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Efficient adjust of a learning based fault locator for power distribution systems 基于学习的配电系统故障定位器的有效调整
2010 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America (T&D-LA) Pub Date : 2010-11-01 DOI: 10.1109/TDC-LA.2010.5762972
J. Gutiérrez-Gallego, S. Pérez-Londoño, J. Mora-Flórez
{"title":"Efficient adjust of a learning based fault locator for power distribution systems","authors":"J. Gutiérrez-Gallego, S. Pérez-Londoño, J. Mora-Flórez","doi":"10.1109/TDC-LA.2010.5762972","DOIUrl":"https://doi.org/10.1109/TDC-LA.2010.5762972","url":null,"abstract":"The fault location method proposed in this paper uses a classification technique as the support vector machines (SVM), and an intelligent search based on variable neighborhood techniques to select the configuration parameters of the SVM. As result, a strategy is proposed to relate a set of descriptor obtained from single end measurements of voltage and current (input) to the faulted zone (output), in a classical classification task. The proposed approach is tested in selection of the best calibration parameters of a SVM based fault locator and the best error in classification of 3.7% is then obtained considering all of the fault types. These results show the adequate performance of the proposed methodology applied in real power systems.","PeriodicalId":222318,"journal":{"name":"2010 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America (T&D-LA)","volume":"235 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133735632","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
Techniques for network simplification for voltage variation analysis in steady-state caused by wind farm integrated on power system 并网风电场稳态电压变化分析的网络简化技术
2010 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America (T&D-LA) Pub Date : 2010-11-01 DOI: 10.1109/TDC-LA.2010.5762879
C. Oliveira, M. F. de Medeiros, J. Oliveira, B. A. da Silva Pires
{"title":"Techniques for network simplification for voltage variation analysis in steady-state caused by wind farm integrated on power system","authors":"C. Oliveira, M. F. de Medeiros, J. Oliveira, B. A. da Silva Pires","doi":"10.1109/TDC-LA.2010.5762879","DOIUrl":"https://doi.org/10.1109/TDC-LA.2010.5762879","url":null,"abstract":"This work presents a description of the development of a model for representation of simplified grid applied in hybrid load flow for calculation of the voltage variations in steady-state provoked by wind farm on power system. At the beginning of the analysis process on system, lead for the wind producer, it has as base given technician data supplied by the concessionaire. The main aim consists to propose models of simplified networks that allow to the necessity of the knowledge only of the data referring the internal network, that is, the parcel of the network of interest for analysis. This way, it is intended to supply forms for auxiliary in the systematization of the relations between the sector agents. The model of simplified network proposed identifies the internal network, external network and the boundary buses from a vulnerability study of the grid, testing to the boundary buses active and reactive powers floating model (slack buses). It was opted to apply the cited model in a hybrid load flow, composite by Gauss Seidel Zbus and Summation Power methods. Finally, presents the results obtained for a developed computational environment of FORTRAN, with their respective analysis and conclusion.","PeriodicalId":222318,"journal":{"name":"2010 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America (T&D-LA)","volume":"127 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134338435","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
Spatial load forecasting using a demand propagation approach 基于需求传播方法的空间负荷预测
2010 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America (T&D-LA) Pub Date : 2010-11-01 DOI: 10.1109/TDC-LA.2010.5762882
J. Melo, E. Carreno, A. Padilha-Feltrin
{"title":"Spatial load forecasting using a demand propagation approach","authors":"J. Melo, E. Carreno, A. Padilha-Feltrin","doi":"10.1109/TDC-LA.2010.5762882","DOIUrl":"https://doi.org/10.1109/TDC-LA.2010.5762882","url":null,"abstract":"A method for spatial electric load forecasting using multi-agent systems, especially suited to simulate the local effect of special loads in distribution systems is presented. The method based on multi-agent systems uses two kinds of agents: reactive and proactive. The reactive agents represent each sub-zone in the service zone, characterizing each one with their corresponding load level, represented in a real number, and their relationships with other sub-zones represented in development probabilities. The proactive agent carry the new load expected to be allocated because of the new special load, this agent distribute the new load in a propagation pattern. The results are presented with maps of future expected load levels in the service zone. The method is tested with data from a mid-size city real distribution system, simulating the effect of a load with attraction and repulsion attributes. The method presents good results and performance.","PeriodicalId":222318,"journal":{"name":"2010 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America (T&D-LA)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134277462","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: 9
