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

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Excess reverse current modeling of single junction Si solar cells and transistor n+pn+ structure effect 单结硅太阳能电池和晶体管n+pn+结构效应的过量反向电流建模
2010 9th International Conference on Environment and Electrical Engineering Pub Date : 2010-05-16 DOI: 10.1109/EEEIC.2010.5490002
R. Macků, P. Koktavy
{"title":"Excess reverse current modeling of single junction Si solar cells and transistor n+pn+ structure effect","authors":"R. Macků, P. Koktavy","doi":"10.1109/EEEIC.2010.5490002","DOIUrl":"https://doi.org/10.1109/EEEIC.2010.5490002","url":null,"abstract":"In this paper a mechanisms affecting excess reverse currents of silicon single-crystalline solar cells was investigated. In principle, significant reverse currents pertinent to solar cells local and/or global imperfections indicate worse reliability. We carried out experiments of U-I curve measurements of local defect-free samples at different temperatures. Two equivalent circuit models for relatively low and high reverse current range were put forward. The former model indicates initial influence of saturation current and leakage current with resistive character. But, the later model deals with parasitic pn junction near the back contact electrode of solar cell. It turns out that, not fully suppressed junction creates in solar cell n+pn+ transistor structure and samples behaviour is affected significantly. Least but not least, the full model validity is verified by means of U-I curve approximation of some different samples.","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":"122041420","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
Pitch control of wind turbine blades in noisy and unstable wind conditions 噪声和不稳定风力条件下风力机叶片桨距控制
2010 9th International Conference on Environment and Electrical Engineering Pub Date : 2010-05-16 DOI: 10.1109/EEEIC.2010.5490004
M. Faridi, R. Ansari, S. Mousavi, Mahsa Dodman
{"title":"Pitch control of wind turbine blades in noisy and unstable wind conditions","authors":"M. Faridi, R. Ansari, S. Mousavi, Mahsa Dodman","doi":"10.1109/EEEIC.2010.5490004","DOIUrl":"https://doi.org/10.1109/EEEIC.2010.5490004","url":null,"abstract":"In this paper, a new approach for control of the pitch angle of the wind turbine is represented in an unstable and noisy circumstance. Moreover, it is demonstrated that output power of the wind turbine can be efficiently controlled by the proposed control system. This method enhances (amends) the stability of the wind turbine. Besides, it improves the regulation of the output power. Also, a comparative study of the proposed control system with a constant pitch angle wind turbines is depicted. For modeling, real data of the wind turbine, model V74 Vestats, and noisy wind model of Manjil area is used.","PeriodicalId":197298,"journal":{"name":"2010 9th International Conference on Environment and Electrical Engineering","volume":"20 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":"123598231","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
A fast method for fault section identification in series compensated transmission lines 串联补偿输电线路故障段快速识别方法
2010 9th International Conference on Environment and Electrical Engineering Pub Date : 2010-05-16 DOI: 10.1109/EEEIC.2010.5490038
M. Baradar, S. Afsharnia, M. Sanaye-Pasand
{"title":"A fast method for fault section identification in series compensated transmission lines","authors":"M. Baradar, S. Afsharnia, M. Sanaye-Pasand","doi":"10.1109/EEEIC.2010.5490038","DOIUrl":"https://doi.org/10.1109/EEEIC.2010.5490038","url":null,"abstract":"In this paper, a novel and fast method for fault section identification in compensated series transmission lines based on the high frequency traveling wave has been proposed. The method uses the relation of magnitude and polarity between wavefronts of high frequency travelling waves induced by fault. For accurately and fast extracting polarity and magnitude of travelling wave, wavelet transform and modulus maxima are used. Validation of this method is carried out by PSCAD/EMTP and MATLAB simulations for typical 400 kV power system faults. Simulation results reveal high performance of the 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":"131502306","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
The energy meters allocation in electric systems on the basis of observability theory 基于可观测性理论的电力系统电能表配置
2010 9th International Conference on Environment and Electrical Engineering Pub Date : 2010-05-16 DOI: 10.1109/EEEIC.2010.5489950
A. Pazderin, A. Egorov, S. Eroshenko
