Utilização do elo de corrente continua para o amortecimento de oscilações eletromecanicas em sistemas eletricos de potencia / Use of the direct current link for the electromechanical oscillations damping in electric power systems

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

This dissertation presents a study about the HVDC (High Voltage Direct Current) link contribution for damping low frequency electromechanical oscillations when Electric Energy System suffers small-signal disturbances. The HVDC link components models were included in the Power Flow method as well as the steady-state characteristics of the dynamic devices (current or power controls modeling). It was utilized the MSP (Power Sensitivity Model) to include the generators dynamic model, automatic voltage regulators, HVDC link current controls to perform the modal analysis. For damping the electromechanical oscillations, it was designed a POD (Power Oscillation Damping Controller) to include a supplementary signal added to reference signal of the rectifier current or power controller, in order to modulate these HVDC link quantities. The design of controller and stability analysis are based on frequency response techniques and modal analysis. The results obtained shown the HVDC link viability for damping electromechanical oscillations

ASSUNTO(S)

sistemas de energia eletrica oscillations stability electric energy systems estabilidade oscilações

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