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Transmission line impedance estimation based on PMU measurements 基于PMU测量的传输线阻抗估计
Eurocon 2013 Pub Date : 2013-07-01 DOI: 10.1109/EUROCON.2013.6625167
R. Matica, V. Kirincic, S. Skok, A. Marusic
{"title":"Transmission line impedance estimation based on PMU measurements","authors":"R. Matica, V. Kirincic, S. Skok, A. Marusic","doi":"10.1109/EUROCON.2013.6625167","DOIUrl":"https://doi.org/10.1109/EUROCON.2013.6625167","url":null,"abstract":"State estimation is one of the most important network management functions, responsible for determining the actual state of the power network based on the network model, available telemetry (analog measurements and digital device statuses) and pseudo measurements. Phasor measurement units (PMUs) provide valuable instantaneous information regarding power system stability and security, and thus have the potential to improve the reliability of the state estimator. Also, measured synchrophasors can be used for transmission line impedance estimation, which results in more accurate power system state estimation, in comparison with the traditional approach that uses catalogue values of the transmission line impedance.","PeriodicalId":136720,"journal":{"name":"Eurocon 2013","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129969494","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
On the use of simplified reactive power flow equations for purposes of fast reliability assessment 简化无功潮流方程用于快速可靠性评估的研究
Eurocon 2013 Pub Date : 2013-07-01 DOI: 10.1109/EUROCON.2013.6625102
M. Giuntoli, P. Pelacchi, D. Poli
{"title":"On the use of simplified reactive power flow equations for purposes of fast reliability assessment","authors":"M. Giuntoli, P. Pelacchi, D. Poli","doi":"10.1109/EUROCON.2013.6625102","DOIUrl":"https://doi.org/10.1109/EUROCON.2013.6625102","url":null,"abstract":"In the present paper, a new method, derived from the linearization of the reactive power flow equations, is presented and discussed. The proposed technique is able to quickly calculate voltages at load busses, as well as reactive power injections at generation busses, using the results of a preliminary ordinary DC load flow. Due to the extremely reduced computational time, this technique can be successfully used for fast reliability assessments, when a huge number of load flow scenarios, generated by a probabilistic approach like Monte Carlo techniques, must be analyzed in terms of voltage violations; the algorithm is also promising for Optimal Reactive Power Flow procedures. Two case studies, based on the IEEE RTS-96 and Poland transmission and sub-transmission network, confirm a speed-up of more than 6 times respect to the Newton-Raphson algorithm, while keeping the mean squared error of voltages within 0.5% and the maximum voltage error below 1.5% of the voltage limits.","PeriodicalId":136720,"journal":{"name":"Eurocon 2013","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131336174","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
A novel implementation of MPPT sliding mode controller for PV generation systems 光伏发电系统中MPPT滑模控制器的一种新实现
Eurocon 2013 Pub Date : 2013-07-01 DOI: 10.1109/EUROCON.2013.6625073
H. Afghoul, D. Chikouche, F. Krim, A. Beddar
{"title":"A novel implementation of MPPT sliding mode controller for PV generation systems","authors":"H. Afghoul, D. Chikouche, F. Krim, A. Beddar","doi":"10.1109/EUROCON.2013.6625073","DOIUrl":"https://doi.org/10.1109/EUROCON.2013.6625073","url":null,"abstract":"This paper presents a simulation of PV system (PV panel, boost inverter and a resistance load) using M-file of MATLAB, To prove the efficiency of this system we applied two method of MPPT in the global algorithm, one classical and the other one is intelligent: the first one is called Perturbation and observation (P&O) used in stand-alone places or in simple installation and the later is based on sliding mode, this method is used when we need a large installation. The different steps of the design of these controllers are presented together with its simulation. The performance comparison between sliding mode controller and P&O controller has been carried out to demonstrate the effectiveness of sliding mode controller to draw much energy and a fast response against change in working conditions. In this paper the understanding and the good modeling of any system allowed us to create an algorithm which is applied in any programming software in our case M-file of MATLAB, the use of M-file presents many advantages like a short time of simulation.","PeriodicalId":136720,"journal":{"name":"Eurocon 2013","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126658057","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
High gain DC-DC converter applied to photovoltaic system with new proposed to MPPT search 应用于光伏系统的高增益DC-DC变换器，提出了一种新的MPPT搜索方法
Eurocon 2013 Pub Date : 2013-07-01 DOI: 10.1109/EUROCON.2013.6625115
A. Freitas, F. Antunes, E. M. Sá, A. Lima, S. Daher, S. Ximenes
