Viability of including frequency metrics in short-term scheduling of island power systems

M. Rajabdorri, E. Lobato, L. Sigrist

International Conference on Control System, Power and Electrical Engineering - ICCSPEE 2021, Istanbul (Turkey). 05 diciembre 2021

Summary:

In the current practice of short-term power scheduling, reserve power is used as a tool to address generation mismatch and contingencies. The practice is starting to fall short especially in smaller power systems, as the injection of uncertain renewable sources is growing, there is already a scarcity of primary frequency response, and any contingency leads to relatively big power mismatches. This paper points out the inadequacy of current practice to sufficiently guarantee the frequency dynamic quality after outages. First the UC problem is solved for different levels of reserve requirement. Then a coherent data-set is obtained by simulating the System Frequency Response (SFR) of single outages. The results of the SFR model are statistically analyzed to prove that there are more correlated representatives of frequency quality, compared to the amount of reserve that is used in the current practice.

Spanish layman's summary:

Los resultados de este documento demuestran la insuficiencia de la práctica actual para garantizar suficientemente la calidad dinámica de la frecuencia después de las interrupciones, resolviendo el problema de UC del día para diferentes niveles de reserva y simulando cada interrupción con modelo SFR.

English layman's summary:

Results of this paper prove the inadequacy of current practice to sufficiently guarantee the frequency dynamic quality after outages, by solving day-ahead UC problem for different reserve levels and simulating every single outage with a SFR model

Keywords: System Inertia, Reserve Requirement, System Frequency Model, Robust Optimization.

DOI: IJIEEE-IRAJ-DOI-18367

Publication date: December 2021.

Citation:
Rajabdorri, M., Lobato, E., Sigrist, L., Viability of including frequency metrics in short-term scheduling of island power systems, International Conference on Control System, Power and Electrical Engineering - ICCSPEE 2021, Istanbul (Turkey). 05 December 2021.

IIT-21-196C