Improving Dynamic Security in Islanded Power Systems: Quantification of Minimum Synchronous Inertia Considering Fault-Induced Frequency Deviations

• Tipo: Artigo em Revista Científica Internacional
• Data: 2023

Autores

Gouveia, J (Autor) Outra; C. L. Moreira (Autor) FEUP; João Peças Lopes (Autor) FEUP

Revista

A Revista está pendente de validação pelos Serviços Administrativos.

Título: ELECTRICITY

Vol. 4

Páginas: 114-133

ISSN: 2673-4826

Indexação

ISI Web of Knowledge - 2 Citações

Scopus - 2 Citações

Outras Informações

ID Authenticus: P-00Y-8QC

DOI: 10.3390/electricity4020008

Abstract (EN): In isolated power systems with very high instantaneous shares of renewables, additional inertia should be used as a complementary resource to battery energy storage systems (BESSs) for improving frequency stability, which can be provided by synchronous condensers (SCs) integrated into the system. Therefore, this paper presents a methodology to infer the system dynamic security, with respect to key frequency indicators, following critical disturbances. Of particular interest is the evidence that multiple short-circuit locations should be considered as reference disturbances regarding the frequency stability in isolated power grids with high shares of renewables. Thus, an artificial neural network (ANN) structure was developed, aiming to predict the network frequency nadir and Rate of Change of Frequency (RoCoF), considering a certain operating scenario and disturbances. For the operating conditions where the system frequency indicators are violated, a methodology is proposed based on a gradient descent technique, which quantifies the minimum amount of additional synchronous inertia (SCs which need to be dispatch) that moves the system towards its dynamic security region, exploiting the trained ANN, and computing the sensitivity of its outputs with respect to the input defining the SC inertia.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 20