Proposals for improvement of methodology and process of collecting and analyzing compatibility of power quality indicators in distribution systems 改进配电系统电能质量指标兼容性收集和分析方法和过程的建议
2010 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America (T&D-LA) Pub Date : 2010-11-01 DOI: 10.1109/TDC-LA.2010.5762903
R. Torrezan, S. U. Ahn, C. Escobar, A. S. Gaona, A. V. de Oliveira, A. N. de Souza, A. Martins, N. Jesus
{"title":"Proposals for improvement of methodology and process of collecting and analyzing compatibility of power quality indicators in distribution systems","authors":"R. Torrezan, S. U. Ahn, C. Escobar, A. S. Gaona, A. V. de Oliveira, A. N. de Souza, A. Martins, N. Jesus","doi":"10.1109/TDC-LA.2010.5762903","DOIUrl":"https://doi.org/10.1109/TDC-LA.2010.5762903","url":null,"abstract":"This article aims to present proposals for improvement of key standards and resolutions concerned about the methodology for calculating the indicator of total harmonic voltage distortion, and should contribute to the process of examining the compatibility of potentially disturbing loads in electric power quality in distribution systems. These proposals were drawn from the analysis of results from measurement campaigns conducted in a case study including analysis of the connection of a new induction furnace in a foundry served by a distributor of São Paulo state. A general historical situating the quality of electric energy in the electricity sector is presented, and methodological guidelines and procedures used in experimental trials are shown. The analysis and discussion of results are prepared to answer the main questions that arise during the implementation of standards, resolutions and procedures.","PeriodicalId":222318,"journal":{"name":"2010 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America (T&D-LA)","volume":"228 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115747997","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
Influence of electrogeometric model and statistical current distribution in distribution lines indirect lightning performance estimation considering the ground resistivity 考虑地电阻率的配电线路电几何模型和统计电流分布对间接防雷性能估计的影响
2010 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America (T&D-LA) Pub Date : 2010-11-01 DOI: 10.1109/TDC-LA.2010.5762922
R. P. Souza, I. Lopes, J. Paulino
{"title":"Influence of electrogeometric model and statistical current distribution in distribution lines indirect lightning performance estimation considering the ground resistivity","authors":"R. P. Souza, I. Lopes, J. Paulino","doi":"10.1109/TDC-LA.2010.5762922","DOIUrl":"https://doi.org/10.1109/TDC-LA.2010.5762922","url":null,"abstract":"The estimation of overhead distribution lines lightning performance is very important for insulation design. Due to the random nature of lightning, different aspects of the phenomenon, such as the discharge points of incidence and the statistical distribution of the current intensity, are modeled in performance evaluation studies. This paper presents a comparative study of different models proposed in the literature to estimate the indirect lightning flashover rates of overhead distribution lines. The electrogeometric model, that defines the lightning striking point, and the statistical current distribution are evaluated using Monte Carlo simulations. The results show the importance of considering the most accurate information on these parameters for a more realistic performance estimation.","PeriodicalId":222318,"journal":{"name":"2010 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America (T&D-LA)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124389029","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
Reactive power support pricing of Distributed Generators with primary energy source uncertainty 具有一次能源不确定性的分布式发电机组无功支持定价
2010 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America (T&D-LA) Pub Date : 2010-11-01 DOI: 10.1109/TDC-LA.2010.5762868
A. C. Rueda-Medina, J. A. Domínguez-Navarro, A. Padilha-Feltrin
{"title":"Reactive power support pricing of Distributed Generators with primary energy source uncertainty","authors":"A. C. Rueda-Medina, J. A. Domínguez-Navarro, A. Padilha-Feltrin","doi":"10.1109/TDC-LA.2010.5762868","DOIUrl":"https://doi.org/10.1109/TDC-LA.2010.5762868","url":null,"abstract":"In this paper, a novel methodology to price the reactive power support ancillary service of Distributed Generators (DGs) with primary energy source uncertainty is shown. The proposed methodology provides the service pricing based on the Loss of Opportunity Costs (LOC) calculation. An algorithm is proposed to reduce the uncertainty present in these generators using Multiobjective Power Flows (MOPFs) implemented in multiple probabilistic scenarios through Monte Carlo Simulations (MCS), and modeling the time series associated with the generation of active power from DGs through Markov Chains (MC).","PeriodicalId":222318,"journal":{"name":"2010 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America (T&D-LA)","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123596864","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
Decentralized robust control for FACTS using hankel reduced order models 基于hankel降阶模型的FACTS分散鲁棒控制
2010 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America (T&D-LA) Pub Date : 2010-11-01 DOI: 10.1109/TDC-LA.2010.5762871
D. Ceron, M. Rios