{"title":"High gain DC-DC converter applied to photovoltaic system with new proposed to MPPT search","authors":"A. Freitas, F. Antunes, E. M. Sá, A. Lima, S. Daher, S. Ximenes","doi":"10.1109/EUROCON.2013.6625115","DOIUrl":"https://doi.org/10.1109/EUROCON.2013.6625115","url":null,"abstract":"This paper presents the development of a high gain Boost converter applied to photovoltaic (PV) system. This converter raises its input voltage and injects its output current at a constant 311 Vdc bus, using the maximum power point tracking (MPPT). The new proposal seeks the MPPT is to connect each module a converter for a high gain greater accuracy in finding the point of maximum power. The converter will work with input voltage of 17.4 Vdc, output voltage of 311 Vdc and power of 100 W.","PeriodicalId":136720,"journal":{"name":"Eurocon 2013","volume":"804 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126732645","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
Formation of load pattern clusters exploiting ant colony clustering principles 利用蚁群聚类原理形成负载模式簇
Eurocon 2013 Pub Date : 2013-07-01 DOI: 10.1109/EUROCON.2013.6625170
G. Chicco, Octavian-Marcel Ionel, R. Porumb
{"title":"Formation of load pattern clusters exploiting ant colony clustering principles","authors":"G. Chicco, Octavian-Marcel Ionel, R. Porumb","doi":"10.1109/EUROCON.2013.6625170","DOIUrl":"https://doi.org/10.1109/EUROCON.2013.6625170","url":null,"abstract":"Electrical load pattern clustering provides useful information on how to partition the customers on the basis of the shape of their actual consumption. The results of the clustering procedure are then used to group the customers into classes by identifying a suitable set of attributes describing each class in a non-overlapping way. Starting from an initial set of centroids, it is possible to construct a clustering algorithm to upgrade the clustering results by refining the initial centroids. The Electrical Pattern Ant Colony Clustering (EPACC) method recently introduced by the authors, based on ant colony clustering principles, has been shown to outperform the classical k-means for electrical load pattern clustering based on an initial centroid model. This paper illustrates the genesis of the EPACC algorithm by providing additional information on how the method parameters have been chosen and set up. Examples are taken from a case study application with actual load patterns.","PeriodicalId":136720,"journal":{"name":"Eurocon 2013","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121559770","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: 17
Optimal connection of geothermal power plant Velika Ciglena to distribution network Velika Ciglena地热发电厂与配电网的优化连接
Eurocon 2013 Pub Date : 2013-07-01 DOI: 10.1109/EUROCON.2013.6625139
J. Popovic, Z. Popovic
{"title":"Optimal connection of geothermal power plant Velika Ciglena to distribution network","authors":"J. Popovic, Z. Popovic","doi":"10.1109/EUROCON.2013.6625139","DOIUrl":"https://doi.org/10.1109/EUROCON.2013.6625139","url":null,"abstract":"This paper describes the analysis procedures in order to find the best technical solution for connecting geothermal power plant in the medium-voltage distribution power network. Medium-voltage electricity distribution network has two voltage levels. These are 10 kV and 35 kV voltage levels. Connection of the new distributed energy source to the surrounding 10 kV distribution network is not optimal, because there is not enough demand for total generated electricity. Also, distribution to distant consumers has no justification. Geothermal power plant could be successfully connected to the medium distribution power network by construction of new medium-voltage cables. Results of analysis and calculations showed that connection to 10 kV electricity distribution network is not a good choice, because it does not provide a reliable, safe and efficient supply of produced electricity. On the other side, connection with two 35 kV cables to the adjacent 35/10 kV substations turned out to be the best and optimal solution for geothermal power plant connection.","PeriodicalId":136720,"journal":{"name":"Eurocon 2013","volume":"87 21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126301251","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
L3B: Low level load balancer in the cloud L3B:云中的低级负载平衡器
Eurocon 2013 Pub Date : 2013-07-01 DOI: 10.1109/EUROCON.2013.6624994
M. Simjanoska, S. Ristov, Goran Velkoski, M. Gusev
{"title":"L3B: Low level load balancer in the cloud","authors":"M. Simjanoska, S. Ristov, Goran Velkoski, M. Gusev","doi":"10.1109/EUROCON.2013.6624994","DOIUrl":"https://doi.org/10.1109/EUROCON.2013.6624994","url":null,"abstract":"Cloud service providers (CSPs) aim to preserve infinite scalable and elastic computing resources. In addition, user requirements for flexible cloud computing resources impact the overall performance of the cloud. From the other side, virtualization adds additional layer in cloud stack and therefore decreases the service performance compared to on-premise traditional hosting. It seems that the price to pay for scalability and flexibility is not so small. Therefore, in order to improve the overall cloud performance and make it sustainable there is need for real-time resource orchestration. Considering the heterogeneous architecture of the cloud, CSPs