Pub Date : 2015-10-01DOI: 10.1109/ISGT-LA.2015.7381260
Igor Soares dos Santos, O. Saavedra, Shigeaki L. de Lima
In this article, the problem of allocation of photovoltaic generators in a distribution network while losses are minimized considering network operating constraints is formulated and solved. Three formulations are considered. In order to take into account adequately the imbalance of distribution networks, a three-phase approach is considered. To solve the three formulations a stochastic algorithm based on an evolution strategy is used showing good results in minimizing technical losses. The results obtained illustrate the proposals and their practical use.
{"title":"Optimal allocation of photovoltaic plants in electric power distribution networks","authors":"Igor Soares dos Santos, O. Saavedra, Shigeaki L. de Lima","doi":"10.1109/ISGT-LA.2015.7381260","DOIUrl":"https://doi.org/10.1109/ISGT-LA.2015.7381260","url":null,"abstract":"In this article, the problem of allocation of photovoltaic generators in a distribution network while losses are minimized considering network operating constraints is formulated and solved. Three formulations are considered. In order to take into account adequately the imbalance of distribution networks, a three-phase approach is considered. To solve the three formulations a stochastic algorithm based on an evolution strategy is used showing good results in minimizing technical losses. The results obtained illustrate the proposals and their practical use.","PeriodicalId":345318,"journal":{"name":"2015 IEEE PES Innovative Smart Grid Technologies Latin America (ISGT LATAM)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133894192","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 : 2015-10-01DOI: 10.1109/ISGT-LA.2015.7381237
A. Andres, Juan D. Sanchez A, Luis-Henrique Martinez, R. A. Hincapié, M. Granada
Lately, the development of the Electric Vehicle (EV) has become a strategy to soften the collateral damages of the environment pollution. However, the forecasts of a wide EVs deployment, establish a stress that has to be carefully analyzed in distribution systems. Whereby, the need arises of researching respect to the effects of EVs on electric grids since different perspectives. This paper presents a review of the last forty years around the interaction of EVs and distribution systems. Several works have been reported, considering diverse trends: the power quality, ancillary services and the participation of EVs in electricity markets, among others.
{"title":"An IEEE Xplore database literature review regarding the interaction between electric vehicles and power grids","authors":"A. Andres, Juan D. Sanchez A, Luis-Henrique Martinez, R. A. Hincapié, M. Granada","doi":"10.1109/ISGT-LA.2015.7381237","DOIUrl":"https://doi.org/10.1109/ISGT-LA.2015.7381237","url":null,"abstract":"Lately, the development of the Electric Vehicle (EV) has become a strategy to soften the collateral damages of the environment pollution. However, the forecasts of a wide EVs deployment, establish a stress that has to be carefully analyzed in distribution systems. Whereby, the need arises of researching respect to the effects of EVs on electric grids since different perspectives. This paper presents a review of the last forty years around the interaction of EVs and distribution systems. Several works have been reported, considering diverse trends: the power quality, ancillary services and the participation of EVs in electricity markets, among others.","PeriodicalId":345318,"journal":{"name":"2015 IEEE PES Innovative Smart Grid Technologies Latin America (ISGT LATAM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129874640","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 : 2015-10-01DOI: 10.1109/ISGT-LA.2015.7381177
L. Reyes-Chamorro, M. Paolone, A. Bernstein, J. Le Boudec
Supercapacitors-based storage systems are expected to play a key role in microgrids in view of their capability to compensate high-power imbalances. We define an agent for the control of supercapacitor arrays within the context of the novel control framework Commelec, proposed by the Authors as a composable method for real-time control of active distribution networks with explicit power setpoints. An important function of such an agent is to advertise the real-time power capabilities and operational preferences of the supercapacitor array based on local information. Given the small energy capacity of such a device, its internal state can largely vary from one setpoint implementation to the next one. For this reason, the use of an accurate model is crucial in the agent definition. We show that it is possible to infer the real-time power capabilities of the device by using simple measurements on the supercapacitor array suitably coupled with an accurate representation of the cells composing the array. Results show that the agent is able to speak for the resource, thus allowing its use from an external controller.
