Fast contingency screening for voltage stability analysis considering both SNBs and SIBs

Autor(es)

Neves, Lucas Sales ; Costa Alberto, Luis Fernando ; Chiang, Hsiao-Dong

• Tipo de documento: Artigo Científico
• Fonte: Electric Power Systems Research; v. 213, p. 6-pg., 2022-08-13.

Resumo

Polynomial extrapolation usually leads to crude approximations of the so-called nose curves due to the nonlinear nature of power system operational limits. In particular, these polynomial approximations fail to obtain estimates of the voltage stability margin when the system is subject to structure-induced bifurcations. This paper proposes smoothing out power flow equations to deal with structure-induced bifurcations and verifies the validity of a quadratic approximation of a smooth nose curve in estimating load margin for contingency screening and ranking in voltage stability analysis. Tests of the proposed method in large power systems revealed that an appropriate smooth power flow model can indeed result in better estimates of the exact contingency ranking as compared to the estimates obtained with the original power flow equations. (AU)

• Processo FAPESP: 14/50851-0 - INCT 2014: Instituto Nacional de Ciência e Tecnologia para Sistemas Autônomos Cooperativos Aplicados em Segurança e Meio Ambiente
• Beneficiário: Marco Henrique Terra
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 18/20104-9 - Monitoramento via sincrofasores, análise de segurança dinâmica e controle de redes elétricas do futuro
• Beneficiário: Luís Fernando Costa Alberto
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 18/24815-7 - Métodos rápidos de seleção de controles preventivos e corretivos em sistemas elétricos de potência considerando incertezas de carregamento
• Beneficiário: Lucas Sales Neves
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto