{"title":"A case study on the implementation environment of Korea’s energy-independent island projects","authors":"Chankook Park","doi":"10.12720/sgce.11.1.14-28","DOIUrl":"https://doi.org/10.12720/sgce.11.1.14-28","url":null,"abstract":"Efforts to build an energy-independent island (EII) have been made in island territories all over the world out of concerns for energy security and the environment. Likewise, EII projects on six islands have been proceeding in Korea since 2014. Korea’s EII projects are differentiated from those of other countries in that they have been implemented in a private investment-centric manner. However, it is said that the performance of EII projects over the past years has been inadequate. Hence, this study seeks to identify the problems of Korea’s EII projects and to suggest the directions for improvement. This study is primarily based on a literature review. We collected the literature from Science Direct, Google Scholar, and DBpia. In addition, this study draws on a number of other secondary sources. We have identified major challenges such as resolving business uncertainties, enhancing residents’ acceptance, and securing advanced microgrid technology. The most important issue for operators is the unit price of electricity per kWh because it is directly linked to profits, but until now it is not easy to accurately calculate it. Efforts to enhance the acceptance by local residents also needs to be pursued in a balanced manner. In order to ensure a stable supply of electricity through renewable energies, it is important to improve the technology for the microgrid system and to make distributed energy resources in the system be connected organically.","PeriodicalId":247617,"journal":{"name":"International Journal of Smart Grid and Clean Energy","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127744986","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. Enomoto, S. Aida, S. Iwamoto, S. Osaki, N. Ariyoshi, K. Shimomura
{"title":"Generator output and static capacitor control considering voltage stability for large penetration of photovoltaic power","authors":"A. Enomoto, S. Aida, S. Iwamoto, S. Osaki, N. Ariyoshi, K. Shimomura","doi":"10.12720/SGCE.3.1.57-63","DOIUrl":"https://doi.org/10.12720/SGCE.3.1.57-63","url":null,"abstract":"In Japan, the introduction of large capacity of clean energy such as PV (photovoltaic power generation) is planned to reduce environmental burdens. The Japanese government has set the target of 53 GW of PV by 2030. However, large penetration of PV will cause several problems in power systems. One of these problems is that voltage values increase with the amount of PV penetration. Thus, we focus our attention on the upper voltage limit for a large penetration of PV in terms of voltage stability. In this paper, we consider a smart generator output and static capacitor control for the large penetration of PV. For the generator output control we propose to use the optimal power flow in terms of minimizing bus voltage deviations from the prescribed values. Simulations are run using the IEEJ WEST 10-machine O/V system model to confirm the validity of the proposed method.","PeriodicalId":247617,"journal":{"name":"International Journal of Smart Grid and Clean Energy","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125724594","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":"Experimental investigation and theoretical for the performance improvement of MPPT technique with PV systems connected to the grid","authors":"S. Abdelwahab, H. Hegazy, Wael I. Mohamed","doi":"10.12720/sgce.10.4.253-269","DOIUrl":"https://doi.org/10.12720/sgce.10.4.253-269","url":null,"abstract":"Many researchers have provided theoretical analysis of photoelectric (PV) energy systems connected to the electrical grid. This paper is concerned with experimental preparation in order to validate more and remains a major challenge in the field of practical research. In addition, the biggest problem with the PV energy system is how to get the utmost value out of the energy under a changing solar radiation. To take full power of the PV array output energy dependent on the change in solar radiation, Maximum Power Point Tracking (MPPT) techniques are used in the PV systems. The experimental and theoretical application of MPPT technology for grid connected PV system is suggested. This is done to track maximum energy under rapidly changing weather conditions in two states of PV radiation changes: the change of solar radiation in ramp profile and the width under change step. This article introduces the MPPT of a grid-connected PV system as a simulation and experimentally to track the speed of PV radiation change in different operating conditions. Through the results, an increase and correspondence in the output energy is shown using the MPPT