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Volume 19
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Article

Coordinated Strategy to Improve Post-Fault Characteristics of Hybrid Multi-Infeed HVDC Transmission System

by
Bingjie Jin
1,
Guangjian Zhang
1,*,
Zuohong Li
1,
Shuxin Luo
1,
Hong Dong
2,
Chu Jin
1,
Jindi Luo
3 and
Xinyue Zhang
1
1
Power Grid Planning and Research Center, Guangdong Power Grid Co., Ltd., Guangzhou 510080, China
2
Guangzhou Power Supply Bureau, Guangdong Power Grid Co., Ltd., Guangzhou 510620, China
3
Shantou Power Supply Bureau, Guangdong Power Grid Co., Ltd., Shantou 515000, China
*
Author to whom correspondence should be addressed.
Energies 2026, 19(1), 218; https://doi.org/10.3390/en19010218
Submission received: 21 November 2025 / Revised: 19 December 2025 / Accepted: 25 December 2025 / Published: 31 December 2025
(This article belongs to the Special Issue Power Systems: Stability Analysis and Control)
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Abstract

The characteristics of the dynamic reactive power demand of a hybrid multi-infeed HVDC transmission system during the post-fault recovery period are analyzed and a coordinated control strategy to improve the fault recovery characteristics of the hybrid multi-infeed HVDC transmission system is proposed in this paper. During the process of fault recovery, the LCC-HVDC adopts a progressive staggering recovery strategy. At the same time, according to the reactive power shortage of LCC-HVDC, the dynamic power limiter is used to adjust the upper and lower limit values of the outer loop power controller of VSC-HVDC, and the reactive power generated by the VSC-HVDC can be rapidly adjusted. Therefore, the problem of excessive reactive power demand during the recovery process can be solved and the reactive power demand can be satisfied with the proposed strategy. Moreover, the ability of VSC-HVDC to provide reactive power support can be fully utilized. Finally, a simulation model of a hybrid tri-infeed HVDC system is built using PSCAD/EMTDC (Version 4.6.2) software to verify the effectiveness of the proposed control strategy.
Keywords: hybrid multi-infeed HVDC transmission system; progressive staggering recovery; dynamic power limiting; recovery characteristic hybrid multi-infeed HVDC transmission system; progressive staggering recovery; dynamic power limiting; recovery characteristic

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MDPI and ACS Style

Jin, B.; Zhang, G.; Li, Z.; Luo, S.; Dong, H.; Jin, C.; Luo, J.; Zhang, X. Coordinated Strategy to Improve Post-Fault Characteristics of Hybrid Multi-Infeed HVDC Transmission System. Energies 2026, 19, 218. https://doi.org/10.3390/en19010218

AMA Style

Jin B, Zhang G, Li Z, Luo S, Dong H, Jin C, Luo J, Zhang X. Coordinated Strategy to Improve Post-Fault Characteristics of Hybrid Multi-Infeed HVDC Transmission System. Energies. 2026; 19(1):218. https://doi.org/10.3390/en19010218

Chicago/Turabian Style

Jin, Bingjie, Guangjian Zhang, Zuohong Li, Shuxin Luo, Hong Dong, Chu Jin, Jindi Luo, and Xinyue Zhang. 2026. "Coordinated Strategy to Improve Post-Fault Characteristics of Hybrid Multi-Infeed HVDC Transmission System" Energies 19, no. 1: 218. https://doi.org/10.3390/en19010218

APA Style

Jin, B., Zhang, G., Li, Z., Luo, S., Dong, H., Jin, C., Luo, J., & Zhang, X. (2026). Coordinated Strategy to Improve Post-Fault Characteristics of Hybrid Multi-Infeed HVDC Transmission System. Energies, 19(1), 218. https://doi.org/10.3390/en19010218

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