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The converter station based on a half-bridge sub-module has poor tolerance to dc short-circuit faults, which puts forward higher requirements for the detection and breaking performance of dc circuit breakers (DCCBs). To this end, this paper proposes a Capacitance-Resistance hybrid fault current limiter (CRHCL) that can be integrated with DCCBs. The proposed CRHCL realizes the fast switching of the current limiting resistor through the thyristor and the pre-charged capacitor. The working principle and parameter configuration principle of CRHCL are described, and the theory and performance verification are carried out in the single-ended equivalent system simulation. The results show that compared with the traditional scheme of DCCB direct breaking, the proposal has a lower breaking current and breaking voltage, which effectively reduces the demand of DCCB for device number and breaking performance. © Published under licence by IOP Publishing Ltd.
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ISSN: 1742-6588
Year: 2024
Issue: 1
Volume: 2849
Language: English
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ESI Highly Cited Papers on the List: 0 Unfold All
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30 Days PV: 1
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