technology between the experimental and theoretical side. Simulation results show the feasibility and power of control systems. Finally, a simulation result was compared with the experimental results for energy, current, and voltage coming out of the PV array as well as the electrical grid.","PeriodicalId":247617,"journal":{"name":"International Journal of Smart Grid and Clean Energy","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125784512","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 of Parallel Computation for the Whole Scene Test in Power System","authors":"Shi Jing, Qi Huang, Jianbo Yi","doi":"10.12720/SGCE.2.1.67-73","DOIUrl":"https://doi.org/10.12720/SGCE.2.1.67-73","url":null,"abstract":"In this paper, design and implementation of a new parallel computing method based on CUDA (Compute Unified Device Architecture) platform is described in detail. The method includes algorithm of matrix fraction and partial LU decomposition that are used to support parallel computing for simulation of the whole scene test in power system. The paper describes all the steps of algorithm implementation for deploying the software with CUDA technology. And performances are evaluated by test, in which two Jacobi matrix equations of power flow calculation with different dimension are selected as the test case. The results are compared with that of serial computing and MPI (Message Passing Interface). The results show that the method proposed in this paper has better performance of acceleration on CUDA platform, which can support the simulation of the whole scene test on wide-area power grid.","PeriodicalId":247617,"journal":{"name":"International Journal of Smart Grid and Clean Energy","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122007603","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":"Implementation of an Embedded Controlled High Efficiency Improved Boost Converter for Solar Installation System","authors":"A. Kalirasu, S. Dash","doi":"10.12720/SGCE.2.2.177-183","DOIUrl":"https://doi.org/10.12720/SGCE.2.2.177-183","url":null,"abstract":"Nowadays solar power generation is considered the best one compared to the conventional power generation system because it is clean and does not emit hard gases to the environment. This paper proposes a new topology for photovoltaic DC to DC converter with high gain and efficiency under wide input voltage range. The topology study of open loop and closed loop systems with high gain step-up conversion and step increase in input voltage are proposed. An improved DC to DC boost converter is modelled and simulated using matlab and it is implemented using embedded controller. This converter provides the constant output voltage irrespective of the PV panel output and load. The simulation and experimental results of this system are presented and compared. The performance of the converter is also compared with the conventional boost converter. This comparison reveals that the proposed converter system has the advantages of high gain and high efficiency with the minimum number of components.","PeriodicalId":247617,"journal":{"name":"International Journal of Smart Grid and Clean Energy","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127960323","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}
Mostafa M. S. Ahmed, A. Abdel-Rahman, M. Bady, Essam K. Mahrous, Masaaki Suzuki
{"title":"Optimum energy consumption by using kinetic shading system for residential buildings in hot arid areas","authors":"Mostafa M. S. Ahmed, A. Abdel-Rahman, M. Bady, Essam K. Mahrous, Masaaki Suzuki","doi":"10.12720/SGCE.5.2.121-128","DOIUrl":"https://doi.org/10.12720/SGCE.5.2.121-128","url":null,"abstract":"In the last decades, development of innovative solutions is considered as a prominent issue for achieving sustainability within the built environment. Facades are crucial to energy consumption and comfort within buildings. Incorporating intelligence in their design is an effective way to minimize energy consumption buildings. The ability of specific facade systems to work reliably and effectively is one of the challenges toward sustainable buildings environment. One of the most important methods of saving energy in a building is by carefully designing its facade. A ‘kinetic facade’ can be considered as an optimally one of the best options in managing the interaction between the outdoors and the internal spaces. It also provides some architectural flexibility to the design. Kinetic Façade building is one of the available energy conservation opportunities through recent intelligent buildings. This paper reports the results of using a new intelligent kinetic shading system to investigate how it can improve the internal conditions and decrease the energy consumption within residential building in hot arid areas. Finally, the results of the case study show that monthly adaptation of kinetic shading facade system can lead to improved and decreased the internal temperature of the building about 4-5 degree Celsius and 18-20% energy savings compared to the normal building without shading system.","PeriodicalId":247617,"journal":{"name":"International Journal of Smart Grid and Clean Energy","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115860817","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}
