{"title":"Dynamic cable ratings for smarter grids","authors":"R. Huang, J. Pilgrim, P. Lewin, D. Payne","doi":"10.1109/ISGTEurope.2013.6695230","DOIUrl":"https://doi.org/10.1109/ISGTEurope.2013.6695230","url":null,"abstract":"This paper discusses the shortage of static current ratings in the increasingly stressed, yet intelligent, power grid. Using online monitoring systems, real-time data can be obtained to perform a more accurate and reliable Dynamic Rating. A comparison of base thermal models is presented, demonstrating that the widely used IEC60853 approach is not always the most accurate. Load current prediction algorithms based on support vector regression are examined, along with the requirements for ambient temperature data. Through considering data from operational transmission cable circuits, the value of taking a network level approach is demonstrated.","PeriodicalId":307118,"journal":{"name":"IEEE PES ISGT Europe 2013","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116099174","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. Vechiu, Aitor Etxeberria, H. Camblong, S. Baudoin, S. Kreckelbergh
{"title":"Hybrid energy storage system with unique power electronic interface for microgrids","authors":"I. Vechiu, Aitor Etxeberria, H. Camblong, S. Baudoin, S. Kreckelbergh","doi":"10.1109/ISGTEurope.2013.6695408","DOIUrl":"https://doi.org/10.1109/ISGTEurope.2013.6695408","url":null,"abstract":"The increasing penetration of Distributed Generation systems based on Renewable Energy Sources is introducing new challenges in the current centralized electric grid. Microgrids are one of the most useful and efficient ways to integrate the renewable energy technologies. As the stability of a microgrid is highly sensitive, an energy storage system is essential and it must satisfy two criteria: to have a high storage capacity and to be able to supply fast power variations. In order to satisfy these two constraints, this paper proposes the association of a Vanadium Redox Battery (VRB) and Supercapacitor (SC) bank in a Hybrid Energy Storage System (HESS). A Three-level Neutral Point Clamped (3LNPC) Inverter is used as a unique interface between the HESS and the microgrid. The paper focuses on the dynamic modelling and validation of the HESS, the power division and the modulation strategies used with the 3LNPC to mitigate the neutral point voltage unbalance effect.","PeriodicalId":307118,"journal":{"name":"IEEE PES ISGT Europe 2013","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115767347","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":"Introducing decentralized EV charging coordination for the voltage regulation","authors":"Olivier Beaude, Yujun He, Martin Hennebel","doi":"10.1109/ISGTEurope.2013.6695375","DOIUrl":"https://doi.org/10.1109/ISGTEurope.2013.6695375","url":null,"abstract":"This paper investigates a decentralized optimization methodology to coordinate Electric Vehicles (EV) charging in order to contribute to the voltage control on a residential electrical distribution feeder. This aims to maintain the voltage level in function of the EV's power injection using the sensitivity matrix approach. The decentralized optimization is tested with two different methods, respectively global and local, when EV take into account their impact on all the nodes of the network or only on a local neighborhood of their connection point. EV can also update their decisions asynchronously or synchronously. While only the global approach with asynchronous update is theoretically proven to converge, using results from game theory, simulations show the potential of other algorithms for which fewer iterations or fewer informations are necessary. Finally, using Monte Carlo simulations over a wide range of EV localization configurations, the first analysis have also shown a promising performance in comparison with uncoordinated charging or with a “voltage droop charging control” recently proposed in the literature.","PeriodicalId":307118,"journal":{"name":"IEEE PES ISGT Europe 2013","volume":"156 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122857550","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}
D. Geelen, Manon Vos-Vlamings, F. Filippidou, Albert van de Noort, Maike van Grootel, H. Moll, A. Reinders, D. Keyson
