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Grid voltage control strategies at the Coo pumped storage hydroelectric power plant : voltage stability and reactive power capability analysis

Ngenyi-Ngondo, Raphaƫl
(2023)

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Details

Supervisors
De Jaeger, Emmanuel
Faculty
Ecole polytechnique de Louvain
Degree label
Master [120] : ingƩnieur civil Ʃlectricien, Ơ finalitƩ spƩcialisƩe
Abstract
Regarding the evolution of the power transmission network, the way in which voltage control has historically been carried out by power plants needs to be reviewed, and new means of voltage control have to be investigated in the near future. To this end, this thesis investigates the possibilities in terms of voltage control and reactive power management in large power plants and more specifically at the Coo pumped storage hydroelectric power plant. In general, step-up transformers, which can be equipped with on-load tap changers and synchronous machines are the main equipment for the control of reactive power and voltage in power station. This thesis investigates different control strategies to see which parameter influence the reactive power capacity of one generating unit. A voltage stability analysis is also performed. The results concluded that the controllers of these two different devices must not operate according to the same reference value.