Sustainable Energy Technologies and Assessments最新文献

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Wide power control of high-gain and compact quasi Z-source inverter in remote and sustainable solar water pumping system

IF 7.1 2区工程技术 Q1 ENERGY & FUELS

Sustainable Energy Technologies and Assessments

Pub Date : 2025-02-01 DOI: 10.1016/j.seta.2025.104173

Pritam Kumar Gayen , Sudip Das

In a solar water pumping system, the solar energy-driven AC induction motor needs an enhanced boost inverter to support low-power operation for a wide range of operations. In this regard, a novel high-gain active-switched-capacitor quasi-Z-source inverter (HG-ASCqZSI) is suggested for a PV source-based pump-motor unit’s broad range of functions by doubling the voltage gain and also by empowering its low power handling capability. The recommended single-stage boost inverter is excellent for distant locations since it is compact (single inductor) and also provides double DC-side voltage gain and low power operations. The improved performances (reduced torque and speed ripple, and reduced THD of current) of the electric drive are obtained in low power conditions by providing anti-parallel switches across the diodes of the switched capacitor unit of the proposed inverter. Techno-economic analysis on the proposed HG-ASCqZSI based scheme reveals that the capacity factor is increased by 2.7%, the cost of energy is reduced by 16.7%, and the CO₂ emission rate is reduced by 14.3%. Tests are carried out on software and hardware platforms to verify the enhanced dynamic behavior of the system during low power transfer.

{"title":"Wide power control of high-gain and compact quasi Z-source inverter in remote and sustainable solar water pumping system","authors":"Pritam Kumar Gayen , Sudip Das","doi":"10.1016/j.seta.2025.104173","DOIUrl":"10.1016/j.seta.2025.104173","url":null,"abstract":"<div><div>In a solar water pumping system, the solar energy-driven AC induction motor needs an enhanced boost inverter to support low-power operation for a wide range of operations. In this regard, a novel high-gain active-switched-capacitor quasi-Z-source inverter (HG-ASCqZSI) is suggested for a PV source-based pump-motor unit’s broad range of functions by doubling the voltage gain and also by empowering its low power handling capability. The recommended single-stage boost inverter is excellent for distant locations since it is compact (single inductor) and also provides double DC-side voltage gain and low power operations. The improved performances (reduced torque and speed ripple, and reduced THD of current) of the electric drive are obtained in low power conditions by providing anti-parallel switches across the diodes of the switched capacitor unit of the proposed inverter. Techno-economic analysis on the proposed HG-ASCqZSI based scheme reveals that the capacity factor is increased by 2.7%, the cost of energy is reduced by 16.7%, and the CO<sub>2</sub> emission rate is reduced by 14.3%. Tests are carried out on software and hardware platforms to verify the enhanced dynamic behavior of the system during low power transfer.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"74 ","pages":"Article 104173"},"PeriodicalIF":7.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143136308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Process integration and life cycle assessment of ethane thermal cracking, carbon capture, green hydrogen, CO2 hydrogenation and methanol to olefins

IF 7.1 2区工程技术 Q1 ENERGY & FUELS

Sustainable Energy Technologies and Assessments

Pub Date : 2025-02-01 DOI: 10.1016/j.seta.2024.104162

Zekun Yang , Zhicong Fang , Ting Pan , Shuhao Zhang , Runtao Sun , Xiaomei Huang , Nan Zhang

The olefins production relies on thermal cracking, which emits significant greenhouse gas. This study proposed a novel clean olefins production process, which utilizes cracked hydrogen from ethane cracking, to converted captured CO₂ from flue gas into methanol and finally to produce olefins. A real industrial plant with production rates of 819200 t/y of ethylene and 77520 t/y of propylene is selected for case study. The proposed processes are simulated in Aspen Plus, with consideration of heat integration. By generating two optimal heat exchanger networks for high-capacity and low-capacity operations scenarios, increased heat recovery of 35.11 MW and 29.33 MW can be achieved compared to the base cases. This results in an improvement in process energy efficiency through effective heat integration between the ethylene, CCS, and MTO processes. The life cycle assessment shows that all cracked hydrogen can convert 70 % CO₂ from flue gas. In this scenario, the global warming potential (GWP) is 1.64 kg CO₂ eq/kg of olefins, slightly higher than demonstration industrial plant (1.53). If 85 % of CO₂ is converted with support of electrolyzer and photovoltaic power, although the GWP during production process decreases to 1.47, the manufacture of electrolyzer leads to significant emission and which is undesirable.

