Pub Date : 2014-10-23DOI: 10.1109/UPEC.2014.6934609
E. Zanaj, Ermal Elbasani, Mirjeta Alinci, Ezmerina Kotobelli, B. Zanaj
Recent researches on the usage of technology in different area of life activities have made WSN widely useful in monitoring different environments. Different monitoring tasks are being used in WSN and for that; in order to acquire the best performance is needed to focus in an essential parameter that is the node localization. This paper studies the localization issue based on three existing algorithms, and gives insights of a new algorithm for sensor localization. This new algorithm is based on the advantages of other three existing algorithms, knowledge this gained from the simulations results. Our proposed algorithm aims to improve the network convergence, energy saving, and scalability for the WSN.
{"title":"Application of the localization algorithms in WSN","authors":"E. Zanaj, Ermal Elbasani, Mirjeta Alinci, Ezmerina Kotobelli, B. Zanaj","doi":"10.1109/UPEC.2014.6934609","DOIUrl":"https://doi.org/10.1109/UPEC.2014.6934609","url":null,"abstract":"Recent researches on the usage of technology in different area of life activities have made WSN widely useful in monitoring different environments. Different monitoring tasks are being used in WSN and for that; in order to acquire the best performance is needed to focus in an essential parameter that is the node localization. This paper studies the localization issue based on three existing algorithms, and gives insights of a new algorithm for sensor localization. This new algorithm is based on the advantages of other three existing algorithms, knowledge this gained from the simulations results. Our proposed algorithm aims to improve the network convergence, energy saving, and scalability for the WSN.","PeriodicalId":414838,"journal":{"name":"2014 49th International Universities Power Engineering Conference (UPEC)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130718836","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}
Pub Date : 2014-10-23DOI: 10.1109/UPEC.2014.6934746
S. I. Vagropoulos, C. K. Simoglou, A. Bakirtzis, E.J. Thalassinakis, A. Gigantidou
This paper examines the impact that the installation of battery energy storage systems (BESSs) has on the daily scheduling and operation of the insular power system of Crete. An optimization model for the integration of BESS in the day-ahead unit commitment problem of isolated power systems is developed and annual simulations are carried out for BESSs of different dimensioning regarding power, capacity and efficiency. Simulation results for load leveling and reserve provision from BESS are presented and thoroughly discussed.
{"title":"Assessment of the impact of a battery energy storage system on the scheduling and operation of the insular power system of Crete","authors":"S. I. Vagropoulos, C. K. Simoglou, A. Bakirtzis, E.J. Thalassinakis, A. Gigantidou","doi":"10.1109/UPEC.2014.6934746","DOIUrl":"https://doi.org/10.1109/UPEC.2014.6934746","url":null,"abstract":"This paper examines the impact that the installation of battery energy storage systems (BESSs) has on the daily scheduling and operation of the insular power system of Crete. An optimization model for the integration of BESS in the day-ahead unit commitment problem of isolated power systems is developed and annual simulations are carried out for BESSs of different dimensioning regarding power, capacity and efficiency. Simulation results for load leveling and reserve provision from BESS are presented and thoroughly discussed.","PeriodicalId":414838,"journal":{"name":"2014 49th International Universities Power Engineering Conference (UPEC)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133909013","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}
Pub Date : 2014-10-23DOI: 10.1109/UPEC.2014.6934777
P. Teodosescu, Sorin-Traian Negrea, M. Bojan, R. Marschalko
The paper analyzes the positive effects on a small local grid, obtained by the use of an electronic lighting device with high power factor. Although having a high power factor, the input current of the device is not a perfect sinusoidal waveform, which will not represent a negative aspect, but will have a positive effect on the local grid by obtaining, at a point of common coupling, a higher overall power factor and lower harmonic distortions. The results are compared with those of a perfect sinusoidal input current device, at the same rated power, obtained with an incandescent lamp.
