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A Study of Voltage Ride-through Capability of an Offshore Wind Farm During Grid Fault Considering STATCOM Enhancement

With the wide-spread deployment of wind generation in the power grid, the traditional generation mix has been changed drastically. Nowadays, the uncertainty and intermittency of wind generation output are extremely challenging tasks to electric utilities. Therefore, to enhance the stable and reliable operation of the grid with high penetration of wind generation, many countries have established low and high voltage ride-through (LVRT/HVRT) requirements for wind farms in the grid codes. This paper presents a study of an actual offshore wind farm to assess the associated LVRT/HVRT capability. The test system under study is established based on the offshore wind farm developed near the central west coast of Taiwan by using DigSILENT PowerFactory to perform simulations and then analyze the performance of LVRT/HVRT capability of the wind farm. Simulation results show that the offshore wind farm needs a reactive compensation plan such as static reactive power compensator (STATCOM) to meet the voltage ride-through grid codes.