{"title":"Process integration and life cycle assessment of ethane thermal cracking, carbon capture, green hydrogen, CO2 hydrogenation and methanol to olefins","authors":"Zekun Yang , Zhicong Fang , Ting Pan , Shuhao Zhang , Runtao Sun , Xiaomei Huang , Nan Zhang","doi":"10.1016/j.seta.2024.104162","DOIUrl":"10.1016/j.seta.2024.104162","url":null,"abstract":"<div><div>The olefins production relies on thermal cracking, which emits significant greenhouse gas. This study proposed a novel clean olefins production process, which utilizes cracked hydrogen from ethane cracking, to converted captured CO<sub>2</sub> from flue gas into methanol and finally to produce olefins. A real industrial plant with production rates of 819200 t/y of ethylene and 77520 t/y of propylene is selected for case study. The proposed processes are simulated in Aspen Plus, with consideration of heat integration. By generating two optimal heat exchanger networks for high-capacity and low-capacity operations scenarios, increased heat recovery of 35.11 MW and 29.33 MW can be achieved compared to the base cases. This results in an improvement in process energy efficiency through effective heat integration between the ethylene, CCS, and MTO processes. The life cycle assessment shows that all cracked hydrogen can convert 70 % CO<sub>2</sub> from flue gas. In this scenario, the global warming potential (GWP) is 1.64 kg CO<sub>2</sub> eq/kg of olefins, slightly higher than demonstration industrial plant (1.53). If 85 % of CO<sub>2</sub> is converted with support of electrolyzer and photovoltaic power, although the GWP during production process decreases to 1.47, the manufacture of electrolyzer leads to significant emission and which is undesirable.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"74 ","pages":"Article 104162"},"PeriodicalIF":7.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143136428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impacts of superconducting fault current limiters on distance protection for grid-connected photovoltaic plants

IF 7.1 2区工程技术 Q1 ENERGY & FUELS

Sustainable Energy Technologies and Assessments

Pub Date : 2025-02-01 DOI: 10.1016/j.seta.2024.104165

Chao Li , Qi Wu , Rui Mu , Ying Xin , Bin Li

Photovoltaic (PV) has become a crucial support for energy transformation and the development of clean energy. Superconducting fault current limiters (SFCLs), with their superconducting and quench characteristics, are considered to be effective in limiting the fault currents and enhancing the low-voltage ride-through (LVRT) capability of PV plants. However, the current-limiting impedance of SFCLs will affect the relay protection for PV plants, particularly their distance protection. In this work, investigations are carried out to explore the impacts of SFCLs on the distance protection for PV plants, revealing that SFCLs may cause maloperation of distance protection under asymmetric short-circuit faults. An improved protection method is designed to eliminate the negative impacts of SFCLs and precisely identify short-circuit faults. A model of the grid-connected PV plant with SFCLs is constructed using the PSCAD/EMTDC software package, and the simulation results validate the accuracy of the improved protection method, serving as a reference for the application of SFCLs in PV plants.

