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2015 9th International Symposium on Advanced Topics in Electrical Engineering (ATEE)最新文献

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On-line power systems voltage stability monitoring using artificial neural networks 基于人工神经网络的电力系统电压稳定在线监测
2015 9th International Symposium on Advanced Topics in Electrical Engineering (ATEE) Pub Date : 2015-05-07 DOI: 10.1109/ATEE.2015.7133884
C. Bulac, I. Tristiu, Alexandru Mandiş, L. Toma
{"title":"On-line power systems voltage stability monitoring using artificial neural networks","authors":"C. Bulac, I. Tristiu, Alexandru Mandiş, L. Toma","doi":"10.1109/ATEE.2015.7133884","DOIUrl":"https://doi.org/10.1109/ATEE.2015.7133884","url":null,"abstract":"A method for on-line voltage stability monitoring of a power system based on Multilayer Perceptron (MLP) neural network is proposed in this paper. Considering that the power system is operating under quasistatic conditions, by using power flow model and singular value decomposition of the reduced Jacobian matrix, a suitable index to quantify the proximity of power system voltage instability is defined. Then, a neuronal network is trained to learn the correlation between the key factors of the voltage stability phenomena and this index. Once trained, the neural network provides the above mentioned voltage stability index as output for a predefined set of input variables that are known as directly influencing the stability conditions of the power system. Since the input variables for the neural network may be obtained from the steady state estimator, the proposed method can be implemented as a function of the Energy Management System (EMS) for on-line voltage stability monitoring. Tests are carried out using the IEEE 30-bus system, where different operating scenarios are considered.","PeriodicalId":103513,"journal":{"name":"2015 9th International Symposium on Advanced Topics in Electrical Engineering (ATEE)","volume":"515 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123074789","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: 14
Analysis, characterization and optimization of a steerer magnet prototype 转向磁体样机的分析、表征与优化
2015 9th International Symposium on Advanced Topics in Electrical Engineering (ATEE) Pub Date : 2015-05-07 DOI: 10.1109/ATEE.2015.7133847
D. Dan, I. Chiriță, N. Tănase, Simona Malureanu
{"title":"Analysis, characterization and optimization of a steerer magnet prototype","authors":"D. Dan, I. Chiriță, N. Tănase, Simona Malureanu","doi":"10.1109/ATEE.2015.7133847","DOIUrl":"https://doi.org/10.1109/ATEE.2015.7133847","url":null,"abstract":"This paper presents the analysis, characterization and optimization of a dipole magnet prototype for The High-Energy Storage Ring (HESR) of the Facility for Antiproton and Ion Research (FAIR). Magnet design and construction, according to beneficiary requirements, are presented. A 2D magnetic modeling optimization of the magnetic pole shape is required in order to obtain a good homogeneity of the magnetic field in the center of the magnet. The numeric modeling is validated by magnetic measurements made on the considered prototype, using a measurement system with Hall Probe.","PeriodicalId":103513,"journal":{"name":"2015 9th International Symposium on Advanced Topics in Electrical Engineering (ATEE)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115297877","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
Optimization of a power system with distributed generation source 分布式发电系统的优化设计
2015 9th International Symposium on Advanced Topics in Electrical Engineering (ATEE) Pub Date : 2015-05-07 DOI: 10.1109/ATEE.2015.7133930
L. Dulau
{"title":"Optimization of a power system with distributed generation source","authors":"L. Dulau","doi":"10.1109/ATEE.2015.7133930","DOIUrl":"https://doi.org/10.1109/ATEE.2015.7133930","url":null,"abstract":"This paper describes the optimization of a power system that has connected a distributed generation source (a distributed generator). The optimal location of the distributed generator is determined first based on the power losses. Then, the optimization is performed for two objective functions, the generation cost and the power losses, subjected to constraints. The optimization is performed for two cases: when the distributed generator is connected to the system, and when the distributed generator is not connected to the system. The optimization results for the two cases are presented. The analyzes are performed with a specialized software for the simulation and analysis of power systems.","PeriodicalId":103513,"journal":{"name":"2015 9th International Symposium on Advanced Topics in Electrical Engineering (ATEE)","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131426241","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
Introducing the topic's “Hydrogen a vector of energy” in curriculum of ‘Initiation in Creating Products’ by using ‘Theory of inventive problems solving’ (TRIZ) 运用“创新问题解决理论”(TRIZ)在“创新产品入门”课程中引入“氢的能量矢量”主题
2015 9th International Symposium on Advanced Topics in Electrical Engineering (ATEE) Pub Date : 2015-05-07 DOI: 10.1109/ATEE.2015.7133682
Petropol Serb Gabriela Dana, Petropol-Serb Ion
