International Journal of Smart Grid and Clean Energy最新文献

{"title":"Statistical analysis of wind characteristic in Yanco agricultural institute, Australia","authors":"Nour Khlaifat, A. Altaee, John L. Zhou","doi":"10.12720/SGCE.10.1.1-7","DOIUrl":"https://doi.org/10.12720/SGCE.10.1.1-7","url":null,"abstract":"In this study, energy potential and the wind speed characteristics in Yanco agricultural institute in southwestern New South Wales (Australia) were investigated using wind speed from database at a height of 10 m during the period of April 2018 until August 2019. The objective of this study is to assess the wind speed profile using different probability distribution functions in order to evaluate the most suitable function depending on statistical indicators. The performance of Gamma, Lognormal, Rayleigh, and Weibull were compared with measured data. Results showed that the most accurate function is the Weibull distribution and hence it is used to calculate the wind power density. The annual average wind power is 43.404 W/m at an elevation of 10 m. The power-law exponent equation was utilized to create the variations of monthly mean wind speed at the heights of 40 m and 50 m. Finally, wind rose diagram showed that an even distribution of wind direction although the most prevailing wind direction falls between 180° and 240°.","PeriodicalId":247617,"journal":{"name":"International Journal of Smart Grid and Clean Energy","volume":"24 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":"115151966","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":"Optimal sizing of a networked microgrid using Nash equilibrium for mount magnet","authors":"Liaqat Ali, H. Bizhani, S. Muyeen, A. Ghosh","doi":"10.12720/SGCE.9.1.82-90","DOIUrl":"https://doi.org/10.12720/SGCE.9.1.82-90","url":null,"abstract":"In this paper, a technique of game theory is proposed based on a multi-objective imperialistic competition algorithm (ICA) for system optimization in order to design a networked microgrid in grid-connected mode. The selected networked microgrid, which consists of two different grid-connected microgrids with common load and grid, might have different combinations of generation resources including wind turbine, photovoltaic panels and batteries. To perform the effective sizing of networked microgrid, a Nash equilibrium based game theory is developed in which the rating of the generation systems is considered as players and annual profit as payoff. Moreover, in order to meet the equilibrium point and find the optimum sizes of generation resources in different coalitions between players, ICA, which is being frequently used in optimization applications, is implemented using MATLAB software. Finally, in order to validate the results, the sensitivity analysis is studied to examine the impact of electricity price and discount rates.","PeriodicalId":247617,"journal":{"name":"International Journal of Smart Grid and Clean Energy","volume":"40 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":"123152630","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":"On-Line Monitoring of Cable Trench and Cable Pit by Using Metal Armored FBG Temperature Sensors","authors":"Zhen Wang, M. Cao, Dada Wang, S. Zhang, Chuan Li, Ying Na Li, Xiao Long Li","doi":"10.12720/SGCE.2.1.119-124","DOIUrl":"https://doi.org/10.12720/SGCE.2.1.119-124","url":null,"abstract":"Substation cable trench and cable pit lay many cables, which are used to connect electrical equipment. The longrunning of cable will probably cause insulation material aging, leakage sparking and local overheating occur, which eventually lead to a cable fire, the temperature of cable surface usually reflected the situation of the cable. Metal armored fiber Bragg grating temperature sensor are applying in a substation cable trench and cable pit, with four fiber trench it monitor the 60 cable temperature measuring point in current time. The 24-hours real-time monitoring indicates that the temperature of morning is the minimum, and the temperature of afternoon is the maximum. The temperature of cable surface ranges in the similar curve with ambient temperature. In the long-term of 479 days, the minimum of the average daily temperature range of 60 sensors is 21.24℃,detected at number 9 trench 1, The maximum is 37.43℃,detected at number 4 trench 2, which reached its maximum temperature 43.41℃ on July 3, 2010, and the minimum temperature is 4.37℃ on January 17, 2011,number 13 trench 1. The temperature of sensors changed in the same trend with seasons.","PeriodicalId":247617,"journal":{"name":"International Journal of Smart Grid and Clean Energy","volume":"215 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":"123159048","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":"Semiconductor Devices of Wind Power Converter and Its Control","authors":"Jiancheng Yang, Xinghua Fu, Shuanghong Xue","doi":"10.12720/SGCE.2.2.208-214","DOIUrl":"https://doi.org/10.12720/SGCE.2.2.208-214","url":null,"abstract":"For large power wind turbines, large-signal disturbance in wind power converter require a sufficiently large stability region around the quiescent values. The nonlinear and uncertain variations in power converter lead the control difficulty. In this paper, we will discuss the control