PRX EnergyPub Date : 2024-08-08DOI: 10.1103/prxenergy.3.033003
Julian Fritzsch, Philippe Jacquod
{"title":"Stabilizing Large-Scale Electric Power Grids with Adaptive Inertia","authors":"Julian Fritzsch, Philippe Jacquod","doi":"10.1103/prxenergy.3.033003","DOIUrl":"https://doi.org/10.1103/prxenergy.3.033003","url":null,"abstract":"The stability of ac power grids relies on ancillary services that mitigate frequency fluctuations. The electromechanical inertia of large synchronous generators is currently the only resource to absorb frequency disturbances on subsecond time scales. Replacing standard thermal power plants with inertialess new renewable sources of energy (NREs) therefore jeopardizes grid stability against, e.g., sudden power-generation losses. To guarantee system stability and compensate the lack of electromechanical inertia in grids with large penetrations of NREs, virtual synchronous generators, which emulate conventional generators, have been proposed. Here, we propose a novel control scheme for virtual synchronous generators, where the provided inertia is large at short times—thereby absorbing faults as efficiently as conventional generators—but decreases over a tunable time scale to prevent coherent frequency oscillations from setting in. We evaluate the performance of this adaptive-inertia scheme under sudden power losses in large-scale transmission grids. We find that it systematically outperforms conventional electromechanical inertia and that it is more stable than previously suggested schemes. Numerical simulations show how a quasioptimal geographical distribution of adaptive-inertia devices not only absorbs local faults efficiently but also significantly increases the damping of interarea oscillations. Our results show that the proposed adaptive-inertia control scheme is an excellent solution to strengthen grid stability in future low-inertia power grids with large penetrations of NREs.\u0000 \u0000 \u0000 \u0000 \u0000 Published by the American Physical Society\u0000 2024\u0000 \u0000 \u0000","PeriodicalId":497486,"journal":{"name":"PRX Energy","volume":"55 24","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141928983","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}
PRX EnergyPub Date : 2024-07-26DOI: 10.1103/prxenergy.3.033001
S. Bourelle, Xie Zhang, Sascha Feldmann, Baiyu Zhang, Angus Mathieson, Lissa Eyre, Haralds Āboliņš, T. Winkler, C. G. van de Walle, F. Deschler
{"title":"Energy Level Gradients from Surface to Bulk in Hybrid Metal-Halide Perovskite Thin Films","authors":"S. Bourelle, Xie Zhang, Sascha Feldmann, Baiyu Zhang, Angus Mathieson, Lissa Eyre, Haralds Āboliņš, T. Winkler, C. G. van de Walle, F. Deschler","doi":"10.1103/prxenergy.3.033001","DOIUrl":"https://doi.org/10.1103/prxenergy.3.033001","url":null,"abstract":"Variations in local strain, defect densities, and composition of hybrid metal-halide perovskites have been reported to create heterogeneous energy landscapes in thin films, which impact charge-carrier diffusion and recombination dynamics. Here, we employ one- and two-photon transient absorption spectroscopy to selectively probe the dynamics of charge carriers from surface and bulk regions of methylammonium lead bromide thin films. Differences in the transient absorption spectra indicate that an energy gradient of approximately 100 meV is formed between the higher band-gap surface and lower band-gap bulk regions. Thus, during their lifetime, photoexcited carriers move away from the surface to recombine in the bulk, where our experiments detect long-lived charge populations despite the significant band splitting that has conventionally been assumed to inhibit efficient radiative recombination. Supported by first-principles calculations, we demonstrate that bright emission can still arise from the bulk with states that occupy a wide range of momenta in the vicinity of the band extrema, which show strong dipole transitions. Our results report that photoexcitations in the hybrid perovskites avoid defect-rich surface regions, and that particularly strong emission is generated from accumulated excitation populations in the bulk.\u0000 \u0000 \u0000 \u0000 \u0000 Published by the American Physical Society\u0000 2024\u0000 \u0000 \u0000","PeriodicalId":497486,"journal":{"name":"PRX Energy","volume":"14 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141802005","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}
PRX EnergyPub Date : 2024-04-09DOI: 10.1103/prxenergy.3.023001
Jun Huang
{"title":"Correlation between Electrocatalytic Activity and Impedance Shape: A Theoretical Analysis","authors":"Jun Huang","doi":"10.1103/prxenergy.3.023001","DOIUrl":"https://doi.org/10.1103/prxenergy.3.023001","url":null,"abstract":"","PeriodicalId":497486,"journal":{"name":"PRX Energy","volume":"63 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140723705","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}
PRX EnergyPub Date : 2024-02-13DOI: 10.1103/prxenergy.3.013007
Simon Gelin, Nicole E. Kirchner-Hall, Rowan R. Katzbaer, M. J. Theibault, Yihuang Xiong, Wayne Zhao, Mohammed M. Khan, Eric Andrewlavage, P. Orbe, Steven M. Baksa, Matteo Cococcioni, I. Timrov, Q. Campbell, Héctor Abruña, R. Schaak, I. Dabo
{"title":"Ternary Oxides of s- and p-Block Metals for Photocatalyt","authors":"Simon Gelin, Nicole E. Kirchner-Hall, Rowan R. Katzbaer, M. J. Theibault, Yihuang Xiong, Wayne Zhao, Mohammed M. Khan, Eric Andrewlavage, P. Orbe, Steven M. Baksa, Matteo Cococcioni, I. Timrov, Q. Campbell, Héctor Abruña, R. Schaak, I. Dabo","doi":"10.1103/prxenergy.3.013007","DOIUrl":"https://doi.org/10.1103/prxenergy.3.013007","url":null,"abstract":"","PeriodicalId":497486,"journal":{"name":"PRX Energy","volume":"74 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139781408","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}
PRX EnergyPub Date : 2024-02-13DOI: 10.1103/prxenergy.3.013007
Simon Gelin, Nicole E. Kirchner-Hall, Rowan R. Katzbaer, M. J. Theibault, Yihuang Xiong, Wayne Zhao, Mohammed M. Khan, Eric Andrewlavage, P. Orbe, Steven M. Baksa, Matteo Cococcioni, I. Timrov, Q. Campbell, Héctor Abruña, R. Schaak, I. Dabo
{"title":"Ternary Oxides of s- and p-Block Metals for Photocatalyt","authors":"Simon Gelin, Nicole E. Kirchner-Hall, Rowan R. Katzbaer, M. J. Theibault, Yihuang Xiong, Wayne Zhao, Mohammed M. Khan, Eric Andrewlavage, P. Orbe, Steven M. Baksa, Matteo Cococcioni, I. Timrov, Q. Campbell, Héctor Abruña, R. Schaak, I. Dabo","doi":"10.1103/prxenergy.3.013007","DOIUrl":"https://doi.org/10.1103/prxenergy.3.013007","url":null,"abstract":"","PeriodicalId":497486,"journal":{"name":"PRX Energy","volume":"573 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139841303","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}
PRX EnergyPub Date : 2024-02-08DOI: 10.1103/prxenergy.3.013006
R. Lomas-Zapata, K. McKenna, Q. M. Ramasse, R.E. Williams, L. J. Phillips, K. Durose, J. Major, B. Mendis
{"title":"Grain-Boundary Structural Relaxation in Sb2Se3 Thin-Film Photovoltaics","authors":"R. Lomas-Zapata, K. McKenna, Q. M. Ramasse, R.E. Williams, L. J. Phillips, K. Durose, J. Major, B. Mendis","doi":"10.1103/prxenergy.3.013006","DOIUrl":"https://doi.org/10.1103/prxenergy.3.013006","url":null,"abstract":"","PeriodicalId":497486,"journal":{"name":"PRX Energy","volume":" 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139791244","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}
PRX EnergyPub Date : 2024-02-08DOI: 10.1103/prxenergy.3.013006
R. Lomas-Zapata, K. McKenna, Q. M. Ramasse, R.E. Williams, L. J. Phillips, K. Durose, J. Major, B. Mendis
{"title":"Grain-Boundary Structural Relaxation in Sb2Se3 Thin-Film Photovoltaics","authors":"R. Lomas-Zapata, K. McKenna, Q. M. Ramasse, R.E. Williams, L. J. Phillips, K. Durose, J. Major, B. Mendis","doi":"10.1103/prxenergy.3.013006","DOIUrl":"https://doi.org/10.1103/prxenergy.3.013006","url":null,"abstract":"","PeriodicalId":497486,"journal":{"name":"PRX Energy","volume":"126 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139850993","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}
PRX EnergyPub Date : 2024-01-23DOI: 10.1103/prxenergy.3.013004
Ashok S Menon, Nickil Shah, James A. Gott, Eleni Fiamegkou, Matthew J. W. Ogley, G. P. Páez Fajardo, Naoum Vaenas, Ieuan Ellis, N. Ravichandran, P. Cloetens, D. Karpov, J.M. Warnett, Paul Malliband, David Walker, Geoff West, Melanie Loveridge, L. Piper
{"title":"Quantifying Electrochemical Degradation in Single-Crystalline LiNi0.8Mn","authors":"Ashok S Menon, Nickil Shah, James A. Gott, Eleni Fiamegkou, Matthew J. W. Ogley, G. P. Páez Fajardo, Naoum Vaenas, Ieuan Ellis, N. Ravichandran, P. Cloetens, D. Karpov, J.M. Warnett, Paul Malliband, David Walker, Geoff West, Melanie Loveridge, L. Piper","doi":"10.1103/prxenergy.3.013004","DOIUrl":"https://doi.org/10.1103/prxenergy.3.013004","url":null,"abstract":"","PeriodicalId":497486,"journal":{"name":"PRX Energy","volume":"19 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139603179","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}
PRX EnergyPub Date : 2024-01-12DOI: 10.1103/prxenergy.3.013002
D. Madsen, Jan Petter Hansen, Jan Emblemsvåg
{"title":"Population-Density Bounds for 100% Domestic Renewable Energy Generation","authors":"D. Madsen, Jan Petter Hansen, Jan Emblemsvåg","doi":"10.1103/prxenergy.3.013002","DOIUrl":"https://doi.org/10.1103/prxenergy.3.013002","url":null,"abstract":"","PeriodicalId":497486,"journal":{"name":"PRX Energy","volume":" 22","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139625191","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}
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