Unit commitment with frequency‐arresting adequacy constraint: Modelling and pricing aspects

• Published in: IET generation, transmission & distribution Vol. 16; no. 24; pp. 4924 - 4935
• Main Authors: Davari Nejad, Ehsan, Hesamzadeh, Mohammad Reza, Orostica, Hector Chavez
• Format: Journal Article
• Language: English
• Published: Wiley 01.12.2022
• Subjects: Constraints models; Costs; Integer programming; Linear program models; Market design; Mixed integer linear program; Mixed integer-linear programmes; Operation of power system; Power; Renewable energies; Renewable energy resources; Sustainable markets; Unit Commitment
• ISSN: 1751-8687; 1751-8695; 1751-8695
• DOI: 10.1049/gtd2.12641

Frequency‐arresting (FA) adequacy has received an increasing attention in operation of power systems with intermittent, electronically connected wind and sfolar generation. Presence of high penetration of renewable energy leads to reduced amount of inertia in the power system and the need for more sustainable market design. This paper addresses the FA adequacy by integrating Nadir and rate of change of frequency constraints in unit commitment formulation. Here, a mixed‐integer linear program (MILP) is proposed for addressing the FA adequacy. The proposed MILP model of FA adequacy is non‐convex and accordingly, FA adequacy pricing requires non‐convex pricing techniques. The explicit and implicit uplift payment techniques are proposed and implemented for FA adequacy pricing using the authors' proposed MILP model. The primal–dual formulation is employed for implicit uplift technique. The proposed MILP model of FA adequacy along with its pricing techniques is carefully studied through an illustrative example system. For further discussions, the Nordic 44‐node test network is studied.