Abstract:The traditional saturated core type fault current limiter has a high reverse over-voltage during the disconnection process, while the energy dissipation type fault current limiter bears the fault current for a long time with large heat generation and high cost. Therefore, this paper proposes a new type of fast energy storage type DC current limiter topology, which has the advantages of small over- voltage, fast response and secondary energy utilization. Firstly, the topological structure and working principle of the new fast energy storage type current limiter were analyzed, that is, the auxiliary branch is introduced through magnetic coupling, thereby achieving the purpose of fast absorbing fault energy. Secondly, the circuit model of the new current limiter is established, and the design method of the main electrical parameters is given. Then, the key electrical parameters are optimized by combining the magnetic circuit finite element with the circuit simulation. Finally, the whole process condition simulation is carried out, and the transient voltage and current waveforms of the new current limiter are obtained. The feasibility and effectiveness of the proposed current limiter are verified by comparing the analytical results and the simulation results of different types of DC current limiters.
陈鹤冲, 袁佳歆, 许顺凯, 陈凡, 张哲维. 一种快速储能式直流限流器拓扑的电气参数分析[J]. 电工技术学报, 2021, 36(14): 3043-3054.
Chen Hechong, Yuan Jiaxin, Xu Shunkai, Chen Fan, Zhang Zhewei. Electrical Parameter Analysis of a Fast Energy Storage DC Current Limiter Topology. Transactions of China Electrotechnical Society, 2021, 36(14): 3043-3054.
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