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    The impact of dispersed PV generation on ramp rate requirements

    , Article 2012 11th International Conference on Environment and Electrical Engineering, EEEIC 2012 - Conference Proceedings, 18 May 2012 through 25 May 2012, Venice ; 2012 , Pages 977-982 ; 9781457718281 (ISBN) Arabali, A. S ; Dehghanian, P ; Moeini-Aghtaie, M ; Abbaspour, A ; Sharif University of Technology
    IEEE  2012
    Abstract
    PV generation variability and uncertainty significantly influence operation of the power systems with high penetration of PV sources. The potential impact of distributed PV generation on ramp rate requirements in the IEEE 24-bus system is evaluated in this paper. PV generation and load are, here, probabilistically modeled using actual data and curve fitting approach. Probabilistic unit commitment (UC) based on unit de-commitment method combined with two point estimate method (2-PEM) is used to determine the ramp rate required to compensate for the PV power fluctuations. The proposed method considers stochastic factors and their effects on the dispatch results. Two scenarios are studied to... 

    Estimating abilities of distributed energy resources in providing flexible ramp products for active distribution networks

    , Article Sustainable Cities and Society ; Volume 65 , 2021 ; 22106707 (ISSN) Ghaemi, S ; Salehi, J ; Moeini-Aghtaie, M ; Sharif University of Technology
    Elsevier Ltd  2021
    Abstract
    Growing demand for flexible ramp products (FRPs) to maintain the power balance in active distribution networks (ADNs) has expanded the use of costly fast-start generators in the upstream real-time market. In order to limit the power system's reliance on these units, it is necessary to establish new sources for providing ADNs with FRPs. In this context, the present paper examines the abilities of distributed energy resources (DERs) and active loads for supplying the ramp capacity demands of ADNs. Accordingly, a local real-time market was established in the ADN, empowering several DERs and active loads to provide the network's FRPs demands. The proposed market was formed in the context of a... 

    Estimating abilities of distributed energy resources in providing flexible ramp products for active distribution networks

    , Article Sustainable Cities and Society ; 2020 Ghaemi, S ; Salehi, J ; Moeini Aghtaie, M ; Sharif University of Technology
    Elsevier Ltd  2020
    Abstract
    Growing demand for flexible ramp products (FRPs) to maintain the power balance in active distribution networks (ADNs) has expanded the use of costly fast-start generators in the upstream real-time market. In order to limit the power system's reliance on these units, it is necessary to establish new sources for providing ADNs with FRPs. In this context, the present paper examines the abilities of distributed energy resources (DERs) and active loads for supplying the ramp capacity demands of ADNs. Accordingly, a local real-time market was established in the ADN, empowering several DERs and active loads to provide the network's FRPs demands. The proposed market was formed in the context of a...