{"title":"Impacts of superconducting fault current limiters on distance protection for grid-connected photovoltaic plants","authors":"Chao Li , Qi Wu , Rui Mu , Ying Xin , Bin Li","doi":"10.1016/j.seta.2024.104165","DOIUrl":"10.1016/j.seta.2024.104165","url":null,"abstract":"<div><div>Photovoltaic (PV) has become a crucial support for energy transformation and the development of clean energy. Superconducting fault current limiters (SFCLs), with their superconducting and quench characteristics, are considered to be effective in limiting the fault currents and enhancing the low-voltage ride-through (LVRT) capability of PV plants. However, the current-limiting impedance of SFCLs will affect the relay protection for PV plants, particularly their distance protection. In this work, investigations are carried out to explore the impacts of SFCLs on the distance protection for PV plants, revealing that SFCLs may cause maloperation of distance protection under asymmetric short-circuit faults. An improved protection method is designed to eliminate the negative impacts of SFCLs and precisely identify short-circuit faults. A model of the grid-connected PV plant with SFCLs is constructed using the PSCAD/EMTDC software package, and the simulation results validate the accuracy of the improved protection method, serving as a reference for the application of SFCLs in PV plants.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"74 ","pages":"Article 104165"},"PeriodicalIF":7.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143135989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","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 renewable systems hybridized with the most promising SMR designs for the full economy decarbonization using hydrogen and electricity for standalone systems, the Canary Islands in 2040

IF 7.1 2区工程技术 Q1 ENERGY & FUELS

Sustainable Energy Technologies and Assessments

Pub Date : 2025-02-01 DOI: 10.1016/j.seta.2025.104199

César Berna-Escriche , David Blanco , Yago Rivera , Lucas Álvarez-Piñeiro , José Luis Muñoz-Cobo

The transition towards clean energies is essential to achieve the goal of complete decarbonization of the economy by mid-century. Renewable energies are and will be a significant consideration in future generation MIX, even though these systems have not yet fully demonstrated their suitability to operate autonomously in isolated areas with high demands. Specifically, significant oversizing of both the generation and storage systems when relying solely on renewables is needed. Therefore, this document assesses the performance of three systems in the Canary Archipelago, with projected electric demands of approximately 12 TWh/year and hydrogen demands of around 230,000 tH₂/year. In pursuit of this objective, the archipelago faces social, environmental, and economic challenges in overcoming the profound shift from a fossil fuel-dependent economy to a carbon-free one. Scenario modeling reveals that new SMRs, combined with notable contributions from renewable energies, are both technically feasible and economically viable. Levelized Costs ranging between 70–84 €/MWh are reached. These findings confirm the feasibility of an autonomous, reliable, and completely GHG-free system to produce electricity and hydrogen without relying on fossil fuels. Moreover, the proposed systems exhibit an extraordinarily low energy wastage (approximately 7–9%) despite being fully independent, off-grid setups with a substantial share of renewable energies.

{"title":"Performance of renewable systems hybridized with the most promising SMR designs for the full economy decarbonization using hydrogen and electricity for standalone systems, the Canary Islands in 2040","authors":"César Berna-Escriche , David Blanco , Yago Rivera , Lucas Álvarez-Piñeiro , José Luis Muñoz-Cobo","doi":"10.1016/j.seta.2025.104199","DOIUrl":"10.1016/j.seta.2025.104199","url":null,"abstract":"<div><div>The transition towards clean energies is essential to achieve the goal of complete decarbonization of the economy by mid-century. Renewable energies are and will be a significant consideration in future generation MIX, even though these systems have not yet fully demonstrated their suitability to operate autonomously in isolated areas with high demands. Specifically, significant oversizing of both the generation and storage systems when relying solely on renewables is needed. Therefore, this document assesses the performance of three systems in the Canary Archipelago, with projected electric demands of approximately 12 TWh/year and hydrogen demands of around 230,000 tH<sub>2</sub>/year. In pursuit of this objective, the archipelago faces social, environmental, and economic challenges in overcoming the profound shift from a fossil fuel-dependent economy to a carbon-free one. Scenario modeling reveals that new SMRs, combined with notable contributions from renewable energies, are both technically feasible and economically viable. Levelized Costs ranging between 70–84 €/MWh are reached. These findings confirm the feasibility of an autonomous, reliable, and completely GHG-free system to produce electricity and hydrogen without relying on fossil fuels. Moreover, the proposed systems exhibit an extraordinarily low energy wastage (approximately 7–9%) despite being fully independent, off-grid setups with a substantial share of renewable energies.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"74 ","pages":"Article 104199"},"PeriodicalIF":7.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143136028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A review of strategies enhancing lipid production from Chlorella: Progress and comparative analysis