{"title":"Local grid power quality improvements by the use of a high power factor LED device","authors":"P. Teodosescu, Sorin-Traian Negrea, M. Bojan, R. Marschalko","doi":"10.1109/UPEC.2014.6934777","DOIUrl":"https://doi.org/10.1109/UPEC.2014.6934777","url":null,"abstract":"The paper analyzes the positive effects on a small local grid, obtained by the use of an electronic lighting device with high power factor. Although having a high power factor, the input current of the device is not a perfect sinusoidal waveform, which will not represent a negative aspect, but will have a positive effect on the local grid by obtaining, at a point of common coupling, a higher overall power factor and lower harmonic distortions. The results are compared with those of a perfect sinusoidal input current device, at the same rated power, obtained with an incandescent lamp.","PeriodicalId":414838,"journal":{"name":"2014 49th International Universities Power Engineering Conference (UPEC)","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134432868","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}
Pub Date : 2014-10-23DOI: 10.1109/UPEC.2014.6934691
D. Klavsuts, I. Klavsuts, T. Avdeenko
The report presents innovative patented method and device of DSM for regulating customers' voltage which allow, to a considerable degree, to normalize electric power parameters for customers and also to control the quality of consumed energy and to economize electric power in electric networks of both high and low levels of voltage.
{"title":"Providing the quality of electric power by means of regulating customers' voltage","authors":"D. Klavsuts, I. Klavsuts, T. Avdeenko","doi":"10.1109/UPEC.2014.6934691","DOIUrl":"https://doi.org/10.1109/UPEC.2014.6934691","url":null,"abstract":"The report presents innovative patented method and device of DSM for regulating customers' voltage which allow, to a considerable degree, to normalize electric power parameters for customers and also to control the quality of consumed energy and to economize electric power in electric networks of both high and low levels of voltage.","PeriodicalId":414838,"journal":{"name":"2014 49th International Universities Power Engineering Conference (UPEC)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133223447","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}
Pub Date : 2014-10-23DOI: 10.1109/UPEC.2014.6934789
M. Perdigão, J. Alonso, E. S. Saraiva
This paper presents a review on low-pressure discharge lamp modelling. It gives a brief summary on commercially available low-pressure lamps, focusing on their main characteristics and presents highly referenced lamp models currently used by the researchers working on this field. Most of the appointed models can predict the lamps terminal characteristics accurately, under specific conditions, and are extremely useful in electronic ballast design.
{"title":"A review on low-pressure discharge lamp modelling","authors":"M. Perdigão, J. Alonso, E. S. Saraiva","doi":"10.1109/UPEC.2014.6934789","DOIUrl":"https://doi.org/10.1109/UPEC.2014.6934789","url":null,"abstract":"This paper presents a review on low-pressure discharge lamp modelling. It gives a brief summary on commercially available low-pressure lamps, focusing on their main characteristics and presents highly referenced lamp models currently used by the researchers working on this field. Most of the appointed models can predict the lamps terminal characteristics accurately, under specific conditions, and are extremely useful in electronic ballast design.","PeriodicalId":414838,"journal":{"name":"2014 49th International Universities Power Engineering Conference (UPEC)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133505131","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}
Pub Date : 2014-10-23DOI: 10.1109/UPEC.2014.6934608
M. Milad, M. Darwish
A Data Center can consist of a large group of networked servers and associated power distribution, networking, and cooling equipment. All these applications consume enormous amounts of energy which result in a significant increase in energy inefficiency problems. One of the causes of Data Center energy inefficiency power distribution is from the uninterruptible power supply (UPS). The UPS system is an alternate or backup source of power linking between mains power supply and end critical loads in order to provide back-up power and protection for the sensitive load. This study attempts to answer the question of how can future UPS topology and technology improve the efficiency of Data Center. In order to analyze the impact of different UPS technologies and their operating efficiencies, a model for a medium size Data Centre is developed, and load schedules and worked schematics were created to analyze and test the components of each of the UPS system topologies.
