11th International Conference on Electrical Power Quality and Utilisation最新文献

Specialist tool for monitoring the measurement degradation process of induction active energy meters 监测感应有源电能表测量退化过程的专用工具

11th International Conference on Electrical Power Quality and Utilisation Pub Date : 2011-12-01 DOI: 10.1109/EPQU.2011.6128831

M. R. Silva, L. Galotto, J. Pinto, C. Canesin, E. H. Cardoso, S. Amorim, E. A. Mertens

{"title":"Specialist tool for monitoring the measurement degradation process of induction active energy meters","authors":"M. R. Silva, L. Galotto, J. Pinto, C. Canesin, E. H. Cardoso, S. Amorim, E. A. Mertens","doi":"10.1109/EPQU.2011.6128831","DOIUrl":"https://doi.org/10.1109/EPQU.2011.6128831","url":null,"abstract":"This paper presents a methodology and a specialist tool for failure probability analysis of induction type watt-hour meters, considering the main variables related to their measurement degradation processes. The database of the metering park of a distribution company, named Elektro Electricity and Services Co., was used for determining the most relevant variables and to feed the data in the software. The modeling developed to calculate the watt-hour meters probability of failure was implemented in a tool through a user friendly platform, written in Delphi language. Among the main features of this tool are: analysis of probability of failure by risk range; geographical localization of the meters in the metering park, and automatic sampling of induction type watt-hour meters, based on a risk classification expert system, in order to obtain information to aid the management of these meters. The main goals of the specialist tool are following and managing the measurement degradation, maintenance and replacement processes for induction watt-hour meters.","PeriodicalId":369941,"journal":{"name":"11th International Conference on Electrical Power Quality and Utilisation","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125917835","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

Harmonic propagation analysis in electric energy distribution systems 电力配电系统中的谐波传播分析

11th International Conference on Electrical Power Quality and Utilisation Pub Date : 2011-12-01 DOI: 10.1109/EPQU.2011.6128827

L. C. O. Oliveira, G. A. E. e Melo, J. B. Souza, C. Canesin, B. Bonatto, F. Belchior, M. Oliveira, E. A. Mertens

{"title":"Harmonic propagation analysis in electric energy distribution systems","authors":"L. C. O. Oliveira, G. A. E. e Melo, J. B. Souza, C. Canesin, B. Bonatto, F. Belchior, M. Oliveira, E. A. Mertens","doi":"10.1109/EPQU.2011.6128827","DOIUrl":"https://doi.org/10.1109/EPQU.2011.6128827","url":null,"abstract":"An important alteration of the equivalent loads profile has been observed in the electrical energy distribution systems, for the last years. Such fact is due to the significant increment of the electronic processors of electric energy that, in general, behave as nonlinear loads, generating harmonic distortions in the currents and voltages along the electric network. The effects of these nonlinear loads, even if they are concentrated in specific sections of the network, are present along the branch circuits, affecting the behavior of the entire electric network. For the evaluation of this phenomenon it is necessary the analysis of the harmonic currents flow and the understanding of the causes and effects of the consequent voltage harmonic distortions. The usual tools for calculation the harmonic flow consider one-line equivalent networks, balanced and symmetrical systems. Therefore, they are not tools appropriate for analysis of the operation and the influence/interaction of mitigation elements. In this context, this work proposes the development of a computational tool for the analysis of the three-phase harmonic propagation using Norton modified models and considering the real nature of unbalanced electric systems operation.","PeriodicalId":369941,"journal":{"name":"11th International Conference on Electrical Power Quality and Utilisation","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132738337","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: 8

Generation of high resolution wind speeds and wind speed arrays inside a wind farm based on real site data 根据实际现场数据在风电场内生成高分辨率风速和风速阵列

11th International Conference on Electrical Power Quality and Utilisation Pub Date : 2011-10-29 DOI: 10.1109/EPQU.2011.6128927

A. Attya, T. Hartkopf

引用次数: 12

Novel data-driven methodologies for parameter estimation and interpretation of fuel cells performance 用于燃料电池性能参数估计和解释的新颖数据驱动方法

11th International Conference on Electrical Power Quality and Utilisation Pub Date : 2011-10-17 DOI: 10.1109/EPQU.2011.6128882