{"title":"Decentralized robust control for FACTS using hankel reduced order models","authors":"D. Ceron, M. Rios","doi":"10.1109/TDC-LA.2010.5762871","DOIUrl":"https://doi.org/10.1109/TDC-LA.2010.5762871","url":null,"abstract":"This paper presents a decentralized robust control scheme for two types of FACTS devices: SVC and TCSC, to enhance the voltage and angular stability in a power system. The robust control scheme is based on reduced order models, which are computed using the Hankel reduction theory. After that, computation of decentralized robust controls is proposed and tested in a two-area 68 nodes system.","PeriodicalId":222318,"journal":{"name":"2010 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America (T&D-LA)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129771180","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
Study of voltage unbalance conditions based on the behavior of the complex voltage unbalance factor (CVUF) 基于复杂电压不平衡因子(CVUF)行为的电压不平衡工况研究
2010 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America (T&D-LA) Pub Date : 2010-11-01 DOI: 10.1109/TDC-LA.2010.5762880
A. L. F. Ferreira Filho, D. C. Garcia, F. A. O. Nascimento, J. Cormane
{"title":"Study of voltage unbalance conditions based on the behavior of the complex voltage unbalance factor (CVUF)","authors":"A. L. F. Ferreira Filho, D. C. Garcia, F. A. O. Nascimento, J. Cormane","doi":"10.1109/TDC-LA.2010.5762880","DOIUrl":"https://doi.org/10.1109/TDC-LA.2010.5762880","url":null,"abstract":"In this paper, an analysis of the complex voltage unbalance factor (CVUF) in three-phase lines is offered, in order to orientate future experiments in the study of the effects of voltage unbalance. The geometrical loci for constant magnitudes of the CVUF are presented, considering that the angles of the voltages are constant, and considering that the magnitudes of the voltages are constant. Furthermore, a correlation coefficient study is made between the CVUF and the negative- and positive-sequence voltage components (V2 and V1, respectively). The intention here is to determine the influence of the voltage components sequences on the magnitude and angle of the CVUF. Based on the studies described above, a series of unbalanced voltage conditions is suggested, serving as orientation for future laboratory experiments, which could lead to a better understanding of the relation between the voltage unbalance condition and its effects.","PeriodicalId":222318,"journal":{"name":"2010 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America (T&D-LA)","volume":"162 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134296397","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
Analysis of the operation of a D-STATCOM in unbalanced distribution systems under voltage disturbances 电压扰动下不平衡配电系统中D-STATCOM的运行分析
2010 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America (T&D-LA) Pub Date : 2010-11-01 DOI: 10.1109/TDC-LA.2010.5762948
Gabriel R. F. Q. Mafra, W. Uturbey, B. C. Cardoso Filho
{"title":"Analysis of the operation of a D-STATCOM in unbalanced distribution systems under voltage disturbances","authors":"Gabriel R. F. Q. Mafra, W. Uturbey, B. C. Cardoso Filho","doi":"10.1109/TDC-LA.2010.5762948","DOIUrl":"https://doi.org/10.1109/TDC-LA.2010.5762948","url":null,"abstract":"In this paper, a study on the operation of a static synchronous compensator for distribution systems, D-STATCOM, in relation to its performance in the presence of events that can affect system's power quality, is presented. Performance under short-circuit and load variation is assessed. The IEEE 13 node test feeder, which is a highly loaded unbalanced system, is used in the study. The D-STATCOM consists mainly of a three-level inverter with IGBTs and PWM control. Modeling and simulations are implemented in Matlab/Simulink.","PeriodicalId":222318,"journal":{"name":"2010 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America (T&D-LA)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133284663","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: 11
Performance analysis of auto-transformer ADZ through the software ATP 利用ATP软件对自耦变压器ADZ进行性能分析
2010 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America (T&D-LA) Pub Date : 2010-11-01 DOI: 10.1109/TDC-LA.2010.5762931
A. Pereira, F. Belchior, J. D. de Abreu
{"title":"Performance analysis of auto-transformer ADZ through the software ATP","authors":"A. Pereira, F. Belchior, J. D. de Abreu","doi":"10.1109/TDC-LA.2010.5762931","DOIUrl":"https://doi.org/10.1109/TDC-LA.2010.5762931","url":null,"abstract":"This paper aims to model, using the software ATP (Alternative Transient Program), and investigate the use of zigzag autotransformer (ADZ), with control of voltage module and phase shift made independently, as a filter for harmonic currents, specifically in 24-pulse converters. Objective is to preserve the quality of supply in terms of the harmonic distortion. Furthermore, the systematic focus here reduces the financial cost involved based on the use of conventional transformers. Common situations in the electrical system, featuring loss of power quality, were selected for the performance study of 24-pulse rectifier with special transformer ADZ","PeriodicalId":222318,"journal":{"name":"2010 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America (T&D-LA)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132236824","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
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