Hofmann, Lutz
Lade...
2 Ergebnisse
Gerade angezeigt 1 - 2 von 2
- Some of the metrics are blocked by yourconsent settings
Item-typ:Veröffentlichung, Optimization-based operation of island hybrid power systems: a case study in Suðuroy, Faroe IslandsAn optimization-based energy management system (EMS) for the island hybrid power system of Suðuroy on the Faroe Islands is proposed in this paper. Next to balancing generation and load, the aim lies in reducing the operational costs while dealing with uncertainties from the intermittent nature of renewables. This is achieved by a two-layer model predictive control (MPC) approach solving a mixed-integer linear programming problem for unit commitment, as well as a non-linear programming optimal power flow problem for economic dispatch. The setpoints are transferred to the local controllers of the distributed energy resources. Simulations of the MPC strategy show that the utilization of renewables is preferred and, thus, decreasing operational costs are obtained while satisfying operational and security requirements. The proposed EMS is further investigated in quasi-stationary simulations using a simplified model of the Suðuroy power system. It can be observed that after changes of power setpoints and besides small deviations from the predicted values, no stability boundaries are violated.Konferenzbeitrag42 50 - Some of the metrics are blocked by yourconsent settings
Item-typ:Veröffentlichung, Robust Model Predictive Control-Based Energy Management System for the Island Power System of Suðuroy, Faroe Islands(2024); ; ; In this paper a robust Model Predictive Control (MPC)-based Energy Management System (EMS) is developed and investigated for the case study of Suðuroy, Faroe Islands, under uncertainties resulting from real data. This island power system comprises volatile renewable energy sources, synchronous machines and a Battery Energy Storage System (BESS). In the presented robust MPC both uncertainties from the wind farm power and load demand forecasts are considered. Simulation results are derived from data of one week focusing on the diesel generators’ operational costs and the BESS usage. A comparison against a deterministic MPC-based EMS as well as historical grid operation data is performed. In the presented case study it is shown that both the deterministic MPC and the robust MPC provide significant economic benefits compared to the current grid operation. It is also found that the robust MPC achieves similar performance to the deterministic MPC regarding operational costs. Increased robustness gained through higher state of charge of the BESS is not traded for higher operational costs, highlighting the advantages of the robust MPC-based EMS.Konferenzbeitrag71 92