{"title":"A supercapacitor agent for providing real-time power services to the grid","authors":"L. Reyes-Chamorro, M. Paolone, A. Bernstein, J. Le Boudec","doi":"10.1109/ISGT-LA.2015.7381177","DOIUrl":"https://doi.org/10.1109/ISGT-LA.2015.7381177","url":null,"abstract":"Supercapacitors-based storage systems are expected to play a key role in microgrids in view of their capability to compensate high-power imbalances. We define an agent for the control of supercapacitor arrays within the context of the novel control framework Commelec, proposed by the Authors as a composable method for real-time control of active distribution networks with explicit power setpoints. An important function of such an agent is to advertise the real-time power capabilities and operational preferences of the supercapacitor array based on local information. Given the small energy capacity of such a device, its internal state can largely vary from one setpoint implementation to the next one. For this reason, the use of an accurate model is crucial in the agent definition. We show that it is possible to infer the real-time power capabilities of the device by using simple measurements on the supercapacitor array suitably coupled with an accurate representation of the cells composing the array. Results show that the agent is able to speak for the resource, thus allowing its use from an external controller.","PeriodicalId":345318,"journal":{"name":"2015 IEEE PES Innovative Smart Grid Technologies Latin America (ISGT LATAM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130024334","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 : 2015-10-01DOI: 10.1109/ISGT-LA.2015.7381121
D. Q. Oliveira, D. Marujo, M. Santos, B. Bonatto, H. Arango, A. C. Zambroni de Souza, L. Delboni, J. M. Carvalho Filho, P. Silveira, L. A. Felber, M. F. Braga
The voltage regulation problem is very complex and important in electric power systems. Such problem is related to keep the voltages within pre-determined levels according to the current legislation. The application of smart grids' concepts helps in this problem by giving more background to take decisions and enabling the possibility of considering a wider picture of the power system to take control actions. This paper proposes a multobjective voltage control in smart distribution systems using Artificial Immune Systems. The proposed methodology considers the active power losses, nonconformity voltage levels fines and switching costs as variables. The IEEE 34 node test feeder and a real feeder are used as examples to assess the methodology robustness.
{"title":"Multiobjective voltage control in smart distribution power systems","authors":"D. Q. Oliveira, D. Marujo, M. Santos, B. Bonatto, H. Arango, A. C. Zambroni de Souza, L. Delboni, J. M. Carvalho Filho, P. Silveira, L. A. Felber, M. F. Braga","doi":"10.1109/ISGT-LA.2015.7381121","DOIUrl":"https://doi.org/10.1109/ISGT-LA.2015.7381121","url":null,"abstract":"The voltage regulation problem is very complex and important in electric power systems. Such problem is related to keep the voltages within pre-determined levels according to the current legislation. The application of smart grids' concepts helps in this problem by giving more background to take decisions and enabling the possibility of considering a wider picture of the power system to take control actions. This paper proposes a multobjective voltage control in smart distribution systems using Artificial Immune Systems. The proposed methodology considers the active power losses, nonconformity voltage levels fines and switching costs as variables. The IEEE 34 node test feeder and a real feeder are used as examples to assess the methodology robustness.","PeriodicalId":345318,"journal":{"name":"2015 IEEE PES Innovative Smart Grid Technologies Latin America (ISGT LATAM)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129237286","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 : 2015-10-01DOI: 10.1109/ISGT-LA.2015.7381202
Daniel Apablaza, J. Muñoz
An interleaved boost topology suitable for multistring photovoltaic topologies is presented in this paper. The presented topology allows to use independent and decoupled Maximum Power Point Tracking algorithms in order to optimize the use of the solar energy, especially for large PV farms, where the special location of the panels is distributed. The main features of an interleaved structures are presented and why they are adequate for connect several PV modules is explained. A basic Perturb and Observe algorithm is used to achieve the Maximum Power Point of the PV strings and its extension for the proposed topology is presented. Several simulations were carried out to demonstrate the suitability of the interleaved boost topology for PV applications.
{"title":"Interleaved boost converter for multi-string photovoltaic topologies","authors":"Daniel Apablaza, J. Muñoz","doi":"10.1109/ISGT-LA.2015.7381202","DOIUrl":"https://doi.org/10.1109/ISGT-LA.2015.7381202","url":null,"abstract":"An interleaved boost topology suitable for multistring photovoltaic topologies is presented in this paper. The presented topology allows to use independent and decoupled Maximum Power Point Tracking algorithms in order to optimize the use of the solar energy, especially for large PV farms, where the special location of the panels is distributed. The main features of an interleaved structures are presented and why they are adequate for connect several PV modules is explained. A basic Perturb and Observe algorithm is used to achieve the Maximum Power Point of the PV strings and its extension for the proposed topology is presented. Several simulations were carried out to demonstrate the suitability of the interleaved boost topology for PV applications.","PeriodicalId":345318,"journal":{"name":"2015 IEEE PES Innovative Smart Grid Technologies Latin America (ISGT LATAM)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131107780","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 : 2015-10-01DOI: 10.1109/ISGT-LA.2015.7381159
M. Ramirez, A. Escobar, A. Garcés
In this paper we describe an algorithm that involves linear programming (an exact optimization technique) and Monte Carlo Simulation for solving the middle-termed hydrothermal coordination. The proposed model considers uncertainties of wind and hydrology, as well as the effect of pump storage hydro-power units.
