A. Perera, P. Wickramasinghe, J. Scartezzini, V. Nik
{"title":"Integrating Renewable Energy Technologies into Distributed Energy Systems Maintaining System Flexibility","authors":"A. Perera, P. Wickramasinghe, J. Scartezzini, V. Nik","doi":"10.1109/EFEA.2018.8617046","DOIUrl":"https://doi.org/10.1109/EFEA.2018.8617046","url":null,"abstract":"Flexibility of the energy system plays a vital role when integrating non-dispatchable renewable energy technologies. However, flexibility of the energy system has been often discussed only focusing on the operation of the energy system. This study extends the flexibility concept considering both design and operation of the energy system. In order to achieve this, pseudo chronological scenarios used for stochastic optimization is used to define system flexibility. Multiple criterions are considered when evaluating the flexibility of the system and fuzzy logic is used to consider the ambiguity in the assessment process when localizing into a specific application. Subsequently, multi objective optimization is conducted to design a multi-energy hub considering net present value (NPV), system flexibility and renewable energy generation. GPU-accelerated computing is introduced to speed up the computing when evaluating the objective functions for number of scenarios. Results of the study show that poor system flexibility can leads to poor utilization of renewable energy generated. More importantly, penetration levels of non-dispatchable renewable energy technologies notably reduce by 20–30% when considering the flexibility of the energy system which guarantees robust operation.","PeriodicalId":447143,"journal":{"name":"2018 5th International Symposium on Environment-Friendly Energies and Applications (EFEA)","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115059387","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":"Comparing Univariate and Multivariate Methods for Probabilistic Industrial Load Forecasting","authors":"A. Bracale, P. De Falco, G. Carpinelli","doi":"10.1109/EFEA.2018.8617111","DOIUrl":"https://doi.org/10.1109/EFEA.2018.8617111","url":null,"abstract":"Due to their large usage of electricity, industrial factories stand out from domestic and commercial utilities for the enormous potential in providing services to power systems. Accurate energy consumption forecasts are required in order to exploit this outstanding capability, without incurring into operational mistakes. In this context, system operators prefer probabilistic load forecasts when dealing with decision-making processes, in order to fully account economical and technical risks. This paper tackles probabilistic industrial load forecasting from a dual point of view: active and reactive power forecasting. The strong correlation between active and reactive powers suggests to develop the proposed forecasting method by modeling the interaction effects between the variables; we investigate the convenience of such approach using both univariate and multivariate methods, i.e., quantile regression forests and vector autoregressive exogenous models, trained with actual data registered in an Italian factory. The results are compared to a naïve benchmark and a regression bootstrap benchmark.","PeriodicalId":447143,"journal":{"name":"2018 5th International Symposium on Environment-Friendly Energies and Applications (EFEA)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128275944","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}
T. S. Cunden, A. Dhunny, M. R. Lollchund, S. Rughooputh
{"title":"Sensitivity Analysis of WRF Model for Wind Modelling Over a Complex Topography Under Extreme Weather Conditions","authors":"T. S. Cunden, A. Dhunny, M. R. Lollchund, S. Rughooputh","doi":"10.1109/EFEA.2018.8617050","DOIUrl":"https://doi.org/10.1109/EFEA.2018.8617050","url":null,"abstract":"The Weather Research and Forecasting (WRF) modelling system is used to generate high resolution wind speed maps. In order to optimise the WRF model, a sensitivity test is performed to determine the best combinations of physics to be used for simulating the climate topology over the Island of Mauritius using WRF. More specifically, this paper gives the details of the sensitivity tests and analyses that have been conducted on the Island of Mauritius. The model is tested for clear days as well as extreme weather conditions such as cyclone and anticyclone. The results of the sensitivity test are presented. The best combinations of physics options were found to be the microphysics option WSM5, Planetary Boundary Layer option MYJ and the Cumulus scheme KF.","PeriodicalId":447143,"journal":{"name":"2018 5th International Symposium on Environment-Friendly Energies and Applications (EFEA)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128857913","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}
S. Galantino, H. Skobue, M. H. Mikkelsen, Ilaria Colucci, R. Vignoli