数据中心可以由大量联网服务器和相关的配电、网络和冷却设备组成。所有这些应用都消耗了大量的能源，这导致了能源效率低下问题的显著增加。不间断电源UPS (uninterrupted power supply)是造成数据中心能源分配效率低下的原因之一。UPS系统是连接主电源和终端关键负载之间的备用电源或备用电源，为敏感负载提供备用电源和保护。本研究试图回答未来UPS拓扑和技术如何提高数据中心效率的问题。为了分析不同UPS技术及其运行效率的影响，开发了一个中型数据中心的模型，并创建了负载时间表和工作原理图，以分析和测试每个UPS系统拓扑的组件。
{"title":"UPS system: How can future technology and topology improve the energy efficiency in data centers?","authors":"M. Milad, M. Darwish","doi":"10.1109/UPEC.2014.6934608","DOIUrl":"https://doi.org/10.1109/UPEC.2014.6934608","url":null,"abstract":"A Data Center can consist of a large group of networked servers and associated power distribution, networking, and cooling equipment. All these applications consume enormous amounts of energy which result in a significant increase in energy inefficiency problems. One of the causes of Data Center energy inefficiency power distribution is from the uninterruptible power supply (UPS). The UPS system is an alternate or backup source of power linking between mains power supply and end critical loads in order to provide back-up power and protection for the sensitive load. This study attempts to answer the question of how can future UPS topology and technology improve the efficiency of Data Center. In order to analyze the impact of different UPS technologies and their operating efficiencies, a model for a medium size Data Centre is developed, and load schedules and worked schematics were created to analyze and test the components of each of the UPS system topologies.","PeriodicalId":414838,"journal":{"name":"2014 49th International Universities Power Engineering Conference (UPEC)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114286147","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}
Pub Date : 2014-10-23DOI: 10.1109/UPEC.2014.6934823
R. Vatu, Oana Ceaki, N. Golovanov, R. Porumb, G. Seritan
The power systems sector is undergoing a complete overhaul to a smarter system, in which the consumers are becoming prosumers. Energy storage is a vital component of the smart grids that are currently being built around the world. These grids are designed to improve the reliability of electricity transmission and distribution, facilitate the integration of renewable energy generators and allow long - distance trading of electricity supplies. The efficiency of the power supplied by the renewable energy sources can be maximized when paired with an energy storage system. In this framework, current paper is addressing the issues of batteries capacity, prices and reliability. In the first section, a general analysis was performed, aimed at accurately identifying the current state-of-the art of storage systems. An example was designed, starting from a real electric distribution system, in order to create an array of possible issues and solutions which will be further scrutinized.
{"title":"Analysis of storage technologies within smart grid framework","authors":"R. Vatu, Oana Ceaki, N. Golovanov, R. Porumb, G. Seritan","doi":"10.1109/UPEC.2014.6934823","DOIUrl":"https://doi.org/10.1109/UPEC.2014.6934823","url":null,"abstract":"The power systems sector is undergoing a complete overhaul to a smarter system, in which the consumers are becoming prosumers. Energy storage is a vital component of the smart grids that are currently being built around the world. These grids are designed to improve the reliability of electricity transmission and distribution, facilitate the integration of renewable energy generators and allow long - distance trading of electricity supplies. The efficiency of the power supplied by the renewable energy sources can be maximized when paired with an energy storage system. In this framework, current paper is addressing the issues of batteries capacity, prices and reliability. In the first section, a general analysis was performed, aimed at accurately identifying the current state-of-the art of storage systems. An example was designed, starting from a real electric distribution system, in order to create an array of possible issues and solutions which will be further scrutinized.","PeriodicalId":414838,"journal":{"name":"2014 49th International Universities Power Engineering Conference (UPEC)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132232235","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}
Pub Date : 2014-10-23DOI: 10.1109/UPEC.2014.6934775
P. Sanjeevikumar, Benish Paily, M. Basu, M. Conlon
This paper presents the identification and classification of different faults that can occur in a LCC-HVDC system, with the help of artificial neural network (ANN) training algorithm technique. In particular, single-line to ground, double-line to ground, line-line, HVDC transmission line (dc link) and load side inverter faults are examined. A complete model of a 12-pulse LCC-HVDC system together with an ANN algorithm is modeled in numerical simulation software. The output of the ANN can predict the change in appropriate firing angle required for the HVDC rectifier unit under steady state normal operation and various fault conditions. A set of simulation results are provided to show the effectiveness of the ANN technique subjected to developed fault conditions.
