High voltage transmission line press-bending deicing method and device

A technology of high-voltage transmission lines and running devices, which is applied in the installation of cables, electrical components, overhead installations, etc. It can solve the problems of wire fatigue damage, endangering lines, and unstable deicing effects, etc., to achieve energy saving, low energy consumption, Stable deicing effect

Active Publication Date: 2016-07-27
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For vibratory deicing, the conductor is in a vibrating state, which is prone to fatigue damage and endangers the circuit; for ice blade rolling or milling type deicing, the ice blade is used to break the ice first and then the rolling wheel is used to crush the ice. In order to achieve the ice breaking function of the ice blade, It needs to consume a lot of energy to drive the deicing device, and the deicing effect is unstable

Method used

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  • High voltage transmission line press-bending deicing method and device
  • High voltage transmission line press-bending deicing method and device
  • High voltage transmission line press-bending deicing method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Such as Figure 1~7 1. A high-voltage transmission line bending deicing method in 9, comprising the following steps:

[0042] 1. A running device hanging on the high-voltage transmission line 5 is provided at both ends of the frame 1, and the whole deicing device can walk along the high-voltage transmission line 5 through the running device;

[0043] 2. A liftable ice-breaking wheel 45 is provided in the middle of the frame 1, and the ice-breaking wheel 45 is located below the high-voltage transmission line 5;

[0044] 3. Set the bending height 7 according to the wire type of the high-voltage transmission line 5 and the thickness of the ice layer 6;

[0045] 4. The icebreaker 45 is raised by the control device 3, and the high-voltage transmission line 5 is bent upward to the bending height 7 in a static manner; during the bending process, the ice-coated layer 6 breaks and falls off from the surface of the high-voltage transmission line . As the entire rack assembly t...

Embodiment 2

[0051] On the basis of Example 1, such as Figure 1~8 Among them, a device for the above-mentioned high-voltage transmission line bending and deicing method, the two ends of the frame 1 are respectively provided with a first traveling device 2 and a second traveling device 2', and the first traveling device 2 and the second traveling device 2' walking wheels 21 are hung on the high-voltage transmission line 5;

[0052] The road wheels 21 of the first traveling device 2 or / and the second traveling device 2' are connected with the traveling drive device 22; as figure 1Among them, the drive motor of the road wheel 21 is not shown in the figure, the drive motor is fixedly connected with the pinion of the travel drive device 22, the pinion is engaged with the bull gear, and the bull gear is fixedly connected with the road wheel 21 coaxially. The driving motor adopts a DC motor. In this example, a scheme in which the traveling wheels 21 of the first traveling device 2 and the seco...

Embodiment 3

[0064] A more complete deicing procedure is as follows:

[0065] 1. Obtain the wire type of the high-voltage transmission line 5 by consulting the data of the ice-coated line, and the thickness of the ice-coated layer 6 is obtained by the ice-covered monitoring device or manual measurement;

[0066] The bending height 7 is calculated by the finite element method according to the wire type and the thickness of the ice layer 6 when the wire ice layer 6 reaches the crushing bending stress;

[0067] 2. Check whether the structural connection of each component is normal, turn on the power switch of the control device 3, and carry out device debugging;

[0068] And through the keyboard of the control device 3, parameters such as the wire model, the thickness of the ice-coated layer, and the restraint length of the ice-coated wire are input to the system, and the bending height 7 is obtained through calculation;

[0069] 3. Lift the deicing device to the iron tower by means of a pul...

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Abstract

The invention provides a high voltage transmission line press-bending deicing method and a device, the method comprises the following steps: 1, a running gear hanging over a high voltage transmission line is arranged on two ends of a rack; 2, a liftable ice breaking wheel is arranged on the middle of the rack, and the wheel is arranged below the high voltage transmission line; 3, a press-bending height is set according to the conductor type and the icing layer thickness of the high voltage transmission line; 4, the ice breaking wheel is made to lift and press the high voltage transmission line to bend until the press-bending height in static way; according to the above steps, the icing layer of the high voltage transmission line is removed through the press-bending way. According to the invention, the crisp characteristic of icing layer is utilized, deicing is performed through the static force bending way, the structure is relatively simple, the energy consumption is low, the deicing effect is stable, and the damage of the high voltage transmission line will not happened in deicing process.

Description

technical field [0001] The invention relates to the field of deicing of high-voltage transmission lines, in particular to a method and device for bending and deicing of high-voltage transmission lines. Background technique [0002] The safe operation of overhead transmission lines in the power grid has always been an issue of international concern. With the frequent occurrence of extreme weather in recent years, ice disasters on overhead transmission lines have occurred frequently. When the ice thickness exceeds the line design ice thickness, Lines are prone to accidents such as disconnection and collapse. [0003] At present, there are two effective methods commonly used for deicing transmission lines: one is the thermal deicing method, which melts the ice by generating heat through the direct current of the conductor; the other is the mechanical deicing method. Electrothermal ice melting has a better ice melting effect, but during the ice melting period, the ice-covered l...

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 孟遂民卢银均祝一帆徐文洋秦坤杨鸽子
Owner CHINA THREE GORGES UNIV
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