In a significant advancement for the offshore wind power sector, researchers have introduced a new power flow calculation method that leverages diode rectifier units (DRUs) to enhance the efficiency and reliability of voltage-source converter high-voltage direct current (VSC-HVDC) transmission systems. This innovative approach, spearheaded by Xu Feng from the State Grid Zhejiang Electric Power Co., Ltd. Research Institute in Hangzhou, promises to reshape how we integrate far offshore wind power into existing grids.
The offshore wind industry is poised for explosive growth, driven by the global push for renewable energy sources. However, the challenge of efficiently transmitting power generated from these distant installations has been a significant barrier. Xu Feng’s research addresses this by proposing a steady-state power flow calculation method that incorporates grid-forming (GFM) wind turbines alongside DRUs. This combination not only optimizes economic efficiency but also enhances system reliability, a crucial factor for stakeholders in the energy sector.
“The integration of DRUs at rectifier stations allows for better management of reactive power, which is vital for maintaining system stability,” Xu noted. The study delves into the operational characteristics of AC transmission systems, analyzing both low-frequency and intermediate-frequency scenarios. By focusing on the reactive power imbalance at the DRU-based converter stations, the proposed method iteratively adjusts power flow to align with the unique Q-f (reactive power-frequency) droop control strategy utilized by GFM wind turbines.
The implications of this research extend beyond technical enhancements. By improving the economic viability of offshore wind projects, this method could attract more investment into the sector, ultimately leading to lower energy costs for consumers and a more robust renewable energy infrastructure. As offshore wind farms become increasingly essential in meeting global energy demands, innovations like Xu’s are critical in facilitating their integration into national grids.
The research findings, published in ‘Zhejiang dianli’ (translated as ‘Zhejiang Electric Power’), underscore a pivotal moment in the transition to sustainable energy. With the potential to streamline operations and reduce costs, this method not only enhances the reliability of offshore wind power systems but also sets the stage for future advancements in renewable energy technologies.
For more information on this groundbreaking research, visit State Grid Zhejiang Electric Power Co., Ltd. Research Institute.
