Study of HVDC-based Offshore Wind Farm Performance under New Zealand Context

The imperative to transition towards renewable energy sources has catalyzed global interest in harnessing offshore wind energy, owing to its immense potential to boost sustainable electricity generation. However, integrating offshore wind farms into existing power grids poses formidable challenges, encompassing grid stability, power quality, and fault management. Nonetheless, the integration of offshore wind farms (OWF) with the power grid presents a significant opportunity for advancing renewable energy generation on a large scale. This study embarks on an exploration of the intricate dynamics and performance metrics inherent in the integration of OWF with onshore grids (OnG), particularly focusing on the interaction between a 480 MW Offshore high-voltage direct current (HVDC) system and the modified IEEE 39-bus network. The study incorporates a comprehensive wind generation profile from a 10-minute to 24-hourly timescale synthetic wind speed dataset for actual or proposed New Zealand wind farm sites, as well as load profiles, to provide a robust basis for analysis. Utilizing detailed modeling and analysis, this research delves into the nuanced aspects of offshore wind farm integration, shedding light on key factors such as grid stability, power flow dynamics, and system reliability.