Abstract
In recent years, after the voltage at the grid-connected point drops due to the failure of the wind turbine, there are frequent cascading failures caused by the sudden rise of voltage due to excessive reactive power compensation. In order to enable wind turbines to provide suitable power support in case of grid failure. The wind turbines connected to the grid are required to have LVRT ability and HVRT ability according to the national standard. In this paper, a low-high voltage interlocking FRT strategy for reactive power input control of RSC and GSC by a DFIG is used. The limit values of reactive currents issued by RSC and GSC when chain faults occur and the allocation principles are discussed. It is verified through simulation that the continuous low and high voltage ride-through ability of DFIG during operation can be effectively ensured, which in turn ensures the stable operation of DFIG.
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Acknowledgments
This work was funded by Natural Science Basic Research Plan in Shaanxi Province of China (2023-JC-YB-359), Postdoctoral Research Foundation of China (2020M683685XB) and National Natural Science Foundation of China (U2106218), and by Science and Technology Project of State Grid Shaanxi Electric Power Company Limited 5226KY220013.
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Zhu, D., Cheng, J., Chen, J., Duan, J. (2024). Research on Low and High Voltage Interlocking Fault Ride-Through Control Strategy for Doubly-Fed Wind Turbines. In: Cai, C., Qu, X., Mai, R., Zhang, P., Chai, W., Wu, S. (eds) The Proceedings of 2023 International Conference on Wireless Power Transfer (ICWPT2023). ICWPT 2023. Lecture Notes in Electrical Engineering, vol 1159. Springer, Singapore. https://doi.org/10.1007/978-981-97-0877-2_42
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DOI: https://doi.org/10.1007/978-981-97-0877-2_42
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