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Operation method for loosening wire above electrified circuit in cross bar

A technology of electric lines and electric wires, applied in the direction of overhead lines/cable equipment, etc., which can solve problems such as power outages for users, slowdown of construction progress, and project complexity

Inactive Publication Date: 2021-03-19
SHANGHAI MUNICIPAL ELECTRIC POWER CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This complicates the project and slows down the construction schedule
At the same time, when the load is transferred and there is no access condition for the generator car, it will inevitably cause power outages for users

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] In order to better understand the technical solution of the present invention, the following will be described in detail through specific examples:

[0018] A method for loosening and removing wires above the electric lines in the cross gear of the present invention comprises the following steps:

[0019] Step 1. The electrician adjusts the insulation bucket to the bottom of the "T" joint, and takes insulation and shielding measures for the wires;

[0020] Step 2. After obtaining the permission of the working guardian, the electrician cuts off the "T" joint of the side phases under the condition of ensuring that the end of the power supply is under no load, and insulates and shields the live wires of this phase;

[0021] Step 3, the electrician cuts off the other two "T" joints in the same way;

[0022] Step 4, for the three-phase "T" type connection breaking, according to the principle of first two sides and then the middle;

[0023] Step 5, the electrician restores ...

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PUM

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Abstract

The invention discloses an operation method for loosening a wire above an electrified circuit in a cross bar, which comprises the following steps: disconnecting an upper-layer wire and a lower-layer wire to cut off the power of the upper-layer wire, and performing auxiliary measures such as insulation isolation and the like on the lower-layer electrified circuit through an insulating sleeve and aninsulating blanket; installing the insulating tightener, using two overhead vehicles for conducting disconnection and loosening work on the upper-layer wire of the cross gear, and after the wires arecut off, wrapping the cut-off positions of the wires on the two sides in an insulating mode; keeping certain tension all the time when the wire is loosened through the insulating rope (the overhead vehicle is not stressed); and finally, completing the releasing work of the upper-layer wire of the electric circuit in the cross bar. According to the invention, uninterrupted power operation of wireloosening and withdrawing can be realized.

Description

technical field [0001] The invention relates to an operation method for loosening and removing wires above the electric lines in the cross stalls used in the field of electric power engineering. Background technique [0002] With the modernization of power supply, under the premise of ensuring the safety of construction operations, it is a major requirement for power engineering and power maintenance to greatly reduce the time and scope of power outages. With the further refinement of uninterrupted operations in engineering construction, the content and scope of uninterrupted operations have also been further expanded. [0003] The operation of loosening and removing the wires above the electric lines in the cross stalls requires a power outage on the lower wires of the cross stalls according to the existing operation method, which not only causes power outages for users but also greatly affects the reliability of power supply of the system. In planned engineering projects ...

Claims

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Application Information

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IPC IPC(8): H02G1/02
CPCH02G1/02
Inventor 詹麒麟周翔沈主浮张周伟王伟亮蒋伟王子豪施继栋邵峥达姚岚顾力孙翔谢娇艳邱玉婷王烨范峥彬尤智文
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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