{"title":"The energy meters allocation in electric systems on the basis of observability theory","authors":"A. Pazderin, A. Egorov, S. Eroshenko","doi":"10.1109/EEEIC.2010.5489950","DOIUrl":"https://doi.org/10.1109/EEEIC.2010.5489950","url":null,"abstract":"The allocation of electrical energy meters in power systems is given a careful consideration. Observability is understood as the ability of electrical energy distribution calculation based on existing measurements. The problem definition is given in terms of the application of the state estimation theory. State equations for energy distribution problem differ from the similar ones for power distribution problem. Therefore, these problems have different criteria of observability. Numerical characteristics of the observability degree of electrical energy flows as well as recommendations for system accounting redundancy increase are given.","PeriodicalId":197298,"journal":{"name":"2010 9th International Conference on Environment and Electrical Engineering","volume":"44 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":"131308347","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: 13
Genetic algorithm applied in a geoelectrical prospecting method 遗传算法在地电找矿中的应用
2010 9th International Conference on Environment and Electrical Engineering Pub Date : 2010-05-16 DOI: 10.1109/EEEIC.2010.5489927
W. Calixto, Luciano Martins Neto, Marcel Wu, K. Yamanaka, Hipólito Barbosa Machado Filho
{"title":"Genetic algorithm applied in a geoelectrical prospecting method","authors":"W. Calixto, Luciano Martins Neto, Marcel Wu, K. Yamanaka, Hipólito Barbosa Machado Filho","doi":"10.1109/EEEIC.2010.5489927","DOIUrl":"https://doi.org/10.1109/EEEIC.2010.5489927","url":null,"abstract":"This work presents an optimization methodology using a Genetic Algorithm, to obtain the parameters of a soil that can be represented in a multi layer structure. The method uses a curve of experimental apparent resistivity obtained from measurements made in the soil. This experimental curve is compared with another curve of theoretical apparent resistivity of the soil, produced by the genetic algorithm. The main difference of this method regarding the already developed methods, is just that, besides optimizing the resistivities ρi and the thicknesses hi of each layer, the proposed method also optimizes the layers N quantity, seeking the best soil stratification. The obtained results of this work are compared with others soil stratification methods.","PeriodicalId":197298,"journal":{"name":"2010 9th International Conference on Environment and Electrical Engineering","volume":"37 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":"125672989","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
Impact of SVC and STATCOM on power system including a wind farm SVC和STATCOM对包括风电场在内的电力系统的影响
2010 9th International Conference on Environment and Electrical Engineering Pub Date : 2010-05-16 DOI: 10.1109/EEEIC.2010.5489984
A. Daneshi, Nima Sadr Momtazi, H. Daneshi, J. Javan
{"title":"Impact of SVC and STATCOM on power system including a wind farm","authors":"A. Daneshi, Nima Sadr Momtazi, H. Daneshi, J. Javan","doi":"10.1109/EEEIC.2010.5489984","DOIUrl":"https://doi.org/10.1109/EEEIC.2010.5489984","url":null,"abstract":"Global concerns regarding climate change and sustainability have led to a recent worldwide push towards electricity derived from renewable and sustainable resources. Among all renewable resources, wind energy is one of the fastest growing worldwide, facing power system with new obstacles including transmission congestion. To mitigate transmission congestion and utilize current transmission system optimally, the restructured network with compensators is proposed as an alternative solution. Compensators are usually used to compensate active and reactive power and keep the stability of system on desired level. In this paper, we study the impact of FACTS devices like STATCOM and SVC on voltage profile, loading parameter and stability of a network integrated with wind resources.","PeriodicalId":197298,"journal":{"name":"2010 9th International Conference on Environment and Electrical Engineering","volume":"61 9 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":"130597129","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
The problems of electrical distance in connection with the operation of wind power generator 与风力发电机运行有关的电气距离问题
2010 9th International Conference on Environment and Electrical Engineering Pub Date : 2010-05-16 DOI: 10.1109/EEEIC.2010.5490014
S. Rusek, František Střida, M. Mach
{"title":"The problems of electrical distance in connection with the operation of wind power generator","authors":"S. Rusek, František Střida, M. Mach","doi":"10.1109/EEEIC.2010.5490014","DOIUrl":"https://doi.org/10.1109/EEEIC.2010.5490014","url":null,"abstract":"Renewable sources of electrical energy (especially the wind power generators), which have been lately promoted, are causing problems in distribution and transmission operation networks. Variable supply (or load) of electrical energy cause voltage fluctuations in the distribution networks, changes in short-circuit ratio, and also affect active losses in the network at the expense of distribution companies. Alternative generators of electricity influence the distribution networks not only by their output power, but also by their electrical distance from the supply network, i.e. mostly from the distributing point of the superior system. The issue of electrical distance is currently seen only in relation with the short-circuit effect (short-circuit contribution of individual generators). The presented paper correlates the electrical distance of the connection point of wind power generators in the distribution network of medium voltage (22kV) from the 110kV power supply node and the voltage effect on the distribution network and the 110kV power network.","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":"115063189","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
