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Method for replacing 10 kV distribution line lead with load

A power distribution line and load-carrying technology, applied in the direction of overhead lines/cable equipment, etc., can solve problems such as heavy workload, long power outage time, and long power outage maintenance time, so as to maintain and improve the image of the government and the government. The effect of improving social image

Inactive Publication Date: 2012-05-30
STATE GRID HEILONGJIANG ELECTRIC POWER CO LTD HARBIN POWER SUPPLY CO +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0002] The 10kV overhead distribution line is exposed to nature for a long time to cause aging. Due to many factors such as construction quality problems, insufficient daily maintenance, excessive load, and external force damage, the contacts are prone to burnout, thereby damaging the main line of the distribution line. happens from time to time
If the wire is replaced due to a power outage, due to the heavy workload, the power outage maintenance time will be too long, which will seriously affect the power supply reliability index
It will cause large economic losses to the power supply enterprises, and the power outage will be too long at the same time, and the negative social impact on the enterprises will be immeasurable. multiply

Method used

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Embodiment Construction

[0012] (1) When the wire is damaged and needs to be replaced, it is generally necessary to replace the one-phase wire of the entire tension section. Therefore, the short-circuit points should be respectively selected on the lead wires of the two tension rods in the tension section, and their positions should be close to the side other than the faulty section. In this way, the sheath of the main line of the non-faulty section can not be damaged, and at the same time, it is convenient for paralleling and splitting. If any of the short-circuit points is limited by conditions, you can choose a straight rod that is closer to the fault point, change it to a tension rod and set it as a short-circuit point.

[0013] (2) After the short-circuit point is set, an insulating pay-off trolley is installed on each pole cross arm in the tension section, and an insulating pay-off device is installed on each pole body 3.0 meters from the ground.

[0014] (3) Release the short wiring and the ne...

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Abstract

The invention provides a method for replacing a 10 kV distribution line lead with load, belonging to the power system live-line work technology field. Bypass work technology is employed, a line releasing apparatus is installed in a failed strain section and is used for releasing a short wire and a new lead, and simultaneously, by utilizing the apparatus, replacing an old lead with the new lead is completed. Compared with a widely-known lead replacement method, cutting off the load is not needed in the method of the invention, and replacement of the lead can be completed without influencing normal power utilization of a user.

Description

technical field [0001] The invention belongs to the technical field of live work in electric power systems, in particular to a method for replacing conductors of 10kV overhead power distribution lines with load. Background technique [0002] The 10kV overhead distribution line is exposed to nature for a long time to cause aging. Due to many factors such as construction quality problems, insufficient daily maintenance, excessive load, and external force damage, the contacts are prone to burnout, thereby damaging the main line of the distribution line. Situations happen from time to time. If the wire is replaced due to a power outage, due to the heavy workload, the power outage maintenance time will be too long, which will seriously affect the power supply reliability index. It will cause large economic losses to power supply companies, and the power outage will be too long at the same time, and the negative impact on the society brought to enterprises is even more immeasurab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G1/02
Inventor 罗洪舟陈岳宋朝晖
Owner STATE GRID HEILONGJIANG ELECTRIC POWER CO LTD HARBIN POWER SUPPLY CO
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