Piotr Suchorolski
supervisor: Adam Smolarczyk
The research problem is related to ferroresonance oscillations that appear in medium voltage grids (especially in grids with isolated neutral point) cooperating with wind farms and photovoltaic farms.
As part of the research issue, it is necessary to identify the specific operating conditions of wind farm grid and photovoltaic grid, in which the unfavorable ferroresonance phenomenon may arise. Then, the influence of ferroresonant oscillations on the operation of protection automatics installed in such grids should be investigated and determined. The analysis would cover under investigation those protection functions, that the operation criteria of which turn out to be sensitive to the disturbance (ferroresonance oscillations).
The results of the work would be used to indicate methods to prevent or minimize the adverse impact of the disturbance and to develop algorithm (and device), which can be applied in or cooperate with existing protection devices, that can selectively detect and quckly damp ferroresonant oscillations, eventualy preventing protection relays from false operation.