https://doi.org/10.1140/epjs/s11734-025-01661-5
Regular Article
Simulation and experiment study on SI-SFCL-based hybrid dc current-limiting circuit
1
School of New Energy and Intelligent Connected Vehicle, Anhui University of Science and Technology, 231131, Hefei, China
2
School of Carbon Neutrality Science and Engineering, Anhui University of Science and Technology, 231131, Hefei, China
3
State Grid Baoding Electric Power Supply Company, 071052, Baoding, China
4
School of Electrical and Information Engineering, Tianjin University, 300072, Tianjin, China
Received:
1
November
2024
Accepted:
25
April
2025
Published online:
12
May
2025
The fault current of a voltage source converter-based high-voltage direct current (VSC-HVDC) system has the characteristics of high amplitude and fast-rising speed. Therefore, the available hybrid dc circuit breaker (HDCCB) faces great challenges in breaking capacity and breaking speed. A saturated iron-core superconducting fault current limiter-based hybrid dc current-limiting circuit (SI-SFCL-HDCCLC) is proposed, which uses the saturated iron-core superconducting current limiter and current-limiting resistor to realize the resistive–inductive compound current limiting, and uses the energy-absorbing resistor to accelerate the fault current clearing and relieve the breaking pressure of HDCCB. In this paper, we will introduce the working principle of the SI-SFCL-HDCCLC theoretically by stages in combination with the coordination strategy of the proposed SI-SFCL-HDCCLC and HDCCB based on the transient characteristics of a dc fault. Then, the principles of the parameter design of the SI-SFCL-HDCCLC are analyzed with mathematical derivation. Finally, the theoretical correctness and functional effectiveness of the proposed SI-SFCL-HDCCLC are validated in PSCAD/EMTDC-based environment and in lab-scaled experiment. Both the simulation and experimental results indicate that the proposed SI-SFCL-HDCCLC combined with HDCCB can effectively suppress fault current, shorten the isolation time of the fault line, reduce the energy absorption of the MOV and realize the rapid recovery of SI-SFCL.
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Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.