IF 7.1 2区工程技术 Q1 ENERGY & FUELS

Sustainable Energy Technologies and Assessments

Pub Date : 2025-02-01 DOI: 10.1016/j.seta.2025.104190

Yao Liu , Xiang Liu , Lei Zhang , Pengying Xiao , Facheng Qiu , Zhiliang Cheng , Wensheng Li , Yongteng Zhao

Various strategies have been developed to improve lipid production in microalgae. However, owing to the various microalgal species and experimental conditions used in studies, identifying the effectiveness of lipid enhancement strategies just by comparing lipid yields is challenging. The key to identifying effective strategies is to investigate the increase in lipid yield caused by different strategies based on the same microalgal species. This review focuses on the oleaginous microalga Chlorella sp. In addition to the statistical lipid yield of Chlorella sp. under different strategies, the corresponding lipid increments were calculated and compared. A comprehensive analysis revealed that regulating the carbon to nitrogen (C/N) ratio is the most effective approach for enhancing lipid production. Strategies centered around nitrogen limitation, such as nitrogen limitation coupled with phosphorus repletion and exogenous phytohormones, also show feasibility. Moreover, the commonly used stage conversion time in the two-stage cultivation strategy is challenging, suggesting its potential impracticality.

{"title":"A review of strategies enhancing lipid production from Chlorella: Progress and comparative analysis","authors":"Yao Liu , Xiang Liu , Lei Zhang , Pengying Xiao , Facheng Qiu , Zhiliang Cheng , Wensheng Li , Yongteng Zhao","doi":"10.1016/j.seta.2025.104190","DOIUrl":"10.1016/j.seta.2025.104190","url":null,"abstract":"<div><div>Various strategies have been developed to improve lipid production in microalgae. However, owing to the various microalgal species and experimental conditions used in studies, identifying the effectiveness of lipid enhancement strategies just by comparing lipid yields is challenging. The key to identifying effective strategies is to investigate the increase in lipid yield caused by different strategies based on the same microalgal species. This review focuses on the oleaginous microalga <em>Chlorella</em> sp. In addition to the statistical lipid yield of <em>Chlorella</em> sp. under different strategies, the corresponding lipid increments were calculated and compared. A comprehensive analysis revealed that regulating the carbon to nitrogen (C/N) ratio is the most effective approach for enhancing lipid production. Strategies centered around nitrogen limitation, such as nitrogen limitation coupled with phosphorus repletion and exogenous phytohormones, also show feasibility. Moreover, the commonly used stage conversion time in the two-stage cultivation strategy is challenging, suggesting its potential impracticality.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"74 ","pages":"Article 104190"},"PeriodicalIF":7.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143136025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

4E valuation of standalone hybrid renewable energies system for building freshwater and electricity demand using green hydrogen yield and water desalination

