Direct method for transient stability assessment of a single wind turbine generator subject to LVRT requirements

Autor(es)

Sohn, Alexandre Prodossimo ^[1] ; Abrantes, Adriano Lima ^[2] ; Costa Alberto, Luis Fernando ^[3]

Afiliação do(s) autor(es)

^[1] Fed Ctr Technol Educ Minas Gerais, Dept Elect, 900 Raymundo Mattoso St, Curvelo - Brazil

^[2] Univ Illinois, Dept Elect & Comp Engn, 306 North Wright St, Urbana, IL 61801 - USA

^[3] Univ Sao Paulo, Dept Elect & Comp Engn, 400 Trabalhador Sao Carlense Ave, Sao Carlos - Brazil

• Tipo de documento: Artigo Científico
• Fonte: IET GENERATION TRANSMISSION & DISTRIBUTION; v. 14, n. 25, p. 6195-6206, DEC 22 2020.
• Citações Web of Science: 0

Resumo

The authors report on a step towards the development of direct methods for transient stability assessment of power systems with integrated wind turbine generators subject to low voltage ride-through constraints. In this study, they propose an approach to assess transient stability of a single wind turbine generator against an infinite bus using an energy function along with an extension of the potential energy boundary surface method. The proposed approach exploits the theory of constrained dynamical systems and the concept of constrained stability region to efficiently estimate critical clearing times taking into account not only the issue of stability due to rotor acceleration but also the issue of operational limit violations, such as low-voltage ride-through curve violations. Very often, wind turbine generators are disconnected due to violation of operational limits, such as under-voltage limits, instead of rotor acceleration. The proposed approach correctly estimates the critical clearing times to avoid operational limit violations, such as the low-voltage ride-through constraint violation, while traditional direct methods would fail to appropriately estimate such clearing times. They illustrate the effectiveness of the proposed approach by means of case studies considering two types of wind turbine generators, the fixed- and limited-variable-speed wind turbine generators. (AU)

• 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