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    • Analytical frequency-constrained UC for island power systems 

      Rouco Ferriz, Almudena; Rajabdorri, Mohammad; Lobato Miguélez, Enrique; Sigrist, Lukas (Institute of Electrical and Electronics Engineers; Institute of Electrical and Electronics Engineers (Belgrado, Serbia), 2023-06-29)
      This paper presents a frequency-constrained unit commitment (FCUC) formulation for island power systems. The timely activation of spinning reserve is key to guaranteeing frequency stability in the operation planning phase. ...

    • Impact assessment of FCUC on optimal design of UFLS settings in island power systems 

      Lobato Miguélez, Enrique; Sigrist, Lukas; Rajabdorri, Mohammad; Egido Cortés, Ignacio (Institute of Electrical and Electronics Engineers (Marrakech, Marruecos), 2023-12-22)
      A frequency constrained unit commitment (FCUC) formulates the non-linear, non-convex frequency dynamics to obtain the generation dispatch of island power systems (IPSs). Even with FCUC, under frequency load shedding (UFLS) ...

    • Inclusion of frequency nadir constraint in the unit commitment problem of small power systems using machine learning 

      Rajabdorri, Mohammad; Kazemtabrizi, Behzad; Troffaes, Matthias; Sigrist, Lukas; Lobato Miguélez, Enrique (2023-12-01)
      As the intention is to reduce the amount of thermal generation and to increase the share of clean energy, power systems are increasingly becoming susceptible to frequency instability after outages due to reduced levels of ...

    • Liquid air energy storage model for scheduling purposes in island power systems 

      Rajabdorri, Mohammad; Sigrist, Lukas; Lobato Miguélez, Enrique (2022-10-01)
      Moving towards clean energy generation seems essential. To do so, renewable energy penetration is growing in the power systems. Although energy sources such as wind and solar are clean, they are not available consistently. ...

    • Liquid air energy storage model for scheduling purposes in island power systems 

      Rajabdorri, Mohammad; Sigrist, Lukas; Lobato Miguélez, Enrique (22/09/2022)
      Moving towards clean energy generation seems essential. To do so, renewable energy penetration is growing in the power systems. Although energy sources such as wind and solar are clean, they are not available consistently. ...

    • Robust frequency constrained uc using data driven logistic regression for island power systems 

      Rajabdorri, Mohammad; Lobato Miguélez, Enrique; Sigrist, Lukas (2022-12-01)
      In the current practice of short-term power scheduling, online power reserves are used to address generation mismatches and contingencies. Neither online inertia nor the speed of the committed units is considered in the ...

    • Robust frequency constrained uc using data driven logistic regression for island power systems 

      Rajabdorri, Mohammad; Lobato Miguélez, Enrique; Sigrist, Lukas (01/12/2022)
      In the current practice of short-term power scheduling, online power reserves are used to address generation mismatches and contingencies. Neither online inertia nor the speed of the committed units is considered in the ...

    • Viability of providing spinning reserves by RES in Spanish island power systems 

      Rajabdorri, Mohammad; Sigrist, Lukas; Lobato Miguélez, Enrique; Prats Soriano, María del Carmen; Echavarren Cerezo, Francisco (2021-10-05)
      This paper assesses the viability of providing down and up spinning reserves by renewable energy resources (RES) in island power systems. The process consists of evaluating the impact of providing spinning reserve on the ...