Method and system for laser deicing for power transmission and transformation equipment

Abstract

The invention discloses a method and a system for laser deicing for power transmission and transformation equipment. The method comprises the steps of: adopting laser frequency conversion technology and a galvanometer scanning focusing principle; adopting a continuous or long-pulse solid laser as core deicing equipment; outputting infrared laser, partially converting the infrared laser into visible laser; coaxially outputting the infrared laser and the visible laser; focusing and irradiating on an ice-covering area of the power transmission and transformation equipment to deice through a collimating mirror, two scanning galvanometers and a focusing mirror; adopting control equipment to control the opportunity and the time of laser output of the laser and the vibration of the scanning galvanometers to ensure that the laser irradiated on the ice-covering area of the power transmission and transformation equipment performs two-dimensional mobile scanning; and observing the irradiation position of the visible laser through a tracking and aiming device to prevent the laser from damaging the power transmission and transformation equipment. The system has small volume and light weight, realizes the long-distance focusing of the laser, is favorable for removing large-area ice coating, realizes the tracking and observation of the laser deicing, prevents the laser from damaging the power transmission and transformation equipment, and can remove ice layers under the condition of no poweroff for a conducting wire iron tower; and the system can also be used for the deicing of the power transmission and transformation equipment such as insulators, overhead transmission lines, iron towers and the like.

Description

technical field [0001] The invention belongs to the technical field of laser applications, and relates to a method and system for laser deicing of power transmission and transformation equipment. Background technique [0002] Icing poses a great threat to the normal operation of power system transmission lines. At present, there are 20-30 kinds of deicing methods, which can be divided into four categories: mechanical deicing, thermal deicing, natural deicing, and mixed methods. [0003] High-power-density laser can remove the ice attached to the surface of high-voltage lines, insulators, and iron towers from a long distance. It is an external heating source and does not need to add any equipment inside the power grid. advantages and application potential. [0004] Among the currently published literature, there is an article about laser deicing: the article "CO 2 The laser deicing method proposed in "Research on Laser Thermal Melting Deicing" uses CO 2 Lasers mainly use ...

AI Technical Summary

Problems solved by technology

This method uses a short-pulse laser and relies on stress waves to shatter the ice layer. There is no method and device for tracking and targeting the emitted laser, and it is difficult to control the energy of the output laser at any time. It is easy to cause damage to the target, and it cannot be used for power transmission and transformation. The removal of icing on electrical equipment with a low damage threshold, such as insulators, threatens the safety of the power grid; this method moves the equipment to a distance of 30m-100m from the transmission line. In practical applications, this distance cannot fully meet the needs of the field environment and is difficult Therefore, the working distance of the laser needs to be increased; in this method, the laser spot size is 0.5cm-2cm, and the moving scanning is carried out along the direction of the transmission line, and the ice-covered area of ​​action is small

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