{"title":"Hydrothermal coordination considering wind and pumping storage unit in the Colombian smart grid","authors":"M. Ramirez, A. Escobar, A. Garcés","doi":"10.1109/ISGT-LA.2015.7381159","DOIUrl":"https://doi.org/10.1109/ISGT-LA.2015.7381159","url":null,"abstract":"In this paper we describe an algorithm that involves linear programming (an exact optimization technique) and Monte Carlo Simulation for solving the middle-termed hydrothermal coordination. The proposed model considers uncertainties of wind and hydrology, as well as the effect of pump storage hydro-power units.","PeriodicalId":345318,"journal":{"name":"2015 IEEE PES Innovative Smart Grid Technologies Latin America (ISGT LATAM)","volume":"169 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120985748","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 : 2015-10-01DOI: 10.1109/ISGT-LA.2015.7381198
Fernanda Avila, C. Cañizares, D. Śaez, F. Valencia
Demand side management (DSM) programs aim at reducing energy consumption on the demand side, which benefits both consumers and utilities. These programs could also help maintain the critical balance between generation and demand in isolated microgrids. In this case, demand is a treated as a significant uncertainty in the context of dispatching the power resources of a microgrid. Thus, in this paper the uncertainty of consumer response to DSM signals are treated as intervals to represent the corresponding range of variation based on affine arithmetic. The total range of total grid consumption is taken as the sum of intervals in each house, using data obtained through surveys regarding usage of appliances to obtain the individual consumer intervals. The proposed affine arithmetic model is then applied to the prediction of possible range variation in a one-day ahead load forecast. Finally, the presented technique is demonstrated using data obtained in an actual microgrid deployed in Huatacondo, Chile.
{"title":"Load modelling using affine arithmetic for demand side management","authors":"Fernanda Avila, C. Cañizares, D. Śaez, F. Valencia","doi":"10.1109/ISGT-LA.2015.7381198","DOIUrl":"https://doi.org/10.1109/ISGT-LA.2015.7381198","url":null,"abstract":"Demand side management (DSM) programs aim at reducing energy consumption on the demand side, which benefits both consumers and utilities. These programs could also help maintain the critical balance between generation and demand in isolated microgrids. In this case, demand is a treated as a significant uncertainty in the context of dispatching the power resources of a microgrid. Thus, in this paper the uncertainty of consumer response to DSM signals are treated as intervals to represent the corresponding range of variation based on affine arithmetic. The total range of total grid consumption is taken as the sum of intervals in each house, using data obtained through surveys regarding usage of appliances to obtain the individual consumer intervals. The proposed affine arithmetic model is then applied to the prediction of possible range variation in a one-day ahead load forecast. Finally, the presented technique is demonstrated using data obtained in an actual microgrid deployed in Huatacondo, Chile.","PeriodicalId":345318,"journal":{"name":"2015 IEEE PES Innovative Smart Grid Technologies Latin America (ISGT LATAM)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124066182","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 : 2015-10-01DOI: 10.1109/ISGT-LA.2015.7381168
W. Villamil, C. Rojas, S. Tellez, J. Rosero
The main purpose of this paper is to introduce the development of a simulation model in order to evaluate the impact of massive recharge of Electrical Vehicles (EVs) on distribution networks in Bogotá, Colombia, taking into account specific EVs user behavior scenarios. EVs recharge is characterized and represented by software models based on EVs test measures and existing distribution networks topologies. Impact evaluation includes observation of node voltages, regulation and transformers loadability. Results are obtained from the simulations reproducing the consequences of the inclusion of EVs charging points inside the systems. Finally, according to the information obtained, Demand Side Management (DSM) strategies regarding the inclusion of EVs in energy distribution systems are proposed.
