208 ASSESSMENT OF THE FUTURE FLEXIBILITY NEEDS OF THE MACEDONIAN POWER SYSTEM

Stojan Malčeski; Sime Kuzarevski; Jovica Vuletić; Jordanco Angelov; Mirko Todorovski

Stojan Malčeski Electricity Transmission System Operator of the Republic of Macedonia, 1000 Skopje, Republic of Macedonia
Sime Kuzarevski Electricity Transmission System Operator of the Republic of Macedonia, 1000 Skopje, Republic of Macedonia
Jovica Vuletić Faculty of Electrical Engineering and Information Technologies, “Ss. Cyril and Methodius” University in Skopje, Rugjer Bošković bb, P.O.Box 574, 1001 Skopje, Republic of Macedonia
Jordanco Angelov Faculty of Electrical Engineering and Information Technologies, “Ss. Cyril and Methodius” University in Skopje, Rugjer Bošković bb, P.O.Box 574, 1001 Skopje, Republic of Macedonia
Mirko Todorovski Faculty of Electrical Engineering and Information Technologies, “Ss. Cyril and Methodius” University in Skopje, Rugjer Bošković bb, P.O.Box 574, 1001 Skopje, Republic of Macedonia

Keywords: Power System Flexibility, Power System Inertia, RES integration, Market Simulation

Abstract

To achieve the strategic goals in the energy sector during the ascension path towards the European Union, North Macedonia has set ambitious goals in the Macedonian strategic framework for the power sector. Namely, the investment plans in conventional generation technologies are ambiguous, while the planned investments in variable renewable energy sources (VRES) are quick paced. Furthermore, with interest in VRES investment with total installed capacities above the hourly load during hours of maximal VRES generation, it is crucial to assess the future flexibility needs of the Macedonian power system. This paper uses multiple metrics to obtain a high-level estimate of the system inertia and flexibility needs of the Macedonian power system on a mid-term planning horizon. The system inertia and flexibility need estimates are calculated using a multi-scenario approach where the model dispatch is calculated using a Monte Carlo optimization on a market model enclosing Southeast Europe. The obtained results give a high-level estimate of the evolution of flexibility needs and system inertia of the Macedonian power system on a mid-term planning horizon.