Analysis of Sub-synchronous Oscillation of Wind Farm with MMC-HVDC System
Due to the interaction between the modular multilevel converter (MMC) station and wind farms, various oscillations occur in the offshore wind farm with the modular multilevel converter-based high-voltage direct current (MMC-HVDC). In contrast to two-level converters, the nonlinear dynamics of the arm capacitance and the circulating currents result in the inherent time-periodic characteristic of MMC. Based on the linear time-periodic (LTP) method, this paper presents a small-signal model that preserves the original time-varying dynamics. Then, the effect of generation power, controllers, and their interaction on the sub-synchronous oscillations (SSO) of the system is investigated. Finally, the time-domain responses of the detailed nonlinear model are used to validate the accuracy of the analysis.
Authors
- Zhaolin Zhang (ORCID: https://orcid.org/0000-0001-6150-5326)
- Zeren Guo (ORCID: https://orcid.org/0000-0003-2453-6232)
- Zefei Wu (ORCID: https://orcid.org/0000-0001-7123-9156)
- Shi-Long Liu (ORCID: https://orcid.org/0000-0002-6308-4059)
- J.S. Kui
- Hui Qin (ORCID: https://orcid.org/0000-0002-8805-0015)
- Buyang Du (ORCID: https://orcid.org/0009-0001-5262-9033)
- Yingbiao Li (ORCID: https://orcid.org/0000-0003-2958-5607)
- Wenxi Tian
- Xin Lin (ORCID: https://orcid.org/0009-0005-3714-765X)
- Guojie Zhao (ORCID: https://orcid.org/0009-0000-0022-5128)
Institutions
- Huazhong University of Science and Technology (CN)
- China Southern Power Grid (China) (CN)
Publication Details
- Published
- 2024-11-29
- DOI
- https://doi.org/10.1109/ei264398.2024.10990647
- Primary Topic
- High-Voltage Power Transmission Systems
- Type
- article
- Field-Weighted Citation Impact
- 0.00