Optimal location and setting of TCSC under single line contingency using Mixed Integer Nonlinear Programming 基于混合整数非线性规划的单线偶然性下TCSC的最优定位与设置
2010 9th International Conference on Environment and Electrical Engineering Pub Date : 2010-05-16 DOI: 10.1109/EEEIC.2010.5489985
R. Etemad, R. Navabi, H. Shayanfar
{"title":"Optimal location and setting of TCSC under single line contingency using Mixed Integer Nonlinear Programming","authors":"R. Etemad, R. Navabi, H. Shayanfar","doi":"10.1109/EEEIC.2010.5489985","DOIUrl":"https://doi.org/10.1109/EEEIC.2010.5489985","url":null,"abstract":"This paper present a novel approach to determine optimal location, number and parameter setting of Thyristor Controlled Series Capacitor (TCSC) under single line contingency (N-1 contingency). Mixed Integer Nonlinear Programming (MINLP) based on Line Flow Based (LFB) equations is being used for this purpose as a fast and robust approach. Contingency analysis is performed to detect and rank the severest one-line fault contingency in a power system. The optimization objective function is consists of line overloads alleviation and bus voltage magnitudes enhancement. To validate the effectiveness of proposed approach, simulations are carried out on IEEE 9 bus system. The obtained results show that TCSC is very effective device in security enhancement under single line contingency, considering its smooth and rapid reactance change according to system requirements.","PeriodicalId":197298,"journal":{"name":"2010 9th International Conference on Environment and Electrical Engineering","volume":"14 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":"115010512","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: 13
Overvoltage and overcurrent in a capacity circuit generated by a vacuum switch 真空开关产生的容量电路中的过电压和过流
2010 9th International Conference on Environment and Electrical Engineering Pub Date : 2010-05-16 DOI: 10.1109/EEEIC.2010.5489980
Z. Wróblewski, J. Budzisz
{"title":"Overvoltage and overcurrent in a capacity circuit generated by a vacuum switch","authors":"Z. Wróblewski, J. Budzisz","doi":"10.1109/EEEIC.2010.5489980","DOIUrl":"https://doi.org/10.1109/EEEIC.2010.5489980","url":null,"abstract":"This paper presents the result of studies about overvoltage and overcurrent in a capacity circuit generated by a vacuum switch. All study was done in simulation in EMTP/ATP program. A model was built for simulating switching operations, disable capacitor bank with and without reignition of vacuum arc.","PeriodicalId":197298,"journal":{"name":"2010 9th International Conference on Environment and Electrical Engineering","volume":"64 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":"132981826","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
A new scheme to control SSSC in interconnected power systems 互联电力系统中SSSC控制的新方案
2010 9th International Conference on Environment and Electrical Engineering Pub Date : 2010-05-16 DOI: 10.1109/EEEIC.2010.5489972
G. Zareiegovar, H. Shayeghi, A. Sakhavati, V. Nabaei
{"title":"A new scheme to control SSSC in interconnected power systems","authors":"G. Zareiegovar, H. Shayeghi, A. Sakhavati, V. Nabaei","doi":"10.1109/EEEIC.2010.5489972","DOIUrl":"https://doi.org/10.1109/EEEIC.2010.5489972","url":null,"abstract":"In this paper, a new scheme to control an Static Synchronous Series Compensator (SSSC) installed in a two-area power system is proposed. The power system is equipped with the SSSC to improve Load-Frequency Control (LFC). In the proposed scheme, SSSC is able to compensate for load changes in both areas on both sides of SSSC. Objective functions of designing parameters are based on Integral of Time multiplied by Absolute value of the Error (ITAE). Parameters of conventional integral controllers and active power controller of SSSC are designed using defined optimization problems. To solve the optimization problems, PSO algorithm is used. Simulation results of the two-area power system equipped with SSSC and without SSSC are compared.","PeriodicalId":197298,"journal":{"name":"2010 9th International Conference on Environment and Electrical Engineering","volume":"483 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":"132007092","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
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