The rising percentage of inverter-based generation poses new challenges to the grid. Approaching a majority share of inverter-based generation, technical issues in grid operation and the contribution to grid stability have to be analysed. A measurement campaign in a wind farm has been carried out in order to investigate the performance of a wind farm and its interaction with the grid. Due to a long feeder, the short-circuit power at the connection point of the wind farm was low. The results are used to recognise technical challenges and to find adequate solutions. The main objective of this study is an evaluation of the wind farm performance and a comprehensive comparison with requirements of grid codes and guidelines to contribute to reactive power balance and system stability.