Operation method of 10kV common-pylon double-circuit line charged vertical pylon
A double circuit, 1.10kv technology on the same tower, applied in towers, building types, buildings, etc., can solve problems such as expanding the area affected by power outages, and achieve the effect of improving power supply reliability, reducing maintenance costs, and providing power grid reliability.
Active Publication Date: 2011-06-22
STATE GRID CORP OF CHINA +1
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AI Technical Summary
Problems solved by technology
However, it also brings new problems. Once a power outage is performed on one circuit, both circuits need to be out of power at the same time, thereby expanding the area affected by the power outage.
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0020] Operation method of erecting iron towers for 10kV double-circuit lines on the same tower with live electricity:
[0021] 1. Insulate and shield the wires near the operating point: the electrician in the insulated bucket arm vehicle wears insulating protective equipment, carries insulating tools into the working bucket, and raises the bucket arm to a suitable position. The electrician in the bucket uses a wire shielding cover (also known as a wire isolation tube) and an insulating blanket to double-insulate and isolate the six wires. During the work process, pay attention to using insulating ropes when passing insulation tools and materials up and down. When the shielding cover and the insulating blanket are used to isolate the wires, the range of movement should be small and the degree should be uniform to prevent phase-to-phase short circuit. When insulating and shielding, it should be carried out according to the principle of moving from near to far and from low to hi...
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The invention discloses a vertical iron tower live working method of a 10kV double-circuit line on the same tower comprising the following steps: 1 mounting a lower segment and a middle segment of the iron tower, and performing insulation screen for the wires near a work station; 2 hoisting an upper segment of the iron tower, and fixing the upper segment and the middle segment; 3 mounting a double cross arm and insulators at the upper layer of the iron tower, and getting the insulation screen of the double cross arm and the insulators done well, hoisting a middle phase wire of the double-circuit line on the insulators, fixing firmly and temporarily fixing the circuit near the inside of the iron tower on an upper cross arm by using an insulated rope, then mounting the double cross arm and insulators at a lower layer, and getting the insulation screen of the cross arm and the insulators well, then placing the lower layer wires in the circuit on the insulators and fixing, removing the insulation screen. The invention has advantages that the method of the invention mainly performs muti-screen for the wires near the work station, adopts a reasonable working step, realizes the charged set vertical tower of the multi-circuit line on the same tower by using simple configuration.
Description
technical field [0001] The invention relates to a live working method for a 10kV double-circuit line on the same tower, in particular to a live erecting iron tower working method for a 10kV double-circuit line on the same tower. Background technique [0002] Double-circuit distribution network lines erected on the same tower are more and more used in urban application research. Compared with single-circuit lines, it saves more line channels. The height of the tower can alleviate the contradiction between trees and lines, and meet the vertical safety requirements of urban flyovers and overpasses. distance. However, it also brings new problems. Once one line is out of power, the double-circuit line needs to be out of power at the same time, thereby expanding the area affected by the power outage. Therefore, there is an urgent need for a live erection tower operation method for 10kV double-circuit lines on the same tower, so as to realize live construction without blackout res...
Claims
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IPC IPC(8): E04H12/00
Inventor 李伟新潘小山林毓强蔡俊宇张世国庄德金吕伟庭方光辉
Owner STATE GRID CORP OF CHINA