IF 7.1 2区工程技术 Q1 ENERGY & FUELS

Sustainable Energy Technologies and Assessments

Pub Date : 2025-02-01 DOI: 10.1016/j.seta.2025.104177

Mohamed G. Basiony , Sameh Nada , Shinsuke Mori , Hamdy Hassan

4E analysis of a designed hydrogen-based standalone system powered by hybrid renewable energy (RE) sources of photovoltaic (PV) panels and wind turbines (WTs) is presented to provide a building with its yearly electricity, freshwater, and hot water. These requirements are satisfied by a new hybrid system composed of proton exchange membrane (PEM) electrolyzers, PEM fuel cells (FCs), reverse osmosis (RO), and humidification dehumidification (HDH). A mathematical model is constructed and solved using MATLAB/Simulink to simulate the entire system under the climate of Alexandria, Egypt. The system optimization demonstrates that the minimum hydrogen storage tank size is 1659.62 kg, achieved at 196 PV panels and 23 WTs, resulting in a PV power ratio of 33.03 %. The recovered FC heat is utilized in HDH to generate 82.53 m³ of freshwater, representing 4.89 % of the total water consumption, while RO supplies the rest. The overall system’s annual energy and exergy efficiencies are 14.09 % and 18.3 %, respectively. The designed system demonstrates its efficacy for meeting residential building demands with a levelized cost of energy (LCOE) of 0.552 US$/kWh based on a total annual cost of 148,243.50 US$ (2,470.73 US$/person) and CO₂ emission savings of 147.61 tons. The sensitivity analysis shows that the system is more sensitive to wind speed changes than solar radiation.

{"title":"4E valuation of standalone hybrid renewable energies system for building freshwater and electricity demand using green hydrogen yield and water desalination","authors":"Mohamed G. Basiony , Sameh Nada , Shinsuke Mori , Hamdy Hassan","doi":"10.1016/j.seta.2025.104177","DOIUrl":"10.1016/j.seta.2025.104177","url":null,"abstract":"<div><div>4E analysis of a designed hydrogen-based standalone system powered by hybrid renewable energy (RE) sources of photovoltaic (PV) panels and wind turbines (WTs) is presented to provide a building with its yearly electricity, freshwater, and hot water. These requirements are satisfied by a new hybrid system composed of proton exchange membrane (PEM) electrolyzers, PEM fuel cells (FCs), reverse osmosis (RO), and humidification dehumidification (HDH). A mathematical model is constructed and solved using MATLAB/Simulink to simulate the entire system under the climate of Alexandria, Egypt. The system optimization demonstrates that the minimum hydrogen storage tank size is 1659.62 kg, achieved at 196 PV panels and 23 WTs, resulting in a PV power ratio of 33.03 %. The recovered FC heat is utilized in HDH to generate 82.53 m<sup>3</sup> of freshwater, representing 4.89 % of the total water consumption, while RO supplies the rest. The overall system’s annual energy and exergy efficiencies are 14.09 % and 18.3 %, respectively. The designed system demonstrates its efficacy for meeting residential building demands with a levelized cost of energy (LCOE) of 0.552 US$/kWh based on a total annual cost of 148,243.50 US$ (2,470.73 US$/person) and CO<sub>2</sub> emission savings of 147.61 tons. The sensitivity analysis shows that the system is more sensitive to wind speed changes than solar radiation.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"74 ","pages":"Article 104177"},"PeriodicalIF":7.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143136309","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Stochastic approaches to sustainable energy in Iran: Enhancing power system flexibility and renewable integration

IF 7.1 2区工程技术 Q1 ENERGY & FUELS

Sustainable Energy Technologies and Assessments

Pub Date : 2025-02-01 DOI: 10.1016/j.seta.2024.104145

Mohammad-Amin Pourmoosavi, Turaj Amraee

In the quest for a sustainable future, transitioning to a low-carbon power sector is essential. This transition is increasingly reliant on intermittent renewable energy sources, introducing significant uncertainty into power sector expansion planning. Understanding and managing this uncertainty is crucial for making informed decisions about future generation and capacity mix, as well as for estimating the associated costs. Addressing a gap in the current literature, we introduce an innovative multi-stage stochastic optimization model that uniquely optimizes investments in both generation and energy storage devices. Our model considers the integration of power system flexibility requirements with a nuanced understanding of national-level energy demand and supply uncertainties. The introduced model is employed to explore the effects of two distinct renewable penetrations on the power sector. Additionally, the impact of carbon emission policies is investigated, providing insights into the complex interplay between these factors. We apply the advanced stochastic dual dynamic programming technique, enabling us to handle the complexities of large-scale multi-stage stochastic expansion planning. The methodology and models proposed in this paper are applied to the generation and storage expansion planning of Iran power system, providing practical insights and demonstrating the viability of these strategies in a real-world context. The study indicates that the effectiveness of carbon policies is closely coupled with the level of renewable resource integration. Also, we identify a low-carbon pathway, involving the strategic retrofitting of existing natural gas combined cycle units and the gradual phasing down of gasoline-fired steam units. Furthermore, our study suggests that, for natural-gas dominated power system’s economic transition to low-carbon emissions, equipping all new natural gas combined cycle units with carbon capture, utilization, and storage technology is viable despite efficiency decrease and higher investment costs, an insight not previously established.