{"title":"Classification of fault analysis of HVDC systems using artificial neural network","authors":"P. Sanjeevikumar, Benish Paily, M. Basu, M. Conlon","doi":"10.1109/UPEC.2014.6934775","DOIUrl":"https://doi.org/10.1109/UPEC.2014.6934775","url":null,"abstract":"This paper presents the identification and classification of different faults that can occur in a LCC-HVDC system, with the help of artificial neural network (ANN) training algorithm technique. In particular, single-line to ground, double-line to ground, line-line, HVDC transmission line (dc link) and load side inverter faults are examined. A complete model of a 12-pulse LCC-HVDC system together with an ANN algorithm is modeled in numerical simulation software. The output of the ANN can predict the change in appropriate firing angle required for the HVDC rectifier unit under steady state normal operation and various fault conditions. A set of simulation results are provided to show the effectiveness of the ANN technique subjected to developed fault conditions.","PeriodicalId":414838,"journal":{"name":"2014 49th International Universities Power Engineering Conference (UPEC)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134009289","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}
Pub Date : 2014-10-23DOI: 10.1109/UPEC.2014.6934832
R. Fizesan, O. Pop
Power distribution networks (PDNs) consist in power and ground planes, voltage regulator modules and decoupling capacitors, [4]. Power and ground planes, knows as two parallel planes are widely used in printed circuit boards. In PDN design, already exists dedicated software that help the PI engineer to design a PDN according to the necessities. Using PSPICE, the planes of arbitrary shape can be modeled efficiently along with the circuit components connected to the planes. The goal of this paper is to introduce different parameterized PI SPICE platforms, based on the finite difference method that helps a PI engineer to analyze a PDN in both frequency and time domain.
{"title":"Parameterized PI SPICE platforms for AC and time-domain simulations","authors":"R. Fizesan, O. Pop","doi":"10.1109/UPEC.2014.6934832","DOIUrl":"https://doi.org/10.1109/UPEC.2014.6934832","url":null,"abstract":"Power distribution networks (PDNs) consist in power and ground planes, voltage regulator modules and decoupling capacitors, [4]. Power and ground planes, knows as two parallel planes are widely used in printed circuit boards. In PDN design, already exists dedicated software that help the PI engineer to design a PDN according to the necessities. Using PSPICE, the planes of arbitrary shape can be modeled efficiently along with the circuit components connected to the planes. The goal of this paper is to introduce different parameterized PI SPICE platforms, based on the finite difference method that helps a PI engineer to analyze a PDN in both frequency and time domain.","PeriodicalId":414838,"journal":{"name":"2014 49th International Universities Power Engineering Conference (UPEC)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133046543","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}
Pub Date : 2014-10-23DOI: 10.1109/UPEC.2014.6934683
M. M. Alamuti, R. Rabbani, S. K. Kerahroudi, G. Taylor
Bulk power transfer requirements over long distances within a country or between neighboring countries as well as rapid increase in the number of offshore wind farms, have increased the application of high voltage DC links. Apart from the controllable power flow function of HVDC systems, advanced controllers can be employed to extend their functionality for dynamic and transient stability improvement of AC systems. As an attempt to improve the influence of HVDC technology on AC system stability, this paper proposes a supplementary active power controller for the HVDC system. The Model Predictive Control (MPC) approach is considered for the control design. The design process of weight tuning and parameterization of the MPC controller has been investigated. Additionally the effect of controller model reduction is demonstrated in the presented results.
{"title":"System stability improvement through HVDC supplementary Model Predictive Control","authors":"M. M. Alamuti, R. Rabbani, S. K. Kerahroudi, G. Taylor","doi":"10.1109/UPEC.2014.6934683","DOIUrl":"https://doi.org/10.1109/UPEC.2014.6934683","url":null,"abstract":"Bulk power transfer requirements over long distances within a country or between neighboring countries as well as rapid increase in the number of offshore wind farms, have increased the application of high voltage DC links. Apart from the controllable power flow function of HVDC systems, advanced controllers can be employed to extend their functionality for dynamic and transient stability improvement of AC systems. As an attempt to improve the influence of HVDC technology on AC system stability, this paper proposes a supplementary active power controller for the HVDC system. The Model Predictive Control (MPC) approach is considered for the control design. The design process of weight tuning and parameterization of the MPC controller has been investigated. Additionally the effect of controller model reduction is demonstrated in the presented results.","PeriodicalId":414838,"journal":{"name":"2014 49th International Universities Power Engineering Conference (UPEC)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125446470","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}
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