{"title":"An end-user perspective on smart home energy systems in the PowerMatching City demonstration project","authors":"D. Geelen, Manon Vos-Vlamings, F. Filippidou, Albert van de Noort, Maike van Grootel, H. Moll, A. Reinders, D. Keyson","doi":"10.1109/ISGTEurope.2013.6695387","DOIUrl":"https://doi.org/10.1109/ISGTEurope.2013.6695387","url":null,"abstract":"In discussions on smart grids, it is often stated that residential end-users will play a more active role in the management of the electric power system. Experience in practice on how to empower end-users for such a role is however limited. This paper presents a field study in the first phase of the PowerMatching City project in which twenty-two households were equipped with demand-response-enabled heating systems and white goods. Although end-users were satisfied with the degree of living comfort afforded by the smart energy system, the user interface did not provide sufficient control and energy feedback to support an active contribution to the balancing of supply and demand. The full potential of demand response was thus not realized. The second phase of the project builds on these findings by design, implementation and evaluation of an improved user interface in combination with two demand response propositions.","PeriodicalId":307118,"journal":{"name":"IEEE PES ISGT Europe 2013","volume":"298 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124239613","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}
Shaohua Lin, Dong Chen, Puming Li, Yuefeng Lu, J. Zhong, Yuqian Song, Zhongwei Wang
{"title":"Application of dynamic zoning scheme in Guangdong power grid","authors":"Shaohua Lin, Dong Chen, Puming Li, Yuefeng Lu, J. Zhong, Yuqian Song, Zhongwei Wang","doi":"10.1109/ISGTEurope.2013.6695310","DOIUrl":"https://doi.org/10.1109/ISGTEurope.2013.6695310","url":null,"abstract":"In this paper, power system area division scheme is discussed for system operation and control. By using system sensitivity analysis and N-1 contingency analysis, a dynamic system zoning scheme is proposed. Applying this area division scheme can reduce the risk of system mis-operation due to the complexity of power system and simplify the computing process. The proposed dynamic zoning scheme has been verified and tested using the network of actual power system of Guangdong province, China. And this scheme will be eventually applied as a build-in module in the next generation EMS system design for Guangdong power grid.","PeriodicalId":307118,"journal":{"name":"IEEE PES ISGT Europe 2013","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115466378","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 effect of mobility forecasts for stochastic charge scheduling of aggregated PEV","authors":"Ilan Momber, T. Gómez","doi":"10.1109/ISGTEurope.2013.6695292","DOIUrl":"https://doi.org/10.1109/ISGTEurope.2013.6695292","url":null,"abstract":"Plug-in Electric Vehicles (PEV) integration into innovative smart grids has been studied widely. Recently, special attention is paid to the role of the aggregation agent, which might be responsible of controlling the charge schedules to its own and the system's benefit. Furthermore, an increasing awareness of the stochasticity involved in PEV charging, reflected in a number of recent publications, can be observed. Among others, the PEV energy retail problem with interactions in day-ahead and balancing markets has been formulated from the aggregator's perspective, taking into account location dependent network tariffs in the form of capacity prices for active power. However, a numerical quantification of the benefit from accounting for stochasticity has yet to be carried out. Therefore, this paper uses standard methodology to calculate stochastic programming quality metrics such as the value of the stochastic solution (VSS) and the expected value of private information (EVPI) for an established PEV energy retail aggregator model. Applied to a real medium voltage system with urban characteristics and realistic spatial PEV mobility, different levels of mobility forecasts are included as information at the first-stage here and now decisions.","PeriodicalId":307118,"journal":{"name":"IEEE PES ISGT Europe 2013","volume":"259 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123096914","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}
W. Willems, T. Vandoorn, J. D. Kooning, L. Vandevelde
{"title":"Development of a smart transformer to control the power exchange of a microgrid","authors":"W. Willems, T. Vandoorn, J. D. Kooning, L. Vandevelde","doi":"10.1109/ISGTEurope.2013.6695300","DOIUrl":"https://doi.org/10.1109/ISGTEurope.2013.6695300","url":null,"abstract":"A smart transformer enables to control the power exchange between a microgrid and the utility network by controlling the voltage at the microgrid side within certain limits. The distributed generation units in the microgrid are equipped with a voltage-based droop control strategy. This controller reacts on the voltage change, making the smart transformer an element that controls power exchange without the need for communication to other elements in the microgrid. To build a smart transformer, several concepts are possible. In a smart transformer with continuous turns ratio, hereafter referred to as continuous smart transformer, the transformer's microgrid-side voltage can be controlled without voltage steps and the accuracy of the voltage control can be very high. The voltage control of a smart transformer with discrete turns ratio, hereafter referred to as discrete smart transformer, is less accurate, as the output voltage is regulated between several discrete values. In this paper, the development of a continuous and discrete smart transformer will be elaborated. Their validity will be proven by implementing these smart transformers in an experimental test setup. Also, some concepts to improve the control accuracy will be proposed.","PeriodicalId":307118,"journal":{"name":"IEEE PES ISGT Europe 2013","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127186122","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}
