Benjamin Williamson, M. Redfern, R. Aggarwal, Jacob Allinson, Chris Harris, P. Bowley, R. Hotchkiss
{"title":"Project Edison: SMART-DC","authors":"Benjamin Williamson, M. Redfern, R. Aggarwal, Jacob Allinson, Chris Harris, P. Bowley, R. Hotchkiss","doi":"10.1109/ISGTEurope.2011.6162642","DOIUrl":"https://doi.org/10.1109/ISGTEurope.2011.6162642","url":null,"abstract":"The “War of the Currents” has raged since the 1880s and has been revitalised with the move to widespread use of computers and communications, low energy LED lighting and renewable energy generators. “Project Edison: SMARTDC” is a demonstration project using a DC (Direct Current) smart supply network for ICT and lighting at the University of Bath, UK. A centralised AC/DC converter provides power through a low voltage distribution system to an array of computers and monitors which are part of the library's education support facilities. This bulk DC network provides a secure supply for individual computers and monitors together with several advantages for the AC power network.","PeriodicalId":419250,"journal":{"name":"2011 2nd IEEE PES International Conference and Exhibition on Innovative Smart Grid Technologies","volume":"56 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":"126605020","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}
N. O'Connell, Qiuwei Wu, J. Østergaard, A. Nielsen, S. Cha, Yi Ding
{"title":"Electric Vehicle (EV) charging management with dynamic distribution system tariff","authors":"N. O'Connell, Qiuwei Wu, J. Østergaard, A. Nielsen, S. Cha, Yi Ding","doi":"10.1109/ISGTEurope.2011.6162740","DOIUrl":"https://doi.org/10.1109/ISGTEurope.2011.6162740","url":null,"abstract":"Electric Vehicles (EV) presents a unique opportunity for large-scale flexible demand, particularly when subject to intelligent charging. A smart charging algorithm is proposed here, with the dual objectives of minimizing charging costs and preventing grid congestion. EVs are charged according to individual user requirements while respecting the constraints of the local distribution grid. A day-ahead dynamic distribution system tariff (DT) scheme is proposed to avoid congestion on the local distribution system from the day-ahead planning perspective. Locational marginal pricing is used to determine the dynamic distribution system tariff based on predicted day-ahead spot prices and predicted charging behaviors. Case studies were carried out using distribution grids from the Danish island of Bornholm and the case studies demonstrate the efficacy of the proposed EV charging schedule algorithm","PeriodicalId":419250,"journal":{"name":"2011 2nd IEEE PES International Conference and Exhibition on Innovative Smart Grid Technologies","volume":"71 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":"126826652","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}
{"title":"Development and operation of virtual power plant system","authors":"K. E. Bakari, W. Kling","doi":"10.1109/ISGTEurope.2011.6162710","DOIUrl":"https://doi.org/10.1109/ISGTEurope.2011.6162710","url":null,"abstract":"Nowadays a virtual power plant (VPP) represents an aggregation of distributed energy resources (DER) and may include controllable loads as well as storage devices [1]. This concept is considered as a promising technology to allocate energy and redirect power flow in the distribution network. In addition, its ICT infrastructure can be deployed to the transition of passive distribution network towards active network [2]. On the other hand it is possible to make use of the available ICT infrastructure which belongs to established smart grid functions to create VPPs. Furthermore, as shown in previous work [3], the VPP system can cope with operational problems caused by high penetration level of DER in the distribution network. However, while the virtual power plant concept is considered as a promising technology to manage large numbers of DER, the establishment of such a system might liberate several challenges to its developer. This work focuses on providing options for the development and operation of the VPP system considering major technical, regulatory and socio-economical challenges. These options are mainly based on studies and experiences which are obtained during the development of a VPP pilot by a distribution network operator in the Netherlands. The main objectives of this pilot are to develop and test the balancing and network services as well as energy trade provided by the VPP system. Based on the methodology and techniques of Systems Engineering a scalable, traceable and modular VPP system is achieved. This methodology is also found effective during the definition of needed ‘VPP pilot’-tests which are related to the requirements of the VPP stakeholders‥","PeriodicalId":419250,"journal":{"name":"2011 2nd IEEE PES International Conference and Exhibition on Innovative Smart Grid Technologies","volume":"54 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":"122538367","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}