Jinfeng Zhang, Adu Daniela, Yujian Fang, Appiah Desmonda, Eric O. Antwi
{"title":"Review on China’s renewable energy and future projections","authors":"Jinfeng Zhang, Adu Daniela, Yujian Fang, Appiah Desmonda, Eric O. Antwi","doi":"10.12720/SGCE.7.3.218-224","DOIUrl":"https://doi.org/10.12720/SGCE.7.3.218-224","url":null,"abstract":"","PeriodicalId":247617,"journal":{"name":"International Journal of Smart Grid and Clean Energy","volume":"4 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113963032","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":"Perovskite solar cells: A promising technology","authors":"K. Zazi, Youssef Barradi, M. Zazi, Zazoui Mimoun","doi":"10.12720/sgce.11.2.92-98","DOIUrl":"https://doi.org/10.12720/sgce.11.2.92-98","url":null,"abstract":"Perovskite solar cells represent an emerging revolutionary photovoltaics technology. Rapid progress was driven in large part by improvements in solar cell and module efficiencies, reduction in manufacturing costs and the realization of levelized costs of electricity that are now generally less than other energy sources and approaching similar costs with storage included. This paper gives an approach to this research which has revolutionized the world of photovoltaics and addresses the various technological advances in order to increase the stability and efficiency of perovskite cells.","PeriodicalId":247617,"journal":{"name":"International Journal of Smart Grid and Clean Energy","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131925575","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":"Welfare maximization under a three-choice minority game model for energy demand allocation","authors":"C. A. Montes, A. Valdez","doi":"10.12720/SGCE.9.1.212-217","DOIUrl":"https://doi.org/10.12720/SGCE.9.1.212-217","url":null,"abstract":"Microgrids have been increasingly researched as a promising solution for providing energy to off-grid rural communities. Among the challenges of deploying microgrids to these communities is the problem of developing simple demand management schemes so that peaks and troughs in the consumers’ load demand can be minimized. A usual demand management scheme involves awarding consumers who utilize energy at times of low demand and penalizing those who utilize energy at times of high demand. Such schemes, however, may not always maximize user welfare. In this work, welfare analysis for a three time-window scheme for a simple microgrid is conducted. The study investigates whether ideal agent distributions that maximize social welfare across these time windows of energy usage can be computed assuming homogeneous agent utility and linear costs. A three-choice minority game was then developed as an allocation scheme for the grid. The game was simulated to determine whether these ideal agent distributions can be achieved within the game. Simulation results show that agent attendances over time approach the ideal agent distributions for some penalization schemes. The developed model therefore has a promising potential to be applied as a demand management scheme.","PeriodicalId":247617,"journal":{"name":"International Journal of Smart Grid and Clean Energy","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131984466","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. Sajadi, S. S. Sebtahmadi, M. Koniak, P. Biczel, S. Mekhilef
{"title":"Distributed Control Scheme for Voltage Regulation in Smart Grids","authors":"A. Sajadi, S. S. Sebtahmadi, M. Koniak, P. Biczel, S. Mekhilef","doi":"10.12720/SGCE.1.1.53-59","DOIUrl":"https://doi.org/10.12720/SGCE.1.1.53-59","url":null,"abstract":"The current uncertainty about oil and gas prices and their resources, and future energy concerns, smart grids lead to further development. In this paper, a two way communication-based distributed control for voltage regulation in smart grid is proposed. Moreover, 16-bus distribution feeders system is modeled by real time simulation in MATLAB/Simulink in order to evaluate the effectiveness of the proposed scheme. The results are evidence for capability of proposed system to regulate the voltage in smart distribution feeders.","PeriodicalId":247617,"journal":{"name":"International Journal of Smart Grid and Clean Energy","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129980272","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}