Equivalent impedance method to access the impact of multi wind parks connected to the same point of connection to power system - a case study

When more than one wind park is connected at the same point in the grid, the assessment of their combined interaction with the power system becomes more complex than the techniques usually employed to address these interactions. In this sense, the use of the equivalent impedance method allows assessing these interactions, by measuring the impedance at the connection point. The measurement of the equivalent impedance associated with Vector Fitting technique allows identifying potential resonance and stability issues without requiring the full internal details of each component. This study employs an impedance-based approach for small-signal stability analysis, where the impedance model is derived using the frequency scanning technique.