{"title":"Energy demand impact due to mass use of Electrical Vehicles and future Demand Side Management strategies","authors":"W. Villamil, C. Rojas, S. Tellez, J. Rosero","doi":"10.1109/ISGT-LA.2015.7381168","DOIUrl":"https://doi.org/10.1109/ISGT-LA.2015.7381168","url":null,"abstract":"The main purpose of this paper is to introduce the development of a simulation model in order to evaluate the impact of massive recharge of Electrical Vehicles (EVs) on distribution networks in Bogotá, Colombia, taking into account specific EVs user behavior scenarios. EVs recharge is characterized and represented by software models based on EVs test measures and existing distribution networks topologies. Impact evaluation includes observation of node voltages, regulation and transformers loadability. Results are obtained from the simulations reproducing the consequences of the inclusion of EVs charging points inside the systems. Finally, according to the information obtained, Demand Side Management (DSM) strategies regarding the inclusion of EVs in energy distribution systems are proposed.","PeriodicalId":345318,"journal":{"name":"2015 IEEE PES Innovative Smart Grid Technologies Latin America (ISGT LATAM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129030461","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}
This paper proposes a way to promote wind energy in countries that have not developed a considerable percentage. To get results, a calculation methodology based on levelized cost of energy is proposed, and then an incentive through payment for firm energy of wind farms. By introducing forms of renewable generation, the system is diversified, resulting in a smarter electricity mix. At the end of the work, a case study is presented, with the results for a chosen scenario, where is possible to check the proposed methodology.
{"title":"A proposal to increase renewable generation to obtain a smarter electricity mix","authors":"Gustavo Camilo Rosero, Roberto Chouhy Leborgne, Cássio Bortolosso","doi":"10.1109/ISGT-LA.2015.7381163","DOIUrl":"https://doi.org/10.1109/ISGT-LA.2015.7381163","url":null,"abstract":"This paper proposes a way to promote wind energy in countries that have not developed a considerable percentage. To get results, a calculation methodology based on levelized cost of energy is proposed, and then an incentive through payment for firm energy of wind farms. By introducing forms of renewable generation, the system is diversified, resulting in a smarter electricity mix. At the end of the work, a case study is presented, with the results for a chosen scenario, where is possible to check the proposed methodology.","PeriodicalId":345318,"journal":{"name":"2015 IEEE PES Innovative Smart Grid Technologies Latin America (ISGT LATAM)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134001084","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 : 2015-10-01DOI: 10.1109/ISGT-LA.2015.7381144
Cesare Quinteiro Pica, M. A. Izumida Martins, Tania Nalborczyk Leites, Nilo Rodrigues
Sustainability of microgrids depends on a successful business model, enabling technology, and regulation policies. Technical challenges are still significant, but they can be divided and solved in diverse levels with application of existing technology in several ways. However, the regulatory context is vital to incentive microgrids integration into the electricity market. This article aims to explore and categorize different regulatory challenges existing nowadays in Brazilian scenario, in order to identify them, propose possible solutions and encourage investment in microgrids. The main conclusion is that, in general the regulatory environment in Brazil is adapting to include microgrids in the electric system. Though, some regulatory difficulties tend to be solved with the implementation of regulations relating to micro-generation that can be subsequently applied to microgrids and through benchmarking with international experiences from other countries.
{"title":"The regulatory challenge of integrating microgrids in the Brazilian context","authors":"Cesare Quinteiro Pica, M. A. Izumida Martins, Tania Nalborczyk Leites, Nilo Rodrigues","doi":"10.1109/ISGT-LA.2015.7381144","DOIUrl":"https://doi.org/10.1109/ISGT-LA.2015.7381144","url":null,"abstract":"Sustainability of microgrids depends on a successful business model, enabling technology, and regulation policies. Technical challenges are still significant, but they can be divided and solved in diverse levels with application of existing technology in several ways. However, the regulatory context is vital to incentive microgrids integration into the electricity market. This article aims to explore and categorize different regulatory challenges existing nowadays in Brazilian scenario, in order to identify them, propose possible solutions and encourage investment in microgrids. The main conclusion is that, in general the regulatory environment in Brazil is adapting to include microgrids in the electric system. Though, some regulatory difficulties tend to be solved with the implementation of regulations relating to micro-generation that can be subsequently applied to microgrids and through benchmarking with international experiences from other countries.","PeriodicalId":345318,"journal":{"name":"2015 IEEE PES Innovative Smart Grid Technologies Latin America (ISGT LATAM)","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133677463","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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