Measured Rare Voltage Sags and Clusters of Sags: Prediction Models Driven by the Intermittence Indices

Autor: G. M. Casolino, M. de Santis, L. Di Stasio, C. Noce, P. Varilone, P. Verde
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: IEEE Open Access Journal of Power and Energy, Vol 11, Pp 231-240 (2024)
Druh dokumentu: article
ISSN: 2687-7910
DOI: 10.1109/OAJPE.2024.3397365
Popis: The field measurement campaigns have revealed that voltage sags also occur as clusters and not only as rare phenomena. The clusters of sags represent a stochastic process due to their time dependence; the rare satisfy the requirements for a Poisson distribution process. To forecast both kinds of sags using the statistics of the measurements, different approaches are required. In this study, a general method for predicting both types of sags is proposed with a procedure that can be implemented automatically. The method uses intermittent indices to distinguish between the sites that have a prevalent number of rare sags and the sites where rare sags and clusters occurred. Based on this means of identification, the technique offers two distinct models for predicting each kind of sag. The final goal is to implement the procedure in a measurement system that can automatically pre-analyze the recorded sags and choose the best technique for prediction depending on the type of sag. The first results were satisfying with forecast errors reduced in comparison with those obtained without the proposed procedure.
Databáze: Directory of Open Access Journals