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Investigation of power quality issues in 14-bus electrical network with high penetration of renewable generation 可再生能源发电渗透率高的 14 总线电网电能质量问题调查

Discover Energy Pub Date : 2023-12-01 DOI: 10.1007/s43937-023-00023-3

Malcolm Isaac Fernandez, Y. Go

引用次数: 0

MPPT techniques for photovoltaic systems: a systematic review in current trends and recent advances in artificial intelligence 光伏系统的 MPPT 技术：人工智能当前趋势和最新进展的系统回顾

Discover Energy Pub Date : 2023-12-01 DOI: 10.1007/s43937-023-00024-2

O. Boubaker

引用次数: 0

Experimental investigation of a novel smart energy management system for performance enhancement of conventional solar photovoltaic microgrids 提高传统太阳能光伏微电网性能的新型智能能源管理系统实验研究

Discover Energy Pub Date : 2023-11-14 DOI: 10.1007/s43937-023-00021-5

Salwan Tajjour, Shyam Singh Chandel

{"title":"Experimental investigation of a novel smart energy management system for performance enhancement of conventional solar photovoltaic microgrids","authors":"Salwan Tajjour, Shyam Singh Chandel","doi":"10.1007/s43937-023-00021-5","DOIUrl":"https://doi.org/10.1007/s43937-023-00021-5","url":null,"abstract":"Abstract Solar photovoltaic microgrids are reliable and efficient systems without the need for energy storage. However, during power outages, the generated solar power cannot be used by consumers, which is one of the major limitations of conventional solar microgrids. This results in power disruption, developing hotspots in PV modules, and significant loss of generated power, thus affecting the efficiency of the system. These issues can be resolved by implementing a smart energy management system for such microgrids. In this study, a smart energy management system is proposed for conventional microgrids, which consists of two stages. First power production forecasting is done using an artificial neural network technique and then using a smart load demand management controller system which uses Grey Wolf optimiser to optimize the load consumption. To demonstrate the proposed system, an experimental microgrid setup is established to simulate and evaluate its performance under real outdoor conditions. The results show a promising system performance by reducing the conventional solar microgrids losses by 100% during clear sunny conditions and 42.6% under cloudy conditions. The study results are of relevance to further develop a smart energy management system for conventional microgrid Industry and to achieve the targets of sustainable development goals.","PeriodicalId":29973,"journal":{"name":"Discover Energy","volume":"42 25","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134953439","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

Promoting industrial symbiosis and circularisation by optimising waste-based briquette shelf life 通过优化基于废物的型煤保质期，促进工业共生和循环

Discover Energy Pub Date : 2023-10-30 DOI: 10.1007/s43937-023-00020-6

Rejoice Ntiriwaa Ossei-Bremang, Eunice Akyereko Adjei, Francis Kemausuor, Eric Kwesi Gyenin

{"title":"Promoting industrial symbiosis and circularisation by optimising waste-based briquette shelf life","authors":"Rejoice Ntiriwaa Ossei-Bremang, Eunice Akyereko Adjei, Francis Kemausuor, Eric Kwesi Gyenin","doi":"10.1007/s43937-023-00020-6","DOIUrl":"https://doi.org/10.1007/s43937-023-00020-6","url":null,"abstract":"Abstract The fusion of the circular economy and industrial symbiosis has several advantages from an economic and developmental standpoint. Cooking energy security issues in Africa can partly be solved by the utilization of waste resources in energy technology decisions such as briquette. However, one of the limitations associated with waste-based briquettes has been identified as a reduction in efficiency when stored for a long period of time under varied storage conditions. The aim of this study was to ascertain the effects of storage time and exposure on the calorific value and mechanical characteristics of a waste-based composite briquette made from oil palm shell and decanter cake after 180 days of storage. The calorific value decreased by 12.99% and 31.40%, respectively, for sealed packaged storage and open-air storage. On the 180th day of the experiment, the packaged storage and the open-air storage registered 1000.48 kg/m 3 and 870 kg/m 3 , 72.34% and 100%, 712% and 895%, and 118% and 143% for relaxed densities, shatter indices, resistance to impact, and hygroscopic properties respectively. Manufacturers within West Africa can adopt the findings in this study as a guide for their processes.","PeriodicalId":29973,"journal":{"name":"Discover Energy","volume":"38 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136103961","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

Temporal dynamics of energy production at the Taïba Ndiaye wind farm in Senegal 塞内加尔Taïba Ndiaye风电场能源生产的时间动态

Discover Energy Pub Date : 2023-10-20 DOI: 10.1007/s43937-023-00018-0

Serigne Abdoul Aziz Niang, Mamadou Simina Drame, Ahmed Gueye, Astou Sarr, Mame Diarra Toure, Dialo Diop, Seydina Oumar Ndiaye, Kharouna Talla

{"title":"Temporal dynamics of energy production at the Taïba Ndiaye wind farm in Senegal","authors":"Serigne Abdoul Aziz Niang, Mamadou Simina Drame, Ahmed Gueye, Astou Sarr, Mame Diarra Toure, Dialo Diop, Seydina Oumar Ndiaye, Kharouna Talla","doi":"10.1007/s43937-023-00018-0","DOIUrl":"https://doi.org/10.1007/s43937-023-00018-0","url":null,"abstract":"Abstract The study presented in this article focuses on the temporal dynamics of wind energy production at the Taïba Ndiaye wind farm in Senegal, with a capacity of 158.7 MW. The monthly and seasonal distribution of production shows a strong trend, with maximums recorded between December and May (winter and spring) at around 1800 MWh, and minimums between July and November (summer and autumn) with production below 500 MWh. The diurnal cycle representation exhibits variation with a marked cycle, particularly between November and April. Night-time production is higher than daytime production by more than 43%. The effects of 100-m wind on the farm production are also analysed and show a positive correlation between wind speed and production throughout the year. Production peaks observed in winter and spring are caused by strong winds (approximately 8.5 m/s), while the lowest levels recorded during the summer season are due to weather conditions characterized by weak winds (less than 4 m/s). Similarly, optimal wind directions are observed in winter and spring, periods of maximum production, when the winds blow between the northwest and northeast.","PeriodicalId":29973,"journal":{"name":"Discover Energy","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135616262","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

Challenges for district heating in Poland 波兰区域供热面临的挑战

Discover Energy Pub Date : 2023-09-11 DOI: 10.1007/s43937-023-00019-z

Karolina Talarek, Anna Knitter-Piątkowska, Tomasz Garbowski

{"title":"Challenges for district heating in Poland","authors":"Karolina Talarek, Anna Knitter-Piątkowska, Tomasz Garbowski","doi":"10.1007/s43937-023-00019-z","DOIUrl":"https://doi.org/10.1007/s43937-023-00019-z","url":null,"abstract":"Abstract Currently, the district heating (DH) in Poland is facing many challenges. The business model used hitherto was very simple—in most cities, heating plants produced heat, and centralized heating systems supplied the \"product\" at a price approved annually by the president of the Energy Regulatory Office (URE). However, recent years have brought significant changes on the market. EU regulations force the elimination of old coal-fired plants that were still built in the Polish People's Republic (PRL), moreover, high prices of CO 2 emission allowances aggravate the financial situation of companies. In addition, in the heating sector, the trend observed in the power sector is becoming increasingly visible—limiting the role of large sources in favor of energy generated locally, closer to the customer. One of the biggest challenges is achieving the targets set by the EU for the share of renewable energy sources (RES) in the heating sector. The present conflicts and problems with the supply of coal and gas are an additional impulse to turn to RES. Thus, the development of sustainable and innovative solutions for energy production and supply at the level of urban networks is currently one of the main technical challenges. The purpose of the paper is to present the current situation and perspectives of development of district heating systems in Poland with a view to the status of district heating in the world, and some deeper insight into European conditions. The review presents energy sources with particular emphasis on renewable energy sources (RES) and their cogeneration for heat production. The examples of existing heating network solutions using renewable energy sources, based on the selected published case studies, are also discussed.","PeriodicalId":29973,"journal":{"name":"Discover Energy","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135935282","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: 2

Microscopic and macroscopic assessment of carbonate dissolution for geologic CO2documentclass[12pt]{minimal} usepackage{amsmath} usepackage{wasysym} usepackage{amsfonts} usepackage{amssymb} usepackage{amsbsy} usepackage{mathrsfs} usepackage{upgreek} setlength{oddsidemargin}{-69pt} begin{d 地质CO2碳酸盐溶解的微观和宏观评估documentclass[12pt]｛minimum｝usepackage｛amsmath｝use package｝wasysym｝usepackage｛asfonts｝usecpackage{amssymb｝ucepackage{amsbsy｝ usepackage{mathrsfs｝ userpackage{upgeek｝setlength｛doddsidemargin｝｛-69pt｝sbegin｛d

Discover Energy Pub Date : 2023-08-30 DOI: 10.1007/s43937-023-00017-1

Jacquelin E. Cobos, Olav Folkvord, E. Søgaard, B. Brattekås

引用次数: 0

Information refining and big data analysis on the crisis on the fossil fuel market to identify of Russia’s hostile narratives towards European Union countries 对化石燃料市场危机进行信息提炼和大数据分析，识别俄罗斯对欧盟国家的敌对叙事

Discover Energy Pub Date : 2023-06-16 DOI: 10.1007/s43937-023-00016-2

W. Cetera, A. Zolnierski, Dariusz Jaruga, P. Celiński, Jan Grzegorek

引用次数: 0

Cost reduction in low-carbon hydrogen: effective but insufficient to mitigate carbon emissions 降低低碳氢成本:有效但不足以减少碳排放

Discover Energy Pub Date : 2023-06-02 DOI: 10.1007/s43937-023-00015-3

T. Wei, S. Glomsrød