APPARATUS FOR BREAKING CONNECTION OF 345 kV UNDERGROUND TRANSMISSION LINE

摘要

The present invention relates to an apparatus for blocking connection of a 345 kV underground transmission line, which comprises: an insulation partition plate for dividing a lead-in space, in which a conductor part of a lead-in line is located on the inside of an underground pipe, and a drawn space in which a conductor part of a drawn line is located; a casing installed on the outside of the underground pipe; a connection rod formed of a conductor, passing through a connection rod through-hole formed on the insulation partition plate, and installed to be lifted between the lead0in space and the drawn space; a lifting means for lifting the connection rod; a power device extinguishing means installed on both sides of an upper end of a cabinet; a first extinguishing means and a second extinguishing means for preventing an arc generation in the lead-in space, the drawn space, and the casing; a shielding means for shielding communication of the lead-in space and the drawn space by the connection rod through-hole formed on the insulation partition plate; and a control means for controlling the lifting means, the power device extinguishing means, the first extinguishing means, the second extinguishing means, and the shielding means. According to the present invention, it is possible to extinguish fire quickly by injecting a fire extinguishing gas when fire occurs in the cabinet and a power device. In addition, in a process of blocking the lead-in line and the drawn line, the lead-in line and the drawn line are located in spaces shielded from each other, and arc generation can be prevented by injecting a fire extinguishing gas into each space. Accordingly, it is possible to prevent diffusion and reoccurrence of fire.;COPYRIGHT KIPO 2018