{"title":"HV Line Supports Alternatives Comparison in Remote African Areas: A Specific Example in Zambia for the Lufubu Cascade Link to the National Grid","authors":"S. Galantino, H. Skobue, M. H. Mikkelsen, Ilaria Colucci, R. Vignoli","doi":"10.1109/EFEA.2018.8617112","DOIUrl":"https://doi.org/10.1109/EFEA.2018.8617112","url":null,"abstract":"The overhead transmission line design is one of the main services provided by SP. These transmission lines often cross areas situated far from the main centres of population. The Lufubu Cascade project in Zambia includes several overhead transmission lines (132 and 330kV). In this case, where preventing vandalism and unauthorised access is essential, the Design Pylon provides a superior alternative to the traditional lattice tower. During Lufubu transmission system design, SP has assessed the possibility of maximizing benefits of Pylons taking advantage from BYSTRUP's design by a “pros&cons” analysis with the specific purpose of minimizing vandalism acts to the line and O&M impact to investment costs.","PeriodicalId":447143,"journal":{"name":"2018 5th International Symposium on Environment-Friendly Energies and Applications (EFEA)","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126265899","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}
Louis Delannoy, Salil Puri, A. Perera, Silvia Coccolo, Dasaraden Mauree, J. Scartezzini
{"title":"Climate Impact and Energy Sustainability of Future European Neighborhoods","authors":"Louis Delannoy, Salil Puri, A. Perera, Silvia Coccolo, Dasaraden Mauree, J. Scartezzini","doi":"10.1109/EFEA.2018.8617066","DOIUrl":"https://doi.org/10.1109/EFEA.2018.8617066","url":null,"abstract":"This study presents a comprehensive analysis of typical European city centers energy demand and supply for present time and 2050, according to the Intergovernmental Panel for Climate Change (IPCC) climatic scenario A1B. Two multi-family houses are modeled, adapted and simulated considering local thermal characteristics and climate conditions of twenty-two European countries. An energy hub system is optimized in order to investigate how the micro-grid responds to the renewable energy integration for ten countries. The European heating demand is evaluated to be reduced by half by 2050 (49%) due to the climate change (6%) and refurbishment (43%) effects. Integration of renewable energy sources in most European countries is set to surpass the EU renewable energy targets given proper implementation of appropriate governmental polices coupled with emerging technological advancements in the renewable energy sector.","PeriodicalId":447143,"journal":{"name":"2018 5th International Symposium on Environment-Friendly Energies and Applications (EFEA)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124062285","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. Baggini, Nerea Ruiz Fuente, T. Jezdinsky, I. Weiss, Francisco R. Zuloaga, F. Bua
{"title":"A Methodology for Achieving Effective Market Surveillance of Power Transformers — INTAS Project","authors":"A. Baggini, Nerea Ruiz Fuente, T. Jezdinsky, I. Weiss, Francisco R. Zuloaga, F. Bua","doi":"10.1109/EFEA.2018.8617055","DOIUrl":"https://doi.org/10.1109/EFEA.2018.8617055","url":null,"abstract":"Market Surveillance Authorities (MSAs) and market actors face difficulties establishing and verifying compliance of large industrial products. The INTAS project is funded by the European Union Horizon 2020 Programme (EU H2020) to provide technical and cooperative support, as well as capacity building to MSAs targeting transformers which are subject to energy performance requirements under the Ecodesign Directive. In a first stage, the existing testing avenues, and explored test standards, procedures and methods already in place have been analyzed. Now, the project is defining an effective compliance framework for MSAs and manufacturers. Specifically, INTAS aims to: Support EU MSAs deliver compliance; Support industry on their obligations under the Ecodesign Directive and delivering compliance that will be broadly accepted by MSAs; Foster a common EU approach to delivery and verification of compliance. Focusing on the strengths and limitations of current industry practices, the final goal is to define recommendations on methodologies and required documentation.","PeriodicalId":447143,"journal":{"name":"2018 5th International Symposium on Environment-Friendly Energies and Applications (EFEA)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128034633","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":"Coach-ing, an Integrated System of Skills: Experimentation and Guided Validation","authors":"E. Santini, Viviana Callea, Roberta Tempone","doi":"10.1109/EFEA.2018.8617053","DOIUrl":"https://doi.org/10.1109/EFEA.2018.8617053","url":null,"abstract":"The Coach Ing model, applied to professionals in the engineering field, continues to be enriched through training experiments. After a careful evaluation of the results of the Coach-Ing path [1], this paper shows the results of a further experimentation performed in SAPIENZA — University of Rome. The experimentation was focused on the identification of a numerical evaluation technique of the skill level acquired by the students participating in the program. This was achieved through the guided validation of the set of 16 reference skills defined by the Coach-Ing model. During the training process a double level activity was carried out: on the one hand, the participants were taught about the possible working