Research on Uninterruption Power Technical Requirements and Methods for PT-Type Automation Terminals

In order to solve the problem of difficult operation of automated terminals containing voltage transformers under non-power outage conditions, this article uses ATP-EMTP software to model the connection and disconnection transient model of the potential transformer (PT). Through the electromagnetic voltage mutual inductance By analyzing the excitation current of the transformer and electronic voltage transformer under different damping resistances and the single-phase voltage waveform under different grounding resistances, a reasonable and feasible non-power-off operation method with PT-type automation terminals was obtained.