International Journal of Smart Grid and Clean Energy最新文献_第5页

Sizing and operation of pumped hydro storage for isolated microgrids 孤立微电网抽水蓄能的规模和运行

International Journal of Smart Grid and Clean Energy Pub Date : 1900-01-01 DOI: 10.12720/SGCE.9.4.756-767

R. Ahshan, M. Iqbal

{"title":"Sizing and operation of pumped hydro storage for isolated microgrids","authors":"R. Ahshan, M. Iqbal","doi":"10.12720/SGCE.9.4.756-767","DOIUrl":"https://doi.org/10.12720/SGCE.9.4.756-767","url":null,"abstract":"Energy storage has an effective role on establishing isolated microgrids (MGs) that contain intermittent renewable energy sources. Energy storages depending upon their technologies can ensure stable and reliable operation, control, and resiliency of the MGs. Therefore, it is indispensable to study MGs operation using appropriate, cost effective and sustainable energy storages along with necessary control. In this paper, sizing, operation and control of a suitable energy storage method for a case study MG system is presented. Due to the excellent geographical location of the case study MG system, a pumped hydro storage is selected; and the sizing of this storage unit is provided using mathematical models that is based on the system physical dimension. In addition, governor-excitation control based on power-frequency droop is designed for the pumped hydro storage unit. The controller performance is tested under various load changes in the MG and the results are presented to show the effectiveness of the designed controller. The performance of the MG frequency and the voltage at the MG bus under load disturbances indicate that the proposed pumped hydro storage is capable to maintain stable operation of the study MG system. Sizing outcomes and performance analysis of the designed controller have been carried out using MATLAB/Simulink software package.","PeriodicalId":247617,"journal":{"name":"International Journal of Smart Grid and Clean Energy","volume":"19 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":"124682841","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}

引用次数: 3

A Comparative Study on Methods of Connecting Large-Scale Offshore Wind Farms into Power Systems 大型海上风电场接入电力系统方法的比较研究

International Journal of Smart Grid and Clean Energy Pub Date : 1900-01-01 DOI: 10.12720/SGCE.2.2.237-243

Yuan-Kang Wu, Ching-Yin Lee, Jianhua Pan

{"title":"A Comparative Study on Methods of Connecting Large-Scale Offshore Wind Farms into Power Systems","authors":"Yuan-Kang Wu, Ching-Yin Lee, Jianhua Pan","doi":"10.12720/SGCE.2.2.237-243","DOIUrl":"https://doi.org/10.12720/SGCE.2.2.237-243","url":null,"abstract":"The paper uses PSS/E software to study connecting an offshore wind farm with 864 MW into the 2015 Taiwan power system. Major simulation works include: steady-state power flow, fault current computation, transient stability analysis and the impact analysis on critical fault clearing time. Three connection methods, i.e., single-point, separatepoint and multi-point connection, are proposed, in which the single-point connection is divided into two voltage levels (161kV and 345kV). During the steady-state operation, simulation results indicate that the 345 kV single-point connection method demonstrates the best performance. In addition, the fault current from a wind farm is partially determined by its connection location. In terms of transient stability, when grid faults take place, the 161kV singlepoint connection method appears to report the smallest voltage drop as compared to other connection scenarios. Its amplitude of frequency disturbance, however, is the greatest of all connection scenarios. As for the analysis on critical fault clearing time, simulation results indicate that the critical fault clearing time in all connection cases is approximately two times greater than that required by the Taipower standard. Simulation results in this study can be expected to provide valuable guidelines for connecting offshore wind farms into the power systems in the future.","PeriodicalId":247617,"journal":{"name":"International Journal of Smart Grid and Clean Energy","volume":"6 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":"126669316","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}

引用次数: 1

Investigation on SOC Estimation Algorithms for VRFB VRFB SOC估计算法研究

International Journal of Smart Grid and Clean Energy Pub Date : 1900-01-01 DOI: 10.12720/SGCE.10.2.162-166

Chao Ma

引用次数: 2

Three-phase unbalanced compensation and its application in transformer region based on Wang's theorem 基于王氏定理的三相不平衡补偿及其在变压器区的应用

International Journal of Smart Grid and Clean Energy Pub Date : 1900-01-01 DOI: 10.12720/sgce.8.5.574-579

Baoxuan Ye, Yuwu Wu, Bingzhang Tong, Kangjian Wang, Luqing Wang, Xiang-min Huang

引用次数: 0

A game theory approach with dynamic pricing to optimize smart grid operation 基于博弈论的智能电网动态定价优化方法

International Journal of Smart Grid and Clean Energy Pub Date : 1900-01-01 DOI: 10.12720/SGCE.4.3.186-198

Makhlouf Hadji, M. Girod-Genet, H. Affifi

{"title":"A game theory approach with dynamic pricing to optimize smart grid operation","authors":"Makhlouf Hadji, M. Girod-Genet, H. Affifi","doi":"10.12720/SGCE.4.3.186-198","DOIUrl":"https://doi.org/10.12720/SGCE.4.3.186-198","url":null,"abstract":"Abstract Smart Grids components include scalable metering, energy prediction (both production and consumption) and pricing. One of their goals consists to attract consumers to use green energy, to promote periods of low consumption and to dissuade customers from using their greedy devices during peak periods. The objective consists to determine the optimal suggested prices by the energy operator and the optimal demands of consumers. In this paper, we propose a theoretical model based on Stackelberg game to adjust prices of green energy. The proposed game is composed by a leader represented by the operator, and multiple followers represented by consumers. A Nash/Stackelberg equilibrium solution is found. Performance results confirm the uniqueness of Nash equilibrium and that a \"best reply\" dynamics for the repeated game converges to this equilibrium. Keywords: Smart grids, game theory, optimization, dynamic pricing 1. Introduction To meet the future power demand and the aim to reduce 𝐶�2 emissions designers of the next generation of electric power, distribution grid initiate a large research and technological action under the \"Smart Grid\" banner that starts to tackle some of the following issues:","PeriodicalId":247617,"journal":{"name":"International Journal of Smart Grid and Clean Energy","volume":"4 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":"129143577","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}

