ARMAX-based method for inertial constant estimation of generation units using synchrophasors

Autor(es)

Lugnani, Lucas ^[1] ; Dotta, Daniel ^[1] ; Lackner, Christoph ^[2] ; Chow, Joe ^[2]

Afiliação do(s) autor(es)

^[1] Univ Campinas UNICAMP, BR-13083852 Campinas, SP - Brazil

^[2] Rensselaer Polytech Inst, Troy, NY 12180 - USA

• Tipo de documento: Artigo Científico
• Fonte: Electric Power Systems Research; v. 180, MAR 2020.
• Citações Web of Science: 0

Resumo

With the increase of wind and solar power plants connected to the grid, frequency stability has become a concern for transmission system operators. The large penetration of these sources reduces the inertia of the system, which naturally reacts to active power perturbations. In this scenario, a method capable of estimating the inertia constant, as perceived by a particular bus, is of practical importance. This paper presents a novel methodology to automatically assess the power system inertial constant using an autoregressive moving average exogenous input (ARMAX) model and demonstrate it using power system disturbance responses measured by a Wide-Area Measurement System (WAMS). The proposed approach can be divided into three parts: (i) Time window selection, which includes the identification of the start of the disturbance as well as the inertial response; (ii) A low-order ARMAX model method to estimate the constant of inertia as perceived by a particular bus; (iii) Accuracy evaluation. The proposed method is evaluated considering simulated signals corrupted with noise and outliers as well as real measurements from the New York transmission system. (AU)

• Processo FAPESP: 19/10033-0 - Desenvolvimento de metodologia baseada em dados para a melhoria da operação de SEEs com alta-penetração de geração eólica/solar
• Beneficiário: Daniel Dotta
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 16/08645-9 - Pesquisas interdisciplinares em redes inteligentes de energia elétrica
• Beneficiário: João Bosco Ribeiro do Val
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 18/07375-3 - Operação de SEE com alta penetração de geração eólica
• Beneficiário: Daniel Dotta
• Modalidade de apoio: Bolsas no Exterior - Pesquisa