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Fast de-icing method for distribution network lines

An ice melting method and distribution network technology, applied in the installation of overhead lines/cable equipment, electrical components, cables, etc. Ice melting and other problems, to achieve the effect of strong ice melting mobility, improving the ability to resist large-scale rain, snow and freezing disasters, and reducing workload

Inactive Publication Date: 2018-02-02
STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are not many studies on the distribution network ice melting system. The distribution network ice melting devices developed by some scientific research institutes are mainly aimed at melting short lines and ultra-short lines. Partially melt the ice
Moreover, there are many mixed line types in the distribution network, and generally only small cross-section conductors can be deiced, which is difficult
When a large-scale ice disaster occurs, the current configuration of ice melting devices is not enough to support the ice melting of all lines in the distribution network system in this area

Method used

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  • Fast de-icing method for distribution network lines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The main line of a substation is a mixed line type of LGJ-95 and LGJ-70, with a length of 15km, of which the length of the LGJ-95 conductor is 9km, and the length of the LGJ-70 conductor is 6km. There is a section of 5km of the LGJ-70 conductor that is seriously iced and is about to reach Icing warning value. according to figure 1 Flow chart, fixed ice melting method can be adopted.

Embodiment 2

[0023] An LGJ-50 branch line in a certain area has 3km of serious ice coverage, which is about to reach the ice-covered warning value. There is a section of the main line where the branch line is located is the LGJ-35 line. The local traffic is suitable for the mobile ice-melting vehicle system to enter. According to figure 1 Flowchart, the vehicle-mounted ice-melting method can be adopted.

Embodiment 3

[0025] A branch line of LGJ-70 in a certain area has 0.5km of serious ice covering, and the ice-covered section is located in a remote mountainous area, vehicles cannot enter, and the main line where the branch line is located has a mixed line of LGJ-70 and LGJ-50, and the thickness of the ice coating is about to reach the Ice alert value, according to figure 1 Flow chart, portable ice melting method can be adopted.

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Abstract

The invention relates to a fast de-icing method for distribution network lines. The fast de-icing method performs de-icing by adopting three de-icing units such as fixed large-capacity alternating-current de-icing equipment, vehicle-mounted generator set de-icing equipment and portable generator set de-icing equipment in allusion to different line lengths and line models, thereby being strong in feasibility and high in de-icing efficiency, can perform de-icing on hybrid lines in a distribution network and effectively improves the ability of the distribution network for resisting freezing rainand snow disasters.

Description

technical field [0001] The invention relates to a method for quickly melting ice of distribution network lines, which belongs to the technical field of electric power distribution. Background technique [0002] Since 2008, the large-scale rain, snow and freezing disasters in the south have caused heavy damage to the power systems of Hunan, Guizhou, Jiangxi, Zhejiang and other provinces. The distribution network lines are the most terminal of electricity sales, and they are widely distributed, mostly in micro-topographic and micro-meteorological areas. The frequent accidents of tower collapse and disconnection have directly affected the reliable power supply of users. The key to ensuring the reliability of power supply to users during ice disasters is to study the method of rapid ice melting of distribution network lines. At present, there are not many studies on the distribution network ice melting system. The distribution network ice melting devices developed by some sci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G1/02H02G7/16
CPCH02G1/02H02G7/16
Inventor 安义朱远王华云谭艳军朱思国张宇万军彪
Owner STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST
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