引用次数: 3

Effect of fermentation on the acetate-dominated rumen microbial fuel cells 发酵对醋酸盐为主的瘤胃微生物燃料电池的影响

International Journal of Smart Grid and Clean Energy Pub Date : 1900-01-01 DOI: 10.12720/SGCE.5.2.100-105

Chin‐Tsan Wang, Yao-Cheng Lee, Chengjian Yang, Zih-Sheng Chen, Yung‐Chin Yang

{"title":"Effect of fermentation on the acetate-dominated rumen microbial fuel cells","authors":"Chin‐Tsan Wang, Yao-Cheng Lee, Chengjian Yang, Zih-Sheng Chen, Yung‐Chin Yang","doi":"10.12720/SGCE.5.2.100-105","DOIUrl":"https://doi.org/10.12720/SGCE.5.2.100-105","url":null,"abstract":"Converting renewable biomass into electricity by the use of microbial fuel cells (MFCs) can produce clean and transportable energy. The performance of MFCs has been extensively evaluated on laboratory scales [1]. Thus far, electron suppliers for MFCs have been primarily limited to those soluble and rapidly metabolized organic compounds such as simple carbohydrates [2], [3], small organic acids [3], [4], starch [5], and amino acids [6]. Plant fiber carbohydrates, including waste from agricultural and industrial activity, are the most abundant and renewable biomass on Earth [7]. MFCs offer an opportunity to treat fibrous waste, such as straw, to concurrently generate electricity without the competition of food by humans and animals. In contrast to the non-fiber substrates mentioned above, plant fiber is relatively insoluble and is a large polymer with a diverse and complex structure [8]. Consequently, the biodegradation of fiber, coupled with the electrical output from MFCs, requires the collaborative actions of various microorganisms. In the rumen of ruminants there resides numerous symbiotic microorganisms, consisting of bacteria, protozoa, and fungi. By processing various enzymes, the microorganisms efficiently degrade plant fiber under anaerobic conditions [9], [10] with volatile fatty acids, such as acetate, propionate and butyrate, being produced in the process. During microbial fermentation of organic matter in the rumen a reducing equivalent is produced, which is accompanied by the release and translocation of protons and electrons [11]. These products could theoretically be transformed into","PeriodicalId":247617,"journal":{"name":"International Journal of Smart Grid and Clean Energy","volume":"28 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":"129295619","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}

引用次数: 1

Effect of solar cell structure on the radiation resistance of an InP solar cell 太阳能电池结构对InP太阳能电池抗辐射性能的影响

International Journal of Smart Grid and Clean Energy Pub Date : 1900-01-01 DOI: 10.1051/e3sconf/202019101005

H. Mazouz, A. Belghachi, P. Logerais

引用次数: 0

Optimum condition of biodiesel production from waste cooking oil using continuous stirred tank reactor 连续搅拌槽式反应器利用废食用油生产生物柴油的最佳工艺条件

International Journal of Smart Grid and Clean Energy Pub Date : 1900-01-01 DOI: 10.12720/sgce.8.2.201-205

Erna Astuti, Zahrul Mufrodia

引用次数: 5

A study of photovoltaic thermal (PV/T) hybrid system with computer modeling 光伏热(PV/T)混合系统的计算机建模研究

International Journal of Smart Grid and Clean Energy Pub Date : 1900-01-01 DOI: 10.12720/SGCE.3.1.75-79

Chao-Yang Huang, Chiou-Jye Huang

引用次数: 18

An opportunity of new biomass materials as renewable energy in Thailand: perspective of coconut farmer 泰国新生物质材料作为可再生能源的机会:椰农的观点

International Journal of Smart Grid and Clean Energy Pub Date : 1900-01-01 DOI: 10.12720/sgce.8.5.586-591

P. Ninduangdee, K. Boonrod, Yupin Yuenyong, Awassada Phongphipat

{"title":"An opportunity of new biomass materials as renewable energy in Thailand: perspective of coconut farmer","authors":"P. Ninduangdee, K. Boonrod, Yupin Yuenyong, Awassada Phongphipat","doi":"10.12720/sgce.8.5.586-591","DOIUrl":"https://doi.org/10.12720/sgce.8.5.586-591","url":null,"abstract":"This survey research aimed at examining perspective of coconut farmers on a feasibility of using biomass materials from coconut plantations for energy production. This research employed the Cochran Method to set the sample size with a confidence level of 95%. The research went into the field to conduct the survey with questionnaires in 200 coconut farmers in Phetchaburi Province and Prachuap Khiri Khan Province where 0.07 million hectare of coconuts are grown, or 31% of all coconut plantations in Thailand. According to the main findings, raw materials in the form of leftover coconut biomass are composed of outer coat, middle fibrous cat, shell, upper core leave stalk, frond, bottom core leave stalk and empty fruit bunch. Upper core leave stalks are raw materials that have attracted the greatest interest in gathering as raw materials, whereas shell has attracted the least interest. The findings revealed that fruit peeling yards are the people best suited for compiling and buying raw materials. In terms of obstacles to gathering, material price uncertainty was found to be a major obstacle in gathering materials and was correlated opposite to interest in gathering upper core leave stalks with statistical significance.","PeriodicalId":247617,"journal":{"name":"International Journal of Smart Grid and Clean Energy","volume":"73 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":"114860429","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}

引用次数: 0