Venkatachalam Lakshmanan, M. Marinelli, A. Kosek, F. Sossan, P. Norgard
{"title":"Domestic refrigerators temperature prediction strategy for the evaluation of the expected power consumption","authors":"Venkatachalam Lakshmanan, M. Marinelli, A. Kosek, F. Sossan, P. Norgard","doi":"10.1109/ISGTEurope.2013.6695411","DOIUrl":"https://doi.org/10.1109/ISGTEurope.2013.6695411","url":null,"abstract":"This paper discusses and presents a simple temperature prediction strategy for the domestic refrigerator. The main idea is to predict the duration it takes to the cold chamber temperature to reach the thresholds according to the state of the compressor and to the last temperature measurements. The experiments are conducted at SYSLAB facility at DTU Risø Campus having a set of refrigerators working at different set point temperatures, with different ambient temperatures and under different thermal load conditions. The prediction strategy is tested using a set of different refrigerators in order to validate the performances. The challenges to calculate the time with less error pronouncement in temperature, regulating power supply and its duration are also discussed.","PeriodicalId":307118,"journal":{"name":"IEEE PES ISGT Europe 2013","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123453706","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}
A. Mutanen, S. Repo, P. Järventausta, A. Lof, D. D. Giustina
{"title":"Testing low voltage network state estimation in RTDS environment","authors":"A. Mutanen, S. Repo, P. Järventausta, A. Lof, D. D. Giustina","doi":"10.1109/ISGTEurope.2013.6695482","DOIUrl":"https://doi.org/10.1109/ISGTEurope.2013.6695482","url":null,"abstract":"The low voltage network operating environment is going through changes. The simultaneous introduction of intermittent renewable energy production and customer requirements for increased power quality and supply reliability are forcing utilities to rethink the role of low voltage networks. With recent advances in smart grid technology, low voltage network automation is emerging as a viable option to traditional network investments. Congestion management and demand response, for example, can be used to keep the network currents and voltages within acceptable limits. In order to control the network, we must first have a comprehensive view on the state of the network. In this paper, the low voltage network monitoring concept proposed by the FP7 European project INTEGRIS is tested. Real-Time Digital Simulator (RTDS) is used to test how well the measurements from secondary substations and smart meters can be combined in a state estimator to get a real-time view of the network state.","PeriodicalId":307118,"journal":{"name":"IEEE PES ISGT Europe 2013","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123765125","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":"Evaluation of fault current limitation techniques in urban meshed 110-kV subtransmission networks","authors":"B. Sousa, M. Lehtonen, Atte Pihkala","doi":"10.1109/ISGTEurope.2013.6695275","DOIUrl":"https://doi.org/10.1109/ISGTEurope.2013.6695275","url":null,"abstract":"In the municipality of Helsinki, plans to expand its subtransmission network in the next few years predict excessive high short-circuit levels in numerous substations. The existing network embodies overhead lines (OHL) and underground cables (UGC), in many occasions assembled in parallel, as well as combined heat and power (CHP) facilities. Furthermore, it is characterized by meshed topology, which ensures system flexibility and improved reliability; however, this configuration favors propagation of fault currents and voltage sags across the grid. To minimize damage from these, the present study investigates prospective fault current limitation techniques, including the superconducting fault current limiter (SFCL), regarding the features of the Helsinki subtransmission network. This paper inspects the optimal location of these solutions and performs economic assessment. Moreover, it examines the benefits of the employed techniques, assesses whether they achieve the desired operational performance, and quantifies total costs, accrediting load growth for a 40-year period.","PeriodicalId":307118,"journal":{"name":"IEEE PES ISGT Europe 2013","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115174517","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}