Method of constructing a distribution line using an extra-high voltage neutral line

摘要

The present invention relates to a distribution line, and more particularly, to a method of constructing a distribution line using an extra-high voltage neutral line combined with an overhead earth wire having a separate installation structure of the extra-high voltage neutral line and a low-voltage neutral line for improving electric power quality, in which a distribution line simultaneously perform functions of an overhead earth wire for shielding lightning, an extra-high voltage neutral line for returning unbalanced currents and fault currents and an optical communication line for establishing a communication network, such that a number of disconnections of power lines is reduced by reducing surge voltage thereby achieving excellent lightning shielding effects such as improved power quality, etc., construction costs are reduced, load is reduced, construction quality is improved, and aesthetic features of the urban area is improved by simplifying the distribution equipment.

主权项

1. A method of constructing a distribution line using an extra-high voltage neutral line combined with an overhead earth wire having a separate installation structure of the extra-high voltage neutral line and a low-voltage neutral line, in which a distribution line includes a power line provided at an upper part of an electric pole through a crossarm having an insulator, an overhead earth wire provided at an upper end of the electric pole, a transformer provided below the power line and positioned at a low-voltage jointed area, a low-voltage neutral line combined with an extra-high voltage neutral line provided below the transformer in parallel with the power line, and a low-voltage line provided at a position corresponding to the low-voltage jointed area, the method comprising:
separating the low-voltage neutral line and the extra-high voltage neutral line, configuring the overhead earth wire and the extra-high voltage neutral line into an integrated overhead earth wire and extra-high voltage neutral line and installing the integrated overhead earth wire and extra-high voltage neutral line on a top end of the electric pole by using a multi-cap; connecting the transformer and the integrated overhead earth wire and extra-high voltage neutral line by installing the low-voltage neutral line and the low-voltage line so that the low-voltage neutral line and the low-voltage line are connected to a low-voltage load part of the electric pole, in which the transformer is installed, below the transformer in the low-voltage jointed area such that a low-voltage load current is prevented from flowing through the integrated overhead earth wire and extra-high voltage neutral line; and installing a ground at the electric pole, in which the transformer of the low-voltage jointed area connected to the integrated overhead earth wire and extra-high voltage neutral line is installed, and at the electric pole in which an arrester or a switch is installed and ground-connecting the integrated overhead earth wire and extra-high voltage neutral line to the remaining electric pole so that the ground is installed to every electric pole.