{"title":"Introducing the topic's “Hydrogen a vector of energy” in curriculum of ‘Initiation in Creating Products’ by using ‘Theory of inventive problems solving’ (TRIZ)","authors":"Petropol Serb Gabriela Dana, Petropol-Serb Ion","doi":"10.1109/ATEE.2015.7133682","DOIUrl":"https://doi.org/10.1109/ATEE.2015.7133682","url":null,"abstract":"The paper is a case study of applying active learning in Master program, in the curriculum of `Initiation in Creating Products'. The goal of the paper is to propose a scenario which concerns the first phase of product development. The trigger could be a review of the scientific research about fuel cells. Because Hydrogen is the source of this system, the first step of this theme is to introduce it, as a vector of energy. Based on the concept of innovative TRIZ method, this scenario could be the point of start for the students to propose a Universal Design program for a PEMFC when the aim is to use it as a source in a classical system (hybrid traction, cogeneration, etc.). The work brings together modern methods of thinking and is addressing, equally, to the teachers, students or researchers. The scenario, as a final result, could be applied on different subjects who are involved in an innovative system based on fuel cells.","PeriodicalId":103513,"journal":{"name":"2015 9th International Symposium on Advanced Topics in Electrical Engineering (ATEE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130917477","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
Electric field distribution and SAR in human head from mobile phones 手机对人体头部的电场分布和SAR
2015 9th International Symposium on Advanced Topics in Electrical Engineering (ATEE) Pub Date : 2015-05-07 DOI: 10.1109/ATEE.2015.7133835
V. Stanković, D. Jovanović, D. Krstić, Nenad N. Cvetković
{"title":"Electric field distribution and SAR in human head from mobile phones","authors":"V. Stanković, D. Jovanović, D. Krstić, Nenad N. Cvetković","doi":"10.1109/ATEE.2015.7133835","DOIUrl":"https://doi.org/10.1109/ATEE.2015.7133835","url":null,"abstract":"This paper presents the distribution of electric field inside a human head as well as around the electromagnetic field source, i.e. the mobile phone. Specific Absorption Rate (SAR), which is obtained inside a human head and the thermal effect due to exposure to electric field from mobile phone was presented. For this research two different models of human head have been used. In the first case electromagnetic parameters of biological tissues of human head were modeled with a volumetric interpolation function that estimates the characteristics of a given tissue inside the human head while in the second case model with layers was used. The layers represent human head parts (skin, fat tissue, muscles, the skull, and the brain). The parts of the human head are based on their electromagnetic properties (conductivity, electric permittivity, and magnetic permeability). In order to obtain the electric field distribution for different cross-sections, the numerical calculation based on the Finite Integration Technique (FIT) and Finite Element Method (FEM) was performed.","PeriodicalId":103513,"journal":{"name":"2015 9th International Symposium on Advanced Topics in Electrical Engineering (ATEE)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131404649","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: 15
Finding the representative wind power plants for the development of an upscaling wind power forecast algorithm 寻找具有代表性的风电场，开发一种规模化的风电功率预测算法
2015 9th International Symposium on Advanced Topics in Electrical Engineering (ATEE) Pub Date : 2015-05-07 DOI: 10.1109/ATEE.2015.7133908
P. Razusi, Daniela Gusa, Alexandru Mandiş
{"title":"Finding the representative wind power plants for the development of an upscaling wind power forecast algorithm","authors":"P. Razusi, Daniela Gusa, Alexandru Mandiş","doi":"10.1109/ATEE.2015.7133908","DOIUrl":"https://doi.org/10.1109/ATEE.2015.7133908","url":null,"abstract":"In Romania, wind power has found a favorable environment, in both legislation as well as in the natural conditions, to evolve and meet the targets imposed by the European Union. As a consequence, in just five years, starting from the 1st of January 2010, the installed wind power had an increase of almost 23410%, reaching today 2952.854 MW. This large value and the uncontrollable and stochastic character of wind increases the difficulty of power system operation. In order to help the operators, wind power forecasting systems are needed so that a close-to-reality planning of the power system can be made. One critical component of these systems is the upscaling algorithm used to extrapolate the wind power plant (WPP) level forecasts for a large area. To this end, some representative WPPs are needed. This paper is presenting the first steps taken in finding the representative WPPs in order to create an upscaling algorithm for the Romanian power system. The entire analysis is made on real production data recorded through the EMS/SCADA system that runs at the Romanian transmission system operator (TSO).","PeriodicalId":103513,"journal":{"name":"2015 9th International Symposium on Advanced Topics in Electrical Engineering (ATEE)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114243099","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
CAD for three phase ONAN cooling system transformers 三相ONAN冷却系统变压器CAD
2015 9th International Symposium on Advanced Topics in Electrical Engineering (ATEE) Pub Date : 2015-05-07 DOI: 10.1109/ATEE.2015.7133672
Robert-Constantin Dragomir, I. Deaconu, A. Chirilă, A. Deaconu, V. Năvrăpescu