scenarios to which they could orientate themselves and, at the same time, assessed the personal strategies — observation and evaluation of the 16 parameters — more coherent to effectively propose itself in different working contexts. Further two steps (a unconventional final exam and a follow-up on the interview) integrated the students' training path and at the same time enriched the Coach-ing model with further reference indicators with communicative-relational indicators. The results of the complete experimentation confirm that the Coach-Ing model has excellent performances as a methodological lever within the training path. Moreover, the use of Mentor-Ing techniques allows to accompany the participants in the consolidation of the acquired skills.","PeriodicalId":447143,"journal":{"name":"2018 5th International Symposium on Environment-Friendly Energies and Applications (EFEA)","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127966901","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}
Abderezak Lashab, D. Sera, João Martins, J. Guerrero
{"title":"Multilevel DC-Link Converter-Based Photovoltaic System with Integrated Energy Storage","authors":"Abderezak Lashab, D. Sera, João Martins, J. Guerrero","doi":"10.1109/EFEA.2018.8617110","DOIUrl":"https://doi.org/10.1109/EFEA.2018.8617110","url":null,"abstract":"This paper presents a multilevel topology of photovoltaic (PV) system with integrated energy storage system (ESS). In this proposed topology, half of the cells are connected to PV panels, the rest are connected to batteries. The sum of the cells are connected in series to form a dc-link, which is then connected to an H-bridge to convert the dc voltage to an ac one. The advantage of the proposed topology compared to the modular multilevel converter (MMC) as well as compared to the cascaded H-bridge converter is that less active switches are needed here. More switches are saved as the level of the output voltage increases, which results to a cheaper and less sizable converter. A local maximum power point tracking (MPPT) algorithm is proposed for this converter, which requires the voltage and current of each sub-module. Hence, there are no losses related to partial shading effect here. The excess of power in case of high irradiation levels is stored in the batteries, and is recovered when needed. A detailed simulation program has been built to test the effectiveness of the proposed converter; the obtained results are shown in the paper.","PeriodicalId":447143,"journal":{"name":"2018 5th International Symposium on Environment-Friendly Energies and Applications (EFEA)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129635959","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}
R. Velichkova, I. Simova, D. Markov, Venelin Makakov, M. Uzunova, V. Schwanitz
{"title":"Utilzation of Wave Energy by Hybrid System","authors":"R. Velichkova, I. Simova, D. Markov, Venelin Makakov, M. Uzunova, V. Schwanitz","doi":"10.1109/EFEA.2018.8617056","DOIUrl":"https://doi.org/10.1109/EFEA.2018.8617056","url":null,"abstract":"In the presented study is given the investigation of the efficiency of the energy transformation of sea waves in mechanical energy through a type of a hybrid system with an air turbine and an water turbine with oscillating blades.","PeriodicalId":447143,"journal":{"name":"2018 5th International Symposium on Environment-Friendly Energies and Applications (EFEA)","volume":"1583 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121782986","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}
Vladimir Lojanica, Vesna-Mila Colic-Damjanovic, Novica Z. Janković
{"title":"Housing of the Future: Housing Design of the Fourth Industrial Revolution","authors":"Vladimir Lojanica, Vesna-Mila Colic-Damjanovic, Novica Z. Janković","doi":"10.1109/EFEA.2018.8617094","DOIUrl":"https://doi.org/10.1109/EFEA.2018.8617094","url":null,"abstract":"The housing problems of the 21st century that include continuous urbanization, overpopulation, pollution, energy deficiency, land shortage and lack of affordable housing cannot be solved by applying housing solutions of the 20th century. The paradigm shift initiated by the disruptive new technological development of the fourth industrial revolution is offering substitution to the conventional understanding of housing design, its production processes and radically change the way we live and work. This paper examines and describes new prospects, opportunities and limits of housing design by the use of innovative advanced 3D printing technologies with CAD/CAM systems that introduce new possibilities to the process of housing design, fabrication and construction. These new possibilities in housing design include research in form, function, structure and materials, and have profound influence on both architectural research design, its production process and significantly reduce overall investments, time and resources, materials and labour use, decrease pollution and energy use.","PeriodicalId":447143,"journal":{"name":"2018 5th International Symposium on Environment-Friendly Energies and Applications (EFEA)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127950045","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}