Research on the Melting Mechanism and Prevention Measures of PT High Voltage Fuses in 10∼35KV Distribution Networks

Le résumé fourni par la source

At present, China's 10-35kV distribution network often adopts a neutral ungrounded system. In the neutral ungrounded system of 10-35kV, the frequent melting of the high-voltage fuse of the potential transformer (PT) seriously affects the safe and reliable operation of the system. To solve this problem, the common reasons for frequent melting of PT high-voltage fuses were first studied and summarized; Secondly, theoretical analysis is conducted on the melting mechanism of PT high-voltage fuses; Then, the PSCAD simulation software was used to model and simulate the ferromagnetic resonance circuit of the PT high-voltage fuse in the 10 kV neutral point ungrounded system; Finally, summarize and propose preventive measures for frequent melting of PT high-voltage fuses, and verify the effectiveness of the proposed measures through simulation.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.