Voltage Stability Security Margin
Mostrando 1-5 de 5 artigos, teses e dissertações.
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1. AVALIAÇÃO E REFORÇO DAS CONDIÇÕES DE ESTABILIDADE DE TENSÃO EM BARRAS DE TENSÃO CONTROLADA POR GERADORES E COMPENSADORES SÍNCRONOS / VOLTAGE STABILITY ASSESSMENT AND ENHANCEMENT IN VOLTAGE-CONTROLLED BUSES BY SYNCHRONOUS GENERATORS AND COMPENSATORS
After the incidence of some voltage collapses in the energy transmission systems in the world, the voltage security became an issue of great interest in the last years due to the importance of its impact. The phenomenon of voltage stability is due to the excessive active and reactive power flow in the electrical transmission network and has been associated w
Publicado em: 2009
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2. Computation of voltage stability margins of power systems / Obtenção da margem minima de estabilidade de tensão de sistemas eletricos de potencia
This work presents a new and fast method for computing the minimum voltage stability margin of electric power systems. The computation of the voltage stability margin (VSM) is often required for the planning and operation of power systems. Usually, loads are increased along a predefined direction, which can be estimated based on historical data or load forec
Publicado em: 2007
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3. Assessment of voltage stability critical areas of São Paulo State transmission network / Analise da estabilidade de tensão e areas criticas da rede eletrica do Estado de São Paulo
This work investigates the security level of the transmission network of the State of São Paulo with respect to the occurrence of voltage collapse. A number of credible scenarios including base cases (N-0) and single contingency (N-1) cases are considered. PV curve methods are employed for evaluating the voltage stability margin for the selected set of oper
Publicado em: 2006
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4. Preventive control strategies for maintaining secure on-line voltage stability margins / Estrategias de controle preventivo para a manutenção de margens de segurança com relação a estabilidade de tensão em tempo real
O problema de estabilidade de tensão tem recebido uma atenção crescente dos profissionais que atuam na área de análise e operação de sistemas de potência. O aumento das interligações aliado a operação das redes com altos níveis de carregamento torna mais provável a ocorrência de incidentes que podem levá-las à instabilidade de tensão, culmi
Publicado em: 2006
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5. Melhoria das margens de estabilidade de tensão no problema do pre-despacho da operação atraves de corte mínimo de carga
The new philosophy of operating electric power systems exploring their maximum power transfer capability has placed the systems close to their stability limits. Therefore, it is important to assess the distance from the equilibrium point to the system voltage stability limit, and how to keep an adequate security margin from this limit. Considering the import
Publicado em: 2003