International Journal of Smart Grid and Clean Energy最新文献_第10页

Crop residues as alternative to fuel for power generation in Rwanda 在卢旺达，农作物残余物作为发电燃料的替代品

International Journal of Smart Grid and Clean Energy Pub Date : 1900-01-01 DOI: 10.12720/sgce.11.1.49-56

Ndizihiwe Prosper, B. Mkandawire, Kayibanda Venant

{"title":"Crop residues as alternative to fuel for power generation in Rwanda","authors":"Ndizihiwe Prosper, B. Mkandawire, Kayibanda Venant","doi":"10.12720/sgce.11.1.49-56","DOIUrl":"https://doi.org/10.12720/sgce.11.1.49-56","url":null,"abstract":"One of the big questions that the world is facing nowadays is climate change caused by global warming due to greenhouse gases (GHG). This degradation is based on ejected gases in the atmosphere. Reduction of the use of fossil fuel as the source of energy is critical in reducing those gases and reduction of importation costs. Consideration of local resources that would be the source of energy is one of the ways. This work investigates the contribution that crop residues of rice and maize would have on energy demand in Rwanda once they are used. Historical data of yearly energy demand and production of both maize and rice have been used. Calorific values have been determined from a laboratory experiment. The results show that they can contribute about a half to the Rwandan total energy consumption. Fossil fuel can completely be replaced by crop restudies in energy generation if the maximum of residues is collected. Under constraint that only half of the residues can be collected in practice, a small value of the fossil fuel can still be used. Analysis also has shown the dependence of residues species on the calorific values.","PeriodicalId":247617,"journal":{"name":"International Journal of Smart Grid and Clean Energy","volume":"29 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":"121296276","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

Simple payback time of semi-flexible monocrystalline silicon solar panel used for solar vehicles 太阳能汽车用半柔性单晶硅太阳能电池板的简单投资回收期

International Journal of Smart Grid and Clean Energy Pub Date : 1900-01-01 DOI: 10.12720/sgce.8.4.436-442

T. Koyuncu

引用次数: 2

Development of Temporary Ground Wire Detection Device 临时接地线检测装置的研制

International Journal of Smart Grid and Clean Energy Pub Date : 1900-01-01 DOI: 10.12720/SGCE.2.1.1-5

Jing Jiang, Tao Yu

引用次数: 5

Implementation of improved positive and negative sequences separation phase-locked loop under grid voltage sags 电网电压跌落下改进的正、负序分离锁相环的实现

International Journal of Smart Grid and Clean Energy Pub Date : 1900-01-01 DOI: 10.12720/SGCE.6.1.1-10

Bing Chen, Chenyang Hei, Yuanpeng Guan, Yunxiang Xie, Zhiwu Zeng

引用次数: 0

Distribution company investment cost reduction analysis with grid-connected solar PV allocation in power distribution system 配电网中太阳能光伏并网配置降低配电公司投资成本分析

International Journal of Smart Grid and Clean Energy Pub Date : 1900-01-01 DOI: 10.12720/SGCE.9.1.230-235

Katsarin Seepromting, R. Chatthaworn, P. Khunkitti, A. Kruesubthaworn, A. Siritaratiwat, C. Surawanitkun

{"title":"Distribution company investment cost reduction analysis with grid-connected solar PV allocation in power distribution system","authors":"Katsarin Seepromting, R. Chatthaworn, P. Khunkitti, A. Kruesubthaworn, A. Siritaratiwat, C. Surawanitkun","doi":"10.12720/SGCE.9.1.230-235","DOIUrl":"https://doi.org/10.12720/SGCE.9.1.230-235","url":null,"abstract":"Currently, the solar PV is an important renewable energy because of an advantage for environment including the power distribution systems. Optimal sizing and placement of grid-connected solar photovoltaic (PV) are important for power loss reduction in distribution system because it also leads to the cost reduction. To promote the solar PV energy, feed-in tariff (FiT) policy was used in many countries. However, due to the FiT still higher than normal wholesale, the distribution company (DisCo) can absorb and leads to increase electricity retail price in the future. Therefore, the DisCo investment cost related to the power loss reduction was analyzed in this work by considering sizing and placement of grid-connected solar PV on the IEEE 33 bus and IEEE 69 bus distribution systems. To explore optimal solar PV placement, profit-cost ratio (PCR) was estimated with parameters of the reduced cost due to reduction of power loss and the DisCo investment to absorb FiT cost. The results show the DisCo cost depending on the solar PV sizing and the reduced cost due to installation of solar PV placement in power distribution system. Although the maximum power loss reduction is an optimal location, the maximum reduction of the DisCo absorbing FiT cost was achieved at the maximum PCR location. Thus, the optimal placement relating to the PCR is an important to explore the solar PV allocation in distribution system.","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":"126040015","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

Coordinated management of low voltage power networks with photovoltaic energy sources 低压电网与光伏能源的协同管理

International Journal of Smart Grid and Clean Energy Pub Date : 1900-01-01 DOI: 10.12720/SGCE.5.4.213-220

B. Rojas, M. Alonso, H. Amaris, L. González

{"title":"Coordinated management of low voltage power networks with photovoltaic energy sources","authors":"B. Rojas, M. Alonso, H. Amaris, L. González","doi":"10.12720/SGCE.5.4.213-220","DOIUrl":"https://doi.org/10.12720/SGCE.5.4.213-220","url":null,"abstract":"Over the last decades, active power networks have reached great attention due to the incorporation of distributed energy resources into low voltage power systems. In this paper, a decentralized energy management strategy is proposed as an efficient way to minimize both active power losses and voltage profile deviation of an distribution power network with photovoltaic solar farms, and also at the same time, aims to improve the reliability and the security of supply. The coordinated energy management concept relies on a two-step optimization approach based on genetic algorithms (GA) and MINLP, in which a multi-objective function is used which takes into account reliability and operational technical constraints in its formulation. The suitability of the proposed methodology is tested on an existing low voltage power system, in which two aspects are considered: firstly, determining the optimal allocation of PV units and secondly, establishing the optimal reschedule of the active power of the generation units participating in the energy mix and minimizing both the real power losses and voltage deviation of the entire power system.","PeriodicalId":247617,"journal":{"name":"International Journal of Smart Grid and Clean Energy","volume":"85 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":"114192356","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

Performance of the air-based solar heating system 空气基太阳能供暖系统的性能

International Journal of Smart Grid and Clean Energy Pub Date : 1900-01-01 DOI: 10.12720/sgce.8.6.633-642

Youngjin Choi

引用次数: 0

Simulation and detectability analysis of power system open phase condition in Korea’s standard nuclear power plant 韩国标准核电站电力系统开相状态仿真及可探测性分析

International Journal of Smart Grid and Clean Energy Pub Date : 1900-01-01 DOI: 10.12720/SGCE.9.2.282-289

S. Hwang, Balho H. Kim, S. Joung, H. Jang

引用次数: 1

Geographical smoothing effects on wind power output variation in Japan 日本风电输出变化的地理平滑效应

International Journal of Smart Grid and Clean Energy Pub Date : 1900-01-01 DOI: 10.12720/sgce.7.3.188-194

T. Enomoto, T. Ikegami, C. Urabe, Tetsuo Saitou, K. Ogimoto

{"title":"Geographical smoothing effects on wind power output variation in Japan","authors":"T. Enomoto, T. Ikegami, C. Urabe, Tetsuo Saitou, K. Ogimoto","doi":"10.12720/sgce.7.3.188-194","DOIUrl":"https://doi.org/10.12720/sgce.7.3.188-194","url":null,"abstract":"There is a growing concern that the supply and demand operations of electric power systems will become more difficult with a large number of renewable energy sources whose outputs depend on the weather variations. To investigate the countermeasures that are required to stabilize the outputs of the power systems, it is important to quantitatively evaluate the wind power output fluctuations and variations corresponding to the supply-demand balancing controls, such as turbine governor control, load frequency control, and economic-load dispatching control (EDC). With an increasing number of wind power generators being installed, these fluctuations and variations with respect to the rated output capacity will decrease because of the geographical smoothing effects, i.e., the output fluctuations and variations of multiple wind turbines will mutually cancel one another. In this study, we quantitatively evaluate the geographical smoothing effects using the actual high time-resolution wind power output data of several wind farms that is recorded in the supervisory control and data acquisition systems of the Tohoku and Kyushu power systems in Japan. Further, we evaluate the smoothing effects pertaining to the introduced wind power using various approximation curves, and it is observed that the exponential parts of the approximation curves depend on the region and cycles. Using these exponential parts, we observe that perfect smoothing effects were obtained during the shorter periods of cycles. The smoothing effects of the fluctuations in the EDC domain are observed to be small, especially in the Tohoku region.","PeriodicalId":247617,"journal":{"name":"International Journal of Smart Grid and Clean Energy","volume":"147 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":"122506823","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

Economic analysis on renovating lighting system on existing building: A case study in Thailand 既有建筑照明系统改造的经济分析——以泰国为例

International Journal of Smart Grid and Clean Energy Pub Date : 1900-01-01 DOI: 10.12720/SGCE.9.1.77-81

A. Ngaopitakkul, Bancha Sreewiroteb

引用次数: 2