Yang Zhangbin, Li Gang, Ding Yiwei, Peng Daixiao, Zou Kaikai, Ruan Lin
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Analysis and suppression of offshore wind power broadband oscillation based on HVDC transmission technology
This paper explores the dynamics of large-scale offshore wind farms comprised of full-power variable frequency wind turbines, interconnected with VSC-HVDC (voltage source converter-based high-voltage direct current) converter stations. These systems are susceptible to broad frequency oscillations due to the rapid response characteristics of power electronic devices, potentially compromising their operational safety and stability under various conditions. To mitigate the impact of these oscillations on offshore wind turbines and the connected systems, the study first outlines the structure and operational mode of the offshore wind power electronic system with VSC-HVDC transmission. It then analyzes the mechanisms underlying these broad frequency oscillations. Subsequently, the paper presents a model construction and stability analysis for wind farms and transmission systems. It specifically focuses on offshore wind power systems based on symmetric monopolar topology, involving multiple branches and multiple wind farm access points. The research includes an in-depth oscillation analysis, supported by real-world case studies, demonstrating that strategically optimized control and protection strategies can effectively reduce the oscillation risks associated with wind farms connected through VSC-HVDC systems, thereby ensuring their safe and stable operation.
期刊介绍:
The journal “Electrical Engineering” following the long tradition of Archiv für Elektrotechnik publishes original papers of archival value in electrical engineering with a strong focus on electric power systems, smart grid approaches to power transmission and distribution, power system planning, operation and control, electricity markets, renewable power generation, microgrids, power electronics, electrical machines and drives, electric vehicles, railway electrification systems and electric transportation infrastructures, energy storage in electric power systems and vehicles, high voltage engineering, electromagnetic transients in power networks, lightning protection, electrical safety, electrical insulation systems, apparatus, devices, and components. Manuscripts describing theoretical, computer application and experimental research results are welcomed.
Electrical Engineering - Archiv für Elektrotechnik is published in agreement with Verband der Elektrotechnik Elektronik Informationstechnik eV (VDE).