strategy and 3 hierarchies in Power Electronic Building Blocks (PEBBs) after analyzing non-linear and uncertain variation of power semiconductor devices. A potential function based Lyapunov function will be introduced.","PeriodicalId":247617,"journal":{"name":"International Journal of Smart Grid and Clean Energy","volume":"100 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":"115823074","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 investigation impact of variable installed capacity wind farm on the power system","authors":"Kanthanachuck Vorabout, C. Surawanitkun, A. Kaewrawang","doi":"10.12720/SGCE.9.5.890-900","DOIUrl":"https://doi.org/10.12720/SGCE.9.5.890-900","url":null,"abstract":"Penetration of wind power generation into the power system has greatly affected the electrical power system because the increment of installed capacity of wind farms (WFs) causes the variable power flow in the system. This paper presents assessment of an electrical effects depending on the installed capacity of WFs. Firstly, a scenario is analysed power system before and after WFs connected into power system of the Central II-part of Lao PDR by DIgSILENT power factory software. Secondly, the installed capacity WFs is inserted into simulation with the two located. The propose of this study is comparative the result of electrical effects based on the ratio installed WFs each location. It has been demonstrated variable power flow and current flow into substations on the power transmission. In addition, the result shown limited performance of installed WFs power generation in the system. The outcome of a novel scenario is considering the power system to determine an electrical effect when the increment installed capacity of power generation also that is a planning extension of power generation in the Central II part, Lao PDR.","PeriodicalId":247617,"journal":{"name":"International Journal of Smart Grid and Clean Energy","volume":"17 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":"116888505","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":"Wind/PV/storage independent system capacity configuration model and scheduling policy analysis","authors":"Linjing Hu, D. Xi, Sasa Guo, Yanjie Fu","doi":"10.12720/SGCE.3.1.37-44","DOIUrl":"https://doi.org/10.12720/SGCE.3.1.37-44","url":null,"abstract":"Wind/PV/storage system has the advantages of good power supply performance, few geographical limitations, and reasonable investment in equipment, and gradually becomes the priority project of developing independent wind power system preference in most remote areas. Based on the analysis of the constraint conditions of wind/PV/storage independent system, this paper discusses the capacity configuration model, process and strategies of wind/PV/storage independent system in detail, and considers practical solutions to power supply requirements in local areas without electricity, at the same time, it provides technology and practical basis for solving the key technical issues of independent power grid construction in remote areas.","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":"121233658","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":"Dynamic state estimation for distribution networks with renewable energy integration","authors":"H. Nguyen, G. Venayagamoorthy, W. Kling, P. Ribeiro","doi":"10.12720/SGCE.2.3.307-315","DOIUrl":"https://doi.org/10.12720/SGCE.2.3.307-315","url":null,"abstract":"The massive integration of variable and unpredictable Renewable Energy Sources (RES) and new types of load consumptions increases the dynamic and uncertain nature of the electricity grid. Emerging interests have focused on improving the monitoring capabilities of network operators so that they can have accurate insight into a network’s status at the right moment and predict its future trends. Though state estimation is crucial for this purpose to trigger control functions, it has been used mainly for steady-state analysis. The need for dynamic state estimation (DSE), however, is increasing for real-time control and operation. This paper addresses the important role of DSE over conventional static-state estimation in this new distribution network context. Computational burden mitigates the state-of-the-art utilizations of DSE in real large-scale networks, although DSE was introduced several decades ago. This paper the unscented Kalman filter (UKF) to alleviate computational burden with DSE. The UKF-based approach does not use a linearization procedure and thus outperforms the conventional Extended Kalman Filter based approach to cope with non-linear models. The performance of the UKF method is investigated with a simulation of an 18-bus distribution network on the real-time digital simulator (RTDS) platform. A distribution network with considerable integration of renewable energy production is used to evaluate the UKF-based DSE approach under different types of events.","PeriodicalId":247617,"journal":{"name":"International Journal of Smart Grid and Clean Energy","volume":"98 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":"127098943","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":"Renewable, local electricity generation from palm oil mill residues : a case study from Peninsular Malaysia.","authors":"Jaye, Ida