What is it about?
The proposed system incorporates a reinforced current control (RCC) technique at the receiving-end converter station to effectively mitigate power oscillations, HVDC link capacitor voltage ripples, and grid current THD caused by onshore grid voltage deviations. This approach ensures efficient and stable power transfer from offshore DFIG wind farms to the onshore grid. By dynamically compensating for grid disturbances, the RCC enhances system reliability and operational stability. Furthermore, through precise control of the VSC station, the system delivers targeted reactive power support under asymmetrical voltage conditions, thereby improving grid stability, meeting dynamic support requirements, and facilitating secure renewable energy integration.
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Why is it important?
This paper presents a novel reinforced current control (RCC) strategy for HVDC-connected offshore wind farms using DFIGs. Offshore wind energy has immense potential, but its large-scale integration poses challenges such as power pulsations, voltage fluctuations, and transient instabilities, especially under grid disturbances. The proposed RCC method enhances stability, reliability, and power quality by effectively mitigating these issues, ensuring smoother and more secure renewable energy transmission. This contribution is significant for advancing offshore wind technology, enabling efficient large-scale deployment, and strengthening grid resilience, thereby supporting the transition toward sustainable, low-carbon power systems and meeting growing global energy demands.
Perspectives
This research offers a valuable perspective on strengthening the stability of HVDC-connected offshore wind farms, which play a crucial role in global renewable energy growth. The proposed reinforced current control strategy significantly improves the performance and reliability of DFIG-based systems under grid disturbances, ensuring smoother integration of offshore wind power. Beyond immediate technical improvements, this work points toward future innovations in resilient grid control and offshore transmission technologies. In the broader context, it contributes to the long-term objective of building robust, large-scale offshore wind networks capable of meeting rising energy demands and accelerating the transition to a sustainable, decarbonized energy sector.
Rashmi Ranjan Patra
National Institute of Technology Silchar, Assam-788010, India
Read the Original
This page is a summary of: Enhanced power quality in HVDC system integrated offshore DFIG wind power plant under onshore grid voltage imbalances, Journal of Renewable and Sustainable Energy, September 2025, American Institute of Physics,
DOI: 10.1063/5.0282807.
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