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Uncertainty cost of stochastic producers: metrics and impacts on power grid flexibility
, Article IEEE Transactions on Engineering Management ; Volume 69, Issue 3 , 2022 , Pages 708-719 ; 00189391 (ISSN) ; Hosseini, S. H ; Dehghanian, P ; Shittu, E ; Fotuhi Firuzabad, M ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2022
Abstract
The widespread presence of contingent generation, when coupled with the resulting volatility of the chronological net-load (i.e., the difference between stochastic generation and uncertain load) in today's modern electricity markets, engender the significant operational risks of an uncertain sufficiency of flexible energy capacity. In this article, we address several operational flexibility concerns that originate from the increase in generation variability captured within a security-constrained unit commitment (SCUC) formulation in smart grids. To quantitatively assess the power grid operational flexibility capacity, we first introduce two reference operation strategies based on a two-stage...
Evaluation of the performance and temperature susceptibility of gilsonite- and SBS-modified asphalt binders
, Article Construction and Building Materials ; Volume 207 , 2019 , Pages 679-692 ; 09500618 (ISSN) ; Ameri, M ; Amini, A ; Sabouri, M ; Norouzi, A ; Sharif University of Technology
Elsevier Ltd
2019
Abstract
This study investigated the effect of gilsonite and Styrene-Butadiene-Styrene (SBS) as asphalt binder modifiers on the physical and rheological properties of asphalt binders. For this, binder tests such as penetration test, softening point, rotational viscosity (RV), Dynamic Shear Rheometer (DSR), and Bending Beam Rheometer (BBR) were conducted on the neat and modified binders. The effect of gilsonite and SBS on the binder temperature susceptibility was also investigated by measuring Penetration Index (PI), Activation Energy (AE) and Viscosity-Temperature Susceptibility (VTS) of all the study binders. Fourier-Transform Infrared Spectroscopy (FTIR) test was directed toward investigation of...