{"title":"Modeling and control for smart grid integration of solar/wind energy conversion system","authors":"E. Natsheh, A. Albarbar, J. Yazdani","doi":"10.1109/ISGTEurope.2011.6162643","DOIUrl":"https://doi.org/10.1109/ISGTEurope.2011.6162643","url":null,"abstract":"Performance optimization, system reliability and operational efficiency are key characteristics of smart grid systems. In this paper a novel model of smart grid-connected PV/WT hybrid system is developed. It comprises photovoltaic array, wind turbine, asynchronous (induction) generator, controller and converters. The model is implemented using MATLAB/SIMULINK software package. Perturb and observe (P&O) algorithm is used for maximizing the generated power based on maximum power point tracker (MPPT) implementation. The dynamic behavior of the proposed model is examined under different operating conditions. Solar irradiance, temperature and wind speed data is gathered from a grid connected, 28.8kW solar power system located in central Manchester. Real-time measured parameters are used as inputs for the developed system. The proposed model and its control strategy offer a proper tool for smart grid performance optimization.","PeriodicalId":419250,"journal":{"name":"2011 2nd IEEE PES International Conference and Exhibition on Innovative Smart Grid Technologies","volume":"41 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":"116811938","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}
{"title":"A novel method for recovery of drainage power from distribution transformers","authors":"P. Nair, K. PreethaP.","doi":"10.1109/ISGTEurope.2011.6162661","DOIUrl":"https://doi.org/10.1109/ISGTEurope.2011.6162661","url":null,"abstract":"Non-linear loads have become a larger percentage of the total load in commercial facilities. The use of non-linear loads results in excessive injection of harmonic components from the customer facility onto the utility power system. Conventional distribution transformers are of delta-star type, providing 3-phase 4-wire ac distribution. In such a case, the triplen harmonic currents caused due to non-linear loads get circulated in the primary delta winding. But this leads to increased power losses, temperature rise and subsequent de-rating as well as reduction in life of transformers. This paper proposes a novel method for recovering the drainage power which is normally wasted in the delta winding of the distribution transformer. The experimental studies conducted on a three kVA transformer shows that when the drainage power of delta winding is recovered it helps in improving the transformer efficiency and system power factor.","PeriodicalId":419250,"journal":{"name":"2011 2nd IEEE PES International Conference and Exhibition on Innovative Smart Grid Technologies","volume":"7 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":"117006868","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}
{"title":"Using wavelet synopsis techniques on electric power system measurements","authors":"P. Moutis, N. Hatziargyriou","doi":"10.1109/ISGTEurope.2011.6162680","DOIUrl":"https://doi.org/10.1109/ISGTEurope.2011.6162680","url":null,"abstract":"The elaboration of power system data is of crucial importance to the study of power system quality, control and development. Considering the widely interconnected grid and its future expansions, the integration of historical data (namely time series of various scales) to databases, implies the exponential increase of their size. Even in the case of small island systems, the logging of numerous values in sampling time of seconds can lead to similar results. Moreover, since some central assessment by Transmission System Operators (TSOs) has to be executed, the need to transmit this information over a network of given capacity also rises. To face the above issues, methods to compress time series data are examined in this paper. The wavelet synopsis techniques of Garofalakis-Kumar and the Greedy are applied for queries evaluated according to the L2 metric, while the Garofalakis-Kumar and the Selection of the Top-k Haar coefficients are used for queries evaluated according to the L∞ metric. The reconstructed time series, after the application of each synopsis technique, is compared to the original one according to specific criteria. Suggestions for further study and research are pointed out.","PeriodicalId":419250,"journal":{"name":"2011 2nd IEEE PES International Conference and Exhibition on Innovative Smart Grid Technologies","volume":"4 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":"129949628","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}
Yang Beige, Xue Hui, Bai Dan-dan, Hu Wei, He Jinghan
