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Alternative Adequacy Indicators to Complement the LOLE in Power Systems with a Large Share of Renewable Energy Sources

par Avdijaj, Butrint ;Labeau, Pierre-Etienne ;Henneaux, Pierre
Référence 2024 International Conference on Renewable Energies and Smart Technologies (REST 2024)(59987: 27-28 June 2024: Prishtina, Kosovo), 2024 International Conference on Renewable Energies and Smart Technologies (REST 2024), Vol. 1, page (222)
Publication Publié, 2024-08-30

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Résumé :

The most common reliability standard (RS) used to define the desired level of adequacy of power systems is the loss of load expectation (LOLE). Nevertheless, its relevance is questioned due to the massive integration of variable renewable energy sources (RES) and storage in current power systems. This paper studies the relevance of the loss of load expectation (LOLE) and of alternative adequacy indicators for such power systems. The different shortcomings of the LOLE are presented and other adequacy indicators being able to address these gaps are looked at. The main issue with LOLE is that it does not give any indication on the distribution and the magnitude of the different load sheddings. In order to fix these problems, the expected power unsupplied (EPU) and conditional value at risk (CVaR) are chosen to complement the LOLE. The former ensures that the shortfalls are not too consequent, while the latter checks if the average of the worst shortfalls do not reach vital structure. These indicators are based on national load shedding plans.