Abstract
Polluted flashover of insulators has always been a crucial hidden peril to the reliability of substation for supplying electricity. At present, the insulator of the substation is mainly cleaned manually in the case of power-cut, which greatly affects the reliability of power supply and operation safety. In this paper, an insulator dry-ice mechanical arm capable of electrified working is proposed. Under the regular operation of the power grid, the operator can remotely control the mechanical arm to clean the insulators of the substation with high-pressure gas mixed with dry-ice particles. This will not only ensure the regular operation of the power grid, but also greatly protects the safety of personnel. Considering the operation environment and high-voltage working conditions of the substation, the mechanism and control system of the dry-ice cleaning mechanical arm are designed, and the motion analysis, simulation, and strength analysis of the mechanical arm are carried out. Finally, the high-voltage-insulation test of the mechanical arm and the actual operation of the substation insulator cleaning working test are carried out, which proves that this mechanical arm can adapt to the operation environment of the substation, and the working is stable, safe, and reliable, which has an important application value to solve the problem in the cleaning of the substation insulator and other electrified equipment.
Highlights
In the long-term operation of substation insulator, dust floating in the air is easy to adhere to the insulator surface to form a dirty layer, which is more serious in heavily polluted areas
This paper proposes a kind of electrified mechanical arm system, which is mainly composed of mobile platform, dry-ice cleaning mechanical dry-ice cleaning mechanical arm system, which is mainly composed of mobile platform, dry-ice arm, dry-ice conveying system, and hand-held controller
In order to adapt electrified working of the substation, the insulation function material nylonto is the used for the body of theenvironment dry-ice cleaning mechanical arm, sobetter that its strength function material nylon is used for the body of the dry-ice cleaning mechanical arm, so that its is fairly worse than aluminum alloy and other metal materials
Summary
In the long-term operation of substation insulator, dust floating in the air is easy to adhere to the insulator surface to form a dirty layer, which is more serious in heavily polluted areas. Isflashover mainly responsible for the movement of the whole system in the substation, carrying the dry-ice cleaning mechanical arm to reach the insulator needed to be cleaned. 2. The mechanical arm ofcleaning dry-ice cleaning system drives theeconomical, nozzle to and nondestructive [35