{"title":"Fault analysis of distribution network with wind turbines of DFIG","authors":"Yang Beige, Xue Hui, Bai Dan-dan, Hu Wei, He Jinghan","doi":"10.1109/ISGTEUROPE.2011.6162716","DOIUrl":"https://doi.org/10.1109/ISGTEUROPE.2011.6162716","url":null,"abstract":"With high penetrations of wind energy, different types of wind farm generators do not have the same fault transient characteristics that can complicate the selection and configuration of wind farm grid protection equipment. Incorrect selection of protection equipment will affect the stability and of the power systems. This paper investigates and analyzes the transient characteristics of doubly-fed induction generator (DFIG) under various short-circuit fault conditions for a typical distribution network. Firstly a detailed model of the DFIG and its principles is descried. A realistic of a 99 MW wind farm with 66 units of 1.5 MW DFIG is modeled using RTDS/RSCAD. The transient characteristic of the wind farm with the DFIG units have been analyzed under different short-circuit fault conditions. Results from the fault performance study on the distribution network are presented and discussed.","PeriodicalId":419250,"journal":{"name":"2011 2nd IEEE PES International Conference and Exhibition on Innovative Smart Grid Technologies","volume":"96 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":"114687193","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}
{"title":"The smart grid's safety: Dynamical hierarchical criticality matrices-based analysis","authors":"V. Kharchenko, Eugene Brezhnev, A. Boyarchuk","doi":"10.1109/ISGTEurope.2011.6162765","DOIUrl":"https://doi.org/10.1109/ISGTEurope.2011.6162765","url":null,"abstract":"The power grid safety is achieved by eliminating or decreasing to an acceptable level of all grid operation-related hazards for the society and human beings. The development of the smart grid (SG) concept stipulates the need for implementing novel approaches to grid safety analysis and risk mitigation. These approaches must be developed considering the informational technologies and innovations.","PeriodicalId":419250,"journal":{"name":"2011 2nd IEEE PES International Conference and Exhibition on Innovative Smart Grid Technologies","volume":"60 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":"126536862","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}
I. G. Alonso, Paula Suarez, Verdad Curto, O. A. Fres
{"title":"Work in progress: Smart home energy (SHE)","authors":"I. G. Alonso, Paula Suarez, Verdad Curto, O. A. Fres","doi":"10.1109/ISGTEurope.2011.6162797","DOIUrl":"https://doi.org/10.1109/ISGTEurope.2011.6162797","url":null,"abstract":"The objective of the SHE Project is to develop a solution for the Digital Home users allowing a progressive reduction in the electrical consumption in the home as well as encouraging a more appropriate and rational use of electric energy. With this objective, a platform for energetic management will be designed and developed. It will offer a cloud service which shelters the information for a progress data center and which establishment do not require concrete services, it will be automatic in order to provide a easier handling to the user. The assessment for its use is intended to be performed through a friendly environment, e.g. mobile applications and recommendation systems which suggest the user about the utilization of electrical resources in home, based on the previous analysis of the users' habits.","PeriodicalId":419250,"journal":{"name":"2011 2nd IEEE PES International Conference and Exhibition on Innovative Smart Grid Technologies","volume":"62 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":"121690094","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}
{"title":"A new bi-directional charger for vehicle-to-grid integration","authors":"R. J. Ferreira, L. Miranda, R. Araújo, J. Lopes","doi":"10.1109/ISGTEurope.2011.6162770","DOIUrl":"https://doi.org/10.1109/ISGTEurope.2011.6162770","url":null,"abstract":"Bidirectional and efficient on-board charger systems for electric vehicles is a challenge nowadays. This paper describes a novel power converter system that implements bidirectional flow between the grid and an electric vehicle battery, where a dual active bridge is advantageous. With a bidirectional topology and proper control all the major grid constraints, such as power quality, harmonic rejection, active and reactive power control, and others, can be easily satisfied. A hardware prototype of the power converter is built. Experimental results from this hardware prototype verify the preliminary operation and claims of the V2G power interface.","PeriodicalId":419250,"journal":{"name":"2011 2nd IEEE PES International Conference and Exhibition on Innovative Smart Grid Technologies","volume":"35 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":"133921680","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}