Analysis of Influence of TV Insurance Slow Melting on Third Harmonic Stator Grounding Protection
This paper introduces the principle of the third harmonic ratio stator grounding protection of large hydropower units,and further analyzes the influence of TV primary fuse slow melting on the third harmonic voltage ratio stator grounding protection.Explain the reason why the slow melting of the TV primary insurance leads to the increase of the third harmonic voltage sampling at the machine end,and deepen the operation and maintenance personnel's understanding of the stator grounding protection of the third harmonic principle.Improving the professional and technical level of operation and maintenance personnel is conducive to improving the prevention measures for power production accidents.
relay protectionthird harmonicstator grounding protectionTV insurance slow meltingexcitation current
NETL
NSTL
万方数据
