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Author

Long-Cheng Dai

2 papers indexed here

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Open access Oct 2026

Investigation into Combined AC–DC Insulation Stress Evolution Mechanism and Combined Withstand Voltage Test Method for 40.5 kV Capacitor Bank Circuit Breaker Breaks

With the large-scale construction of renewable energy collection stations and distribution networks, the frequent switching of 40.5 kV reactive power compensation capacitor banks has become a routine operation. To accurately evaluate the insulation safety risk at the breaker break during the switching process of 40.5 k...

Guo-Liang Zhang, Yi Tian, Long-Cheng Dai et al. · 0 citations
Sep 2026

Enhancing the operational reliability of circuit breaker pre-insertion resistors: failure mechanisms, modification measures, and condition assessment

Pre-insertion resistors are critical for suppressing inrush currents and switching overvoltages in Extra-High-Voltage (EHV) and Ultra-High-Voltage (UHV) circuit breakers; however, they continue to exhibit a significant failure rate. This study investigates the operational reliability of pre-insertion resistors by chara...

Ce Zhang, Long-Cheng Dai, Jia-Ying Yu et al. · 0 citations

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