{"title":"CAD for three phase ONAN cooling system transformers","authors":"Robert-Constantin Dragomir, I. Deaconu, A. Chirilă, A. Deaconu, V. Năvrăpescu","doi":"10.1109/ATEE.2015.7133672","DOIUrl":"https://doi.org/10.1109/ATEE.2015.7133672","url":null,"abstract":"This paper presents a Computer-Aided Design method for a three phase power transformer using MATLAB programming environment. The considered transformer is Oil Natural Air Natural cooling system type. During the designing by changing the value of just one single variable implies to recalculate everything. Such operation is time consuming but this drawback can be overcome by fully automating the design procedure, for example using MATLAB. The developed program is written in script format so that it can be easily modified to fit the imposed parameters of the transformer. The designing algorithm of the transformer has been optimized. Thus, it has ten steps with nine validation checkpoints. It may also be used as an educational model. The validations are implemented into the code and are required because there is no sure-fire method for designing a transformer from the first attempt. During the design it is necessary to change various values. Thus, only when all nine verifications are satisfied one may conclude that the transformer is well designed.","PeriodicalId":103513,"journal":{"name":"2015 9th International Symposium on Advanced Topics in Electrical Engineering (ATEE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115922556","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
Sigmoid functions used in hysteresis phenomenon modeling Sigmoid函数在迟滞现象建模中的应用
2015 9th International Symposium on Advanced Topics in Electrical Engineering (ATEE) Pub Date : 2015-05-07 DOI: 10.1109/ATEE.2015.7133863
L. Petrescu, E. Cazacu, Catalina Petrescu
{"title":"Sigmoid functions used in hysteresis phenomenon modeling","authors":"L. Petrescu, E. Cazacu, Catalina Petrescu","doi":"10.1109/ATEE.2015.7133863","DOIUrl":"https://doi.org/10.1109/ATEE.2015.7133863","url":null,"abstract":"Hysteresis phenomenon is currently met in magnetic materials characterization. From many years this hysteresis had been modeled with different approaches. The aim of this paper is to present a comparison between few sigmoid functions used more often in other research areas. The functions were updated according to the requirements of the magnetic hysteresis and there comparisons for three different magnetic materials were performed. In the last part, hysteresis losses are evaluated using relative errors between experimental loop area and modeled loop area.","PeriodicalId":103513,"journal":{"name":"2015 9th International Symposium on Advanced Topics in Electrical Engineering (ATEE)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120857080","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: 14
Multi-scale and reduced modelling of biological systems 生物系统的多尺度和简化模型
2015 9th International Symposium on Advanced Topics in Electrical Engineering (ATEE) Pub Date : 2015-05-07 DOI: 10.1109/ATEE.2015.7133876
Ruxandra Bărbulescu, D. Ioan
{"title":"Multi-scale and reduced modelling of biological systems","authors":"Ruxandra Bărbulescu, D. Ioan","doi":"10.1109/ATEE.2015.7133876","DOIUrl":"https://doi.org/10.1109/ATEE.2015.7133876","url":null,"abstract":"In systems biology there is an intrinsic need for multiscale modelling, because physiological functions account for many spatial / time scales and processes, with a close connection between multi-scale, multi-physics approaches and model reduction. The paper is an overview attempting to transmit a new perspective on modelling of complex biological systems. We discuss the key points in system-level analysis and multi-scale modelling of bio-systems, making a classification of methods used in different scales and characterizing the multi-scale approach. The main contribution is the presentation of role and importance of complexity reduction in the multiscale modelling of biosystems, proposing in this respect a procedure proven to be efficient for multiphysics structures.","PeriodicalId":103513,"journal":{"name":"2015 9th International Symposium on Advanced Topics in Electrical Engineering (ATEE)","volume":"99 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116651076","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
Free surface flow over the broad — Crested weir 宽顶堰的自由水面水流
2015 9th International Symposium on Advanced Topics in Electrical Engineering (ATEE) Pub Date : 2015-05-07 DOI: 10.1109/ATEE.2015.7133881
N. Tanase, D. Broboană, C. Balan
{"title":"Free surface flow over the broad — Crested weir","authors":"N. Tanase, D. Broboană, C. Balan","doi":"10.1109/ATEE.2015.7133881","DOIUrl":"https://doi.org/10.1109/ATEE.2015.7133881","url":null,"abstract":"The free surface flow around immersed bodies is a current CFD problem in applied fluid mechanics. The aim of this paper is to present a comparative study between experiments and numerical simulations of the flow around immersed bodies in vicinity of the free surface. The free surface flows in a planar channel were experimentally investigated in subcritical regim at Reynolds number Re = 3500, respectively Froude number Fr = 0.06. Numerical simulations are performed with the FLUENT code, RNG k-ε turbulent model and the volume of fluid (VOF) model for calculating the free surface geometry being used. The computational results showed a close agreement with experimental data obtained in the laboratory for the flow over the broad - crested weir with smooth and patterned surfaces.","PeriodicalId":103513,"journal":{"name":"2015 9th International Symposium on Advanced Topics in Electrical Engineering (ATEE)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117274877","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: 5
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