The invention discloses an on-site feeder automatic protection method and an application thereof. The designed modular protection method includes instantaneous trip protection,
overcurrent protection, post-acceleration protection,
voltage-loss
tripping protection,
voltage-feed closing protection, current type reclosing protection, zero-sequence current protection, one-side
voltage-loss automatic switching protection, latching current
tripping protection, transient voltage latching automatic closing protection, closed-
loop control protection and two-side under-voltage latching protection. A feeder terminal panel designed by adopting the on-site feeder automatic protection method integrates main line,
branch line and contact modular switches. The on-site feeder automatic protection method and the application thereof can achieve on-site fault isolation and non-fault region power supply
recovery without relying on a main
station of a power distribution network and communication, and improve
troubleshooting speed and reliability; and the operating personnel in a power supply company selects
modes of the switches according to position of a power distribution network line, and convenience is brought to the operating personnel for use.