Method for deicing aerial high voltage power line using laser

A high-voltage transmission line and laser technology, applied in the field of laser applications, can solve problems such as high energy and difficult implementation, achieve fast deicing speed, and solve the effect of power failure

Inactive Publication Date: 2008-12-17
INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
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Problems solved by technology

The above-mentioned patented technologies all use the thermal phase transition principle of ice to de-ice, which requires high energy and is difficult to implement.

Method used

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  • Method for deicing aerial high voltage power line using laser

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Embodiment Construction

[0019] figure 1 It is a schematic diagram of the implementation process of deicing overhead high-voltage transmission lines using laser light according to the present invention.

[0020] exist figure 1 In the above, when ice is formed on the overhead high-voltage transmission line in winter, the laser is set 50m away from the overhead high-voltage transmission line. The laser is required to be a pulsed laser, a 1064nm YAG laser can be selected, the laser pulse energy is 15J, the full width of the laser pulse width is 20ns, and the laser repetition frequency is 1Hz.

[0021] Start the laser, and when the laser emits light, focus the laser. Focusing has two purposes: one is to ensure that the diameter of the laser spot on the overhead high-voltage transmission line is 1cm, and the other is to ensure that the laser on the overhead high-voltage transmission line The average energy density of the spot is 15J·cm -2 .

[0022] After the focus adjustment of the laser is completed,...

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Abstract

The invention provides a method for deicing an overhead high-voltage transmission line by using laser. The deicing method includes the following steps: a laser is moved to the position 30m-100m far from an icing overhead high-voltage transmission line; the laser is focused for enabling the laser to form a laser luminous spot on the overhead high-voltage transmission line; the laser lases the icing overhead high-voltage transmission line; and the lasing direction moves along the icing overhead high-voltage transmission line for cleaning the rest ice covering the overhead high-voltage transmission line. The method with lower energy consumption can be used for long-distance deicing under the condition that the overhead high-voltage transmission line carries a load, thereby solving the problems that the power is required to be cut off in mechanical deicing, potential safety hazards exist in close-distance contact, etc.

Description

technical field [0001] The invention belongs to the technical field of laser application, and in particular relates to a method for deicing overhead high-voltage transmission lines by using laser. Background technique [0002] In winter in southern my country, because the temperature is around 0°C, the humidity of the snow is relatively high, and the snow and freezing rain with high humidity are easy to adhere to the overhead high-voltage transmission lines to form ice coatings. Too thick ice coatings will lead to accidents such as line breaks and tower collapses. , is very harmful. [0003] Icing of transmission lines is a relatively stubborn problem in the power industry. The deicing technologies currently used are mainly thermal deicing technology and mechanical deicing technology. Through a comprehensive comparison of the main thermal and mechanical deicing technologies, it is found that the energy consumption of thermal deicing is much higher than that of mechanical dei...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G7/16H01S3/11
Inventor 万敏杨锐路大举邹凯冷杰余鸿铭苏毅胡晓阳杜祥琬
Owner INST OF APPLIED ELECTRONICS CHINA ACAD OF ENG PHYSICS
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