must develop appropriate strategy to achieve maximum performance minimizing the utilization of hardware resources and energy consumption. In this paper, we propose a novel Low Level Load balancing (L3B) approach applied to Infrastructure as a Service (IaaS). Our approach preserves the cloud's elasticity by dynamic activation of cloud resources and load balancing the traffic over the resources on low network level. In addition, our L3B balancer tends to load the instances in the region where they provide maximum performance. Introducing L3B improves the overall cloud performance, reduces power consumption and customers' cost for renting cloud resources, etc.","PeriodicalId":136720,"journal":{"name":"Eurocon 2013","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125740313","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
Wireless sensor networks for environmental research: A survey on limitations and challenges 用于环境研究的无线传感器网络:局限与挑战的调查
Eurocon 2013 Pub Date : 2013-07-01 DOI: 10.1109/EUROCON.2013.6624996
Antonio de la Piedra, Francisco Benitez-Capistros, Federico Domínguez, A. Touhafi
{"title":"Wireless sensor networks for environmental research: A survey on limitations and challenges","authors":"Antonio de la Piedra, Francisco Benitez-Capistros, Federico Domínguez, A. Touhafi","doi":"10.1109/EUROCON.2013.6624996","DOIUrl":"https://doi.org/10.1109/EUROCON.2013.6624996","url":null,"abstract":"Wireless Sensor Networks (WSNs) have permeated the entire fabric of academic disciplines that greatly rely on control and decision-making processes such as medical health care, agriculture, ecology and industrial automation. In ecology, an infrastructure consisting of networks of interconnected sensors can provide in-situ high-precision monitoring of natural phenomena at a large-scale. Moreover, WSNs provide a number of advantages to ecoinformatics such as the possibility of constructing quality datasets that coupled to machine learning-based prediction systems, can be used for ecological and process modelling. In this manuscript, we present a survey on recent WSNs based on several fields related to environmental research e.g. ecoinformatics, precision agriculture and wildlife observation. Finally, we have focused on the identification of limitations and open problems therein.","PeriodicalId":136720,"journal":{"name":"Eurocon 2013","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126054553","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: 51
Analysis of test circuits for measuring impulse grounding resistance 冲击接地电阻测试电路分析
Eurocon 2013 Pub Date : 2013-07-01 DOI: 10.1109/EUROCON.2013.6625061
Z. Bajramovic, M. Veledar, O. Hadzic, A. Carsimamovic
{"title":"Analysis of test circuits for measuring impulse grounding resistance","authors":"Z. Bajramovic, M. Veledar, O. Hadzic, A. Carsimamovic","doi":"10.1109/EUROCON.2013.6625061","DOIUrl":"https://doi.org/10.1109/EUROCON.2013.6625061","url":null,"abstract":"The Paper comprises research about influential parameters on test circuits which are used for exploring impulse grounding characteristics. On the basis of conducted experimental research on horizontal grounding, using atmospheric discharge currents, amplitudes of 2.5 kA and 2.3 kA, front time of 4 μs, obtained the impulse characteristics of these grounding electrodes length 10 and 20 m, respectively. For specific test circuit a computer model was formed and it was based on the well known ATP-EMTP which gave a good comparison of the results. Using this approach computational studies of influential components of concentrated grounding test circuits were performed.","PeriodicalId":136720,"journal":{"name":"Eurocon 2013","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116199577","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
Extending the classification scheme of personalization constraints in digital business environments 扩展数字化商业环境中个性化约束的分类方案
Eurocon 2013 Pub Date : 2013-07-01 DOI: 10.1109/EUROCON.2013.6624958
Michael J. Harnisch
{"title":"Extending the classification scheme of personalization constraints in digital business environments","authors":"Michael J. Harnisch","doi":"10.1109/EUROCON.2013.6624958","DOIUrl":"https://doi.org/10.1109/EUROCON.2013.6624958","url":null,"abstract":"Corporations which operate in digital business environments often implement personalization activities to gain a competitive advantage and raise the buying intentions of their customers. Personalized marketing messages based on individual preferences and needs of customers are the key to success. But companies also need to manage constraints of personalization activities. This contribution focuses on the extension of a classification scheme of personalization constraints by applying a multi case study approach. The classification scheme provides insights into various limitations which need to be handled by companies that aim on the successful implementation of personalization activities.","PeriodicalId":136720,"journal":{"name":"Eurocon 2013","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124952481","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
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