V. V. Lopes, A. Novais, C. M. Rangel

{"title":"Novel data-driven methodologies for parameter estimation and interpretation of fuel cells performance","authors":"V. V. Lopes, A. Novais, C. M. Rangel","doi":"10.1109/EPQU.2011.6128882","DOIUrl":"https://doi.org/10.1109/EPQU.2011.6128882","url":null,"abstract":"Fuel cell based power generation systems are expected to become more widespread in the near future. Stationary fuel cells may be used as an uninterruptible or back-up power supply, or to supply micro-grids. In particular, proton exchange membrane fuel cells (PEMFC) are an attractive technology due to its high energy density, rigid and simple structure, low operating temperature and fast start-up characteristics. The power quality assessment of fuel cells as a viable power sources requires a good understanding of the fuel cell performance characteristics. This paper presents two novel data-driven methodologies for the identification of the main steady state (polarization curve) and the dynamic (impedance response) characteristics for fuel-cells allowing the development of rapid, accurate and empirical models based on the experimental data. M-NMF is a modified non-negative matrix factorization technique developed for the analysis of polarization curve data that allows to identify the three main contributions for the fuel-cell power degradation, while for impedance spectroscopy data, this paper proposes the use of fractional order transfer functions (FC-FOTC) to describe the main dynamic modes present in the fuel-cell. A brief description of these two approaches is presented, together with the analysis of a real experimental dataset obtained from a 12W open cathode PEMFC stack to illustrate their potential and scope. While the former is instrumental for the deconvolution of the fuel cell polarization curves into its major components, the latter enables the estimation of the parameters related to the inherent transport and kinetic phenomena, thus opening the way, in both cases, for the interpretation of the effect of the operating conditions on the relative dominance and magnitude of these components and phenomena.","PeriodicalId":369941,"journal":{"name":"11th International Conference on Electrical Power Quality and Utilisation","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125403586","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 of electric vehicle chargers for power system analysis 用于电力系统分析的电动汽车充电器建模

11th International Conference on Electrical Power Quality and Utilisation Pub Date : 2011-10-17 DOI: 10.1109/EPQU.2011.6128816

A. Collin, S. Djokic, Huw F. Thomas, Jan Meyer

引用次数: 31

Smart grid accommodation of distributed generation for more reliable quality of supply 智能电网适应分布式发电，提供更可靠的供电质量

11th International Conference on Electrical Power Quality and Utilisation Pub Date : 2011-10-01 DOI: 10.1109/EPQU.2011.6128876

G. Błajszczak, P. Antos, M. Wasiluk-Hassa

引用次数: 4

CO2 emission performance assessment of a residential PV/FC/battery power system 住宅光伏/FC/电池供电系统的CO2排放性能评估

11th International Conference on Electrical Power Quality and Utilisation Pub Date : 2011-10-01 DOI: 10.1109/EPQU.2011.6128924

Yoichi Tanaka

{"title":"CO2 emission performance assessment of a residential PV/FC/battery power system","authors":"Yoichi Tanaka","doi":"10.1109/EPQU.2011.6128924","DOIUrl":"https://doi.org/10.1109/EPQU.2011.6128924","url":null,"abstract":"This paper presents an evaluation of the CO2 emission performance of a residential combined photovoltaic(PV), fuel cell(FC) and battery power system, whose commercialization in the near future shows promise considering that photovoltaic and fuel cell dual power generation systems are gaining popularity and residential battery power storage systems are being commercialized. A mathematical model of the power system is formulated as a mixed integer programming problem to make the optimal operation schedule for the system. The mathematical model includes electricity balance, heat balance and characteristics of system components. Annual CO2 emissions of 14 houses with the PV/FC/Battery power system were calculated assuming optimal system operations were conducted. The real-life electricity and heat demand data of 14 houses were used for these calculations. The calculations were carried out in “No battery”, “With battery” and “With battery and No backward flow” scenarios and the results compared. This research clarifies the CO2 emission performance of a PV/FC/Battery system as well as the reason behind the CO2 reduction and the change of CO2 emission performance when power backward flow is controlled.","PeriodicalId":369941,"journal":{"name":"11th International Conference on Electrical Power Quality and Utilisation","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127113539","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

Negative-sequence active power stream as an index of unbalance source 负序有功潮流作为不平衡源的指标

11th International Conference on Electrical Power Quality and Utilisation Pub Date : 2011-10-01 DOI: 10.1109/EPQU.2011.6128928

Z. Hanzelka, Y. Varetsky

引用次数: 14

Management of storks and quality of Energy Service: Stork project 鹳鸟管理与能源服务质量:鹳鸟项目

11th International Conference on Electrical Power Quality and Utilisation Pub Date : 2011-10-01 DOI: 10.1109/EPQU.2011.6128891

P. Carreira, Luís M. G. Maricato, N. Mendes, F. Bastião, V. M. Madeira, A. D. de Almeida

引用次数: 2

Performance analysis and computational model validation of a real scale saturated core reactor 真实规模饱和堆芯反应堆性能分析及计算模型验证

11th International Conference on Electrical Power Quality and Utilisation Pub Date : 2011-10-01 DOI: 10.1109/EPQU.2011.6128952

J. Barbosa, J. Oliveira, I. N. Gondim, T. V. Silva, F. P. Santilio, A. B. Vasconcellos, J. Pacheco

引用次数: 1