High-voltage line deicing device based on electric cylinder knocking

Abstract

The invention relates to a high-voltage line deicing device based on electric cylinder knocking, and belongs to the technical field of high-voltage line deicing device structures. The deicing device comprises a box body erected on a high-voltage line; a walking driving mechanism used for driving the whole device to walk in the length direction of the high-voltage line, a cutting knife cylinder mechanism used for cutting ice covering the surface of the high-voltage line, a knocking mechanism used for knocking the ice covering the high-voltage line and a brush cleaning mechanism used for cleaning ice scraps on the surface of the high-voltage line are installed in the box body. The deicing device is ingenious in structural design, capable of effectively removing ice covering on the high-voltage line and high in snow removing efficiency and safety coefficient.

Description

technical field [0001] The invention relates to a high-voltage line deicing device based on electric cylinder knocking, and belongs to the technical field of high-voltage line deicing device structures. Background technique [0002] Transmission line deicing technology is divided into four categories: thermal melting method, mechanical deicing method, natural passive deicing method and other deicing methods. The above four deicing methods mainly have the following shortcomings: [0003] 1. The thermal deicing method is currently the most widely used anti-icing and deicing method. First, the "short-circuit deicing" scheme can realize remote deicing, but this technology is stretched when it is used for 500KV and above lines; the other is more used The current thermal ice melting method is a direct current ice melting technology. The disadvantage of this method is that the ice-coated line needs to be disconnected from the grid before melting the ice, and then the two wires are ...

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Problems solved by technology

[0003] 1. The thermal deicing method is currently the most widely used anti-icing and deicing method. First, the "short-circuit deicing" scheme can realize remote deicing, but this technology is stretched when it is used for 500KV and above lines; the other is more used The thermal ice melting method is a direct current ice melting technology. The disadvantage of this method is that the ice-covered line needs to be disconnected from the power grid before melting the ice, and then the two wires are connected to form a loop and then a DC power supply is applied. The power supply can only be restored after the ice is melted.

The thermal ice melting method consumes a lot of energy to melt ice, and it is difficult to determine the size of the ice melting current and the power-on time;

[0004] 2. The mechanical deicing method has the characteristics of low energy consumption and low price. Its energy consumption is usually more than 100 times smaller than that of thermal ice melting, so it has a good application prospect. At present, the only feasible mechanical deicing method for transmission lines is made by The ground staff pulls the traction rope and removes the ice on the wire through the moving pulley, but it is passive and inefficient, and it is still difficult to use it for multi-split wires; in addition, there are deicing methods based on shock waves, vibrations or torsion. However, these either have a great impact on the stability of the power system, or the daily maintenance of the vibration device is difficult, and some cannot be used for deicing multiple split ice-coated conductors. At present, there is no widely used economical and efficient , especially for de-icing devices with multi-split lines;

[0006] 4. Other deicing methods include electronic freezing, corona discharge, etc. The advantage is that it can assist other deicing methods, but this method is still in the ideal or experimental stage, and the safety of use cannot be determined

[0007] In 1976, my country put forward five basic measures to prevent transmission line icing accidents, namely "avoidance, resistance, melting, modification and prevention". However, due to the uneven distribution of power resources and power markets, transmission line icing accidents occur from time to time. Including tripping, breakage of high-voltage lines, breakage of towers, etc., icing of transmission lines has become one of the main reasons that endanger the safe operation of lines, causing serious consequences such as power outages and traffic paralysis in some southern areas, and direct economic losses amounting to hundreds of billions of yuan

At present, there is no anti-icing and de-icing technology widely used in actual lines, which is one of the reasons for the frequent occurrence of icing accidents on transmission lines. In this case, it is necessary to study an economical, applicable, safe and effective anti-icing and de-icing technology already imminent

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