Fahani","doi":"10.12720/SGCE.5.2.106-111","DOIUrl":"https://doi.org/10.12720/SGCE.5.2.106-111","url":null,"abstract":"The potential for generating renewable electricity from palm oil mill residues (POMR) has received policy support from the Malaysian Government for almost two decades. However, uptake of the technology is still relatively low. A significant issue dominating the discussion for many years is how to translate the renewable electricity generation potential from POMR into actual implementation. The research seeks to understand the opportunities and barriers for the use of POMR for a Renewable Electricity System (POMR-RES) in Peninsular Malaysia by assessing the technical, techno-economic and environmental feasibility of generating renewable electricity from palm oil mill residues focusing mainly on empty fruit bunches (EFB) and biogas. A combination of mathematical analysis and simulation using Aspen PlusTM software was employed to assess the technical feasibility of the system. Techno-economic analysis was combined with Life Cycle Assessment (LCA) to integrate the environmental impact perspective into the POMR-RES evaluation. The results show that EFB has better technical and techno-economic performance than the biogas. Furthermore, the on-site POMR-RES with an installed capacity of 5.70 MW or greater is technically feasible, economically viable and environmentally favourable. The electricity generated from a POMR-RES of this scale is sufficient to meet a mill’s operational electricity demand, the parasitic load of the POMR-RES and provide surplus electricity to the national grid. An economically feasible size POMR-RES are expected to provide: 1. a 20% return on investment (ROI) with five to seven-year payback period (PP). 2. a positive net present value (NPV) with break-even point (BEP) of five to seven-year. The electricity generated in POMR-RES emits 95% less GHG emissions compared with current Malaysian electricity grid average when the emission from LUC is excluded from the electricity generation process. Thirty-five mills in Peninsular Malaysia were identified as having sufficient EFB supply to operate at or above this economically feasible size with the total accumulated generation capacity of 200 MW. This accumulated capacity would account for 25% of the 2020 target for palm oil biomass under National Renewable Energy Policy and Action Plan. This research provides a positive case for generating local, renewable electricity from EFB that can be used as evidence and practical recommendations for various actors such as prospective investors, analysts, stakeholders, mill owners and policymakers and government agencies such as the Sustainable Energy Development Authority Malaysia (SEDA) for efficient and sustainable utilization of POMR. This study also makes a positive contribution towards achieving the national renewable energy target for additional renewable power supplies and as a contribution towards improved global sustainability.","PeriodicalId":247617,"journal":{"name":"International Journal of Smart Grid and Clean Energy","volume":"16 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":"125169203","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":"Calculation and analysis of electron transport coefficients in BF3-N2 and TMS-N2 gas mixtures","authors":"Phan Thi Tuoi, Pham Xuan Hien, Trần Thanh Sơn, Do Anh Tuan","doi":"10.12720/SGCE.6.2.77-83","DOIUrl":"https://doi.org/10.12720/SGCE.6.2.77-83","url":null,"abstract":"","PeriodicalId":247617,"journal":{"name":"International Journal of Smart Grid and Clean Energy","volume":"30 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":"125962062","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 performance analysis of organic rankine cycles combined CCHP system","authors":"Tong Zhu, Tao Zhang, N. Gao","doi":"10.12720/SGCE.5.1.1-8","DOIUrl":"https://doi.org/10.12720/SGCE.5.1.1-8","url":null,"abstract":"In the past few years, Distributed Energy Resources (DER) have been received increasing attention all over the world, on the account of benefits in environment and economy as an energy system. Combined Cooling, Heating, and Power (CCHP) system as a general DER mode is an effective solution to save energy and reduce the pollution, while ORC (Organic Rankine Cycle) is an effective means to Recovery of waste heat power generation. In this paper, a new system combined CCHP and ORC is described. A Non-Liner Programming (NLP) model is established to optimize the equipment like Internal Combustion Engine (ICE), heat recovery system, gas boiler, absorption chiller, heat exchangers and ORC system. The economic efficiency, energy efficiency, environmental benefits are taken into account. Because the ORC system is not mature, a discussion about the changing of ORC system price is made. The result shows the price of ORC has dramatic influence to the capacity of ORC in the combined system. But it has little influence to other equipment capacity. Added an ORC system to CCHP is more environmentally friendly.","PeriodicalId":247617,"journal":{"name":"International Journal of Smart Grid and Clean Energy","volume":"77 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":"123257933","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}