fitted wind speed distributions for considered UK urban sites are used for the estimation of wind turbines maximum annual energy outputs. These results are then compared with the energy outputs obtained when commonly assumed UK mean wind speed values and Rayleigh distribution of average wind speeds are used instead of the measurements. The paper concludes that standard assumptions for UK mean wind speeds and Rayleigh distribution cannot be used for the correct assessment of UK urban wind resources, while Weibull distribution can be used if corresponding factors k and λ are determined from the measured wind speed data.","PeriodicalId":256057,"journal":{"name":"Melecon 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125853538","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
Price definitions in energy contracts with investor owned generation 投资者拥有发电的能源合同中的价格定义
Melecon 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference Pub Date : 2010-04-26 DOI: 10.1109/MELCON.2010.5476293
R. Bualoti, M. Trovato, M. Çelo
{"title":"Price definitions in energy contracts with investor owned generation","authors":"R. Bualoti, M. Trovato, M. Çelo","doi":"10.1109/MELCON.2010.5476293","DOIUrl":"https://doi.org/10.1109/MELCON.2010.5476293","url":null,"abstract":"Nowadays IPP's power plant construction is encouraged by the current deregulatory climate, and the financing technique employed to implement these projects is often the project financing formula. This means that an investor consortium, usually foreigner, plan, build, operate the power plant, and sell the generated electricity to the host utility. The sale price is determined from the expected IPP's production cost, enhanced of the expected welfare obtainable by selling electricity. This paper proposes a methodology for linking the uncertainty of the future production cost with the price of the electricity generated by an IPP. This is a stochastic approach to the sale price definition problem, while usually a deterministic procedure is used.","PeriodicalId":256057,"journal":{"name":"Melecon 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115052266","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
Algorithms of detection and elimination of interruptions in WiMAX WiMAX中中断检测与消除算法
Melecon 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference Pub Date : 2010-04-26 DOI: 10.1109/MELCON.2010.5476331
D. Zvikhachevsky, V. Eremenko
{"title":"Algorithms of detection and elimination of interruptions in WiMAX","authors":"D. Zvikhachevsky, V. Eremenko","doi":"10.1109/MELCON.2010.5476331","DOIUrl":"https://doi.org/10.1109/MELCON.2010.5476331","url":null,"abstract":"In this article the reasons of occurrence of extralegal interruptions and issues related to updating of algorithms of their elimination in wireless WiMAX broadband networks are considered.","PeriodicalId":256057,"journal":{"name":"Melecon 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference","volume":"382 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122858234","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
Risk sensitivity of failure rate and maintenance expenditure: application of VaR metrics in risk management 故障率和维修费用的风险敏感性:VaR指标在风险管理中的应用
Melecon 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference Pub Date : 2010-04-26 DOI: 10.1109/MELCON.2010.5476316
A. Schreiner, G. Balzer, A. Precht
{"title":"Risk sensitivity of failure rate and maintenance expenditure: application of VaR metrics in risk management","authors":"A. Schreiner, G. Balzer, A. Precht","doi":"10.1109/MELCON.2010.5476316","DOIUrl":"https://doi.org/10.1109/MELCON.2010.5476316","url":null,"abstract":"Risk analysis is becoming actually an important part of asset management of power systems. The paper presents the simple but reliable method for risk management of power system carried out for an urban 10 kV network located in Germany. The basis of the method is the indication of risks by Value at Risk index according to Loss Distribution Approach developed by the insurance and financial industry. The Loss Distribution Approach is based on estimation of the frequency and severity distribution of failure events over a one year time horizon. Especially the proposed approach combines the probability and severity of risk contingencies based on reliability indices of the system assets. The indices are finally applied for sensitivity analysis of two particular risk factors, failure rate and maintenance expenditure.","PeriodicalId":256057,"journal":{"name":"Melecon 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114491053","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
Modelling different scenarios of Virtual Power Plant operating possibilities 模拟虚拟电厂运行可能性的不同情景
Melecon 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference Pub Date : 2010-04-26 DOI: 10.1109/MELCON.2010.5476233
T. Dragičević, D. Skrlec, M. Delimar
{"title":"Modelling different scenarios of Virtual Power Plant operating possibilities","authors":"T. Dragičević, D. Skrlec, M. Delimar","doi":"10.1109/MELCON.2010.5476233","DOIUrl":"https://doi.org/10.1109/MELCON.2010.5476233","url":null,"abstract":"This paper compares various models of steering strategies for a portfolio of Distributed Energy Resources (DER). Virtual Power Plant (VPP) is a flexible representation of such a portfolio, and one of its key assignments is to guide each DER in order to dispatch desirable active power. Portfolio includes two controllable synchronous generators (CHP), two wind turbines, ten photovoltaic plants and a fuel cell turbine. Stochastic nature of load demand and output power from renewable energy resources is taken into account. An algorithm was developed, based upon active power requests for VPP, weather conditions and expected consumer loading, which optimizes dispatch of controllable generators in order to track the production of intermittent sources and in that way make VPP wanted output. Simulations were carried out on a real distribution network (Sopot, part of Zagreb) through one usual consumption day comparing three scenarios of VPP controllability and investigating the best scenario either for the Distribution System Operator (DSO), either for VPP. Results demonstrate that the algorithm is able to efficiently control the portfolio and, based upon the primary requirements for VPP, either to maximize reduction of total losses in the distribution network, to cut off the peak demand from external grid, or to produce constant power through whole day.","PeriodicalId":256057,"journal":{"name":"Melecon 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114491955","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: 10
A numerical model of investigating the electric field in dielectric liquid 研究介电液体中电场的数值模型
Melecon 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference Pub Date : 2010-04-26 DOI: 10.1109/MELCON.2010.5476252
A. El-Zein, M. Talaat
{"title":"A numerical model of investigating the electric field in dielectric liquid","authors":"A. El-Zein, M. Talaat","doi":"10.1109/MELCON.2010.5476252","DOIUrl":"https://doi.org/10.1109/MELCON.2010.5476252","url":null,"abstract":"The initial filamentary streamers in liquid dielectrics drastically changes by the tip curvature of the electrode and the applied voltage. In this paper to get the non uniform field a sphere-to-plane electrodes configuration is used. Also, an immersed air bubble adjacent to the sphere electrode is presented, to obtain the sharp tip, after the air bubble compressed against the sphere electrode i.e., sharp conducting protrusion tip, which considered as a source of high non-uniform field and streamer initiation. A simulation model for field distribution in the dielectric medium is presented by using Finite Element Method. An experimental technique was used to investigate the accuracy of the field simulation. Also an analytical equation for field calculation was used to investigate the percentage field error.","PeriodicalId":256057,"journal":{"name":"Melecon 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129952330","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
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