{"title":"Stochastic approaches to sustainable energy in Iran: Enhancing power system flexibility and renewable integration","authors":"Mohammad-Amin Pourmoosavi, Turaj Amraee","doi":"10.1016/j.seta.2024.104145","DOIUrl":"10.1016/j.seta.2024.104145","url":null,"abstract":"<div><div>In the quest for a sustainable future, transitioning to a low-carbon power sector is essential. This transition is increasingly reliant on intermittent renewable energy sources, introducing significant uncertainty into power sector expansion planning. Understanding and managing this uncertainty is crucial for making informed decisions about future generation and capacity mix, as well as for estimating the associated costs. Addressing a gap in the current literature, we introduce an innovative multi-stage stochastic optimization model that uniquely optimizes investments in both generation and energy storage devices. Our model considers the integration of power system flexibility requirements with a nuanced understanding of national-level energy demand and supply uncertainties. The introduced model is employed to explore the effects of two distinct renewable penetrations on the power sector. Additionally, the impact of carbon emission policies is investigated, providing insights into the complex interplay between these factors. We apply the advanced stochastic dual dynamic programming technique, enabling us to handle the complexities of large-scale multi-stage stochastic expansion planning. The methodology and models proposed in this paper are applied to the generation and storage expansion planning of Iran power system, providing practical insights and demonstrating the viability of these strategies in a real-world context. The study indicates that the effectiveness of carbon policies is closely coupled with the level of renewable resource integration. Also, we identify a low-carbon pathway, involving the strategic retrofitting of existing natural gas combined cycle units and the gradual phasing down of gasoline-fired steam units. Furthermore, our study suggests that, for natural-gas dominated power system’s economic transition to low-carbon emissions, equipping all new natural gas combined cycle units with carbon capture, utilization, and storage technology is viable despite efficiency decrease and higher investment costs, an insight not previously established.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"74 ","pages":"Article 104145"},"PeriodicalIF":7.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143136310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The site selection of wind energy power plant using satellite remote sensing and CA-Markov model from terrain roughness perspective

IF 7.1 2区工程技术 Q1 ENERGY & FUELS

Sustainable Energy Technologies and Assessments

Pub Date : 2025-02-01 DOI: 10.1016/j.seta.2025.104176

Arash Mesri , Fatemeh Rahimi-Ajdadi , Iraj Bagheri

One of the crucial challenges in the development of wind energy is to choose the suitable place to install a power plant. This research represented a fast and economical method to prioritize the potential areas in terms of terrain roughness using Landsat satellite images. Firstly, multitemporal detection of the study area was done using SVM. The dynamic nature of land use with time was considered and the map simulated by the CA-Markov in 2030 was used to detect the land cover. The predicted model was integrated with a roughness table and roughness length and class maps were produced. The results showed that there are 48.71 ha of integrated lands in the northwest located in the coastline with the best potential to construct a power plant. About 259.84 ha of coastline were placed in the next priorities. An area of 2549.36 ha of agricultural lands with a maximum roughness length of 0.25 m was suggested for installing wind turbines due to the absence of obstacles and being open. The findings also can be useful as a database in modeling the wind speed near the hub of high turbines and in creation of a roughness rose for wind site.

{"title":"The site selection of wind energy power plant using satellite remote sensing and CA-Markov model from terrain roughness perspective","authors":"Arash Mesri , Fatemeh Rahimi-Ajdadi , Iraj Bagheri","doi":"10.1016/j.seta.2025.104176","DOIUrl":"10.1016/j.seta.2025.104176","url":null,"abstract":"<div><div>One of the crucial challenges in the development of wind energy is to choose the suitable place to install a power plant. This research represented a fast and economical method to prioritize the potential areas in terms of terrain roughness using Landsat satellite images. Firstly, multitemporal detection of the study area was done using SVM. The dynamic nature of land use with time was considered and the map simulated by the CA-Markov in 2030 was used to detect the land cover. The predicted model was integrated with a roughness table and roughness length and class maps were produced. The results showed that there are 48.71 ha of integrated lands in the northwest located in the coastline with the best potential to construct a power plant. About 259.84 ha of coastline were placed in the next priorities. An area of 2549.36 ha of agricultural lands with a maximum roughness length of 0.25 m was suggested for installing wind turbines due to the absence of obstacles and being open. The findings also can be useful as a database in modeling the wind speed near the hub of high turbines and in creation of a roughness rose for wind site.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"74 ","pages":"Article 104176"},"PeriodicalIF":7.1,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143136425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimizing power and energy loss reduction in distribution systems with RDGs, DSVCs and EVCS under different weather scenarios

IF 7.1 2区工程技术 Q1 ENERGY & FUELS

Sustainable Energy Technologies and Assessments

Pub Date : 2025-01-31 DOI: 10.1016/j.seta.2025.104219

Chava Hari Babu , Hariharan Raju , Yuvaraj Thangaraj , Sudhakar Babu Thanikanti , Benedetto Nastasi

Electric power grids are increasingly vulnerable to disruptions from extreme weather events, resulting in prolonged outages. The rise of electric vehicles (EVs) offers benefits like improved sustainability and reduced maintenance but also introduces challenges such as voltage instability and higher power losses when integrated into radial distribution systems (RDS). This study proposes an approach that integrates electric vehicle charging stations (EVCSs), distribution static VAR compensators (DSVCs), and renewable energy sources (RESs) like solar and wind into RDS, supporting both grid-to-vehicle (G2V) and vehicle-to-grid (V2G) modes to enhance flexibility and resilience. The study aims to reduce power losses under normal conditions and minimize energy not delivered (END) during fault conditions, evaluated under different weather scenarios. The spotted hyena optimizer algorithm (SHOA) and genetic algorithm (GA) are employed to optimize RDG, DSVC, and EVCS locations and capacities. Tests on the IEEE 34-bus RDS show SHOA achieves a 25 % reduction in power losses, improving system resilience and outperforming GA in both power and energy loss reduction.

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引用次数: 0

Biohydrogen production from spent wastewater treatment Substrates: Techno-Economic viability and sustainability

IF 7.1 2区工程技术 Q1 ENERGY & FUELS

Sustainable Energy Technologies and Assessments

Pub Date : 2025-01-31 DOI: 10.1016/j.seta.2025.104202

Raana Fahim , Liu Cheng

This critical review highlights the potential of utilizing spent wastewater treatment substrates for biohydrogen (bioH₂) production, offering an eco-friendly and cost-effective solution aligned with Sustainable Development Goals (SDG 7) by promoting renewable energy production. Spent wastewater substrates are excellent feedstock due to their high organic and nutrient content, facilitating efficient waste-to-energy conversion. A hypothetical techno-economic analysis demonstrates financial viability, with key metrics such as a favorable return on investment and promising net present value, driven by low operational costs and substantial revenue from bioH₂ sales. Additionally, reusing the bioH₂-generated digestate as a biofertilizer and the treated wastewater for agricultural or industrial applications enhances sustainability and economic benefits. Integrating advanced pretreatment technologies, microbial consortia and carbon credit incentives can further enhance process efficiency and economic sustainability. Addressing challenges like low bioH₂ yield, production of inhibitors, and scalability barriers requires targeted research, pilot scale validation and supportive policies. Scaling up pilot projects and strengthening public–private partnerships are crucial for commercialization, paving the way for sustainable bioH₂ production from wastewater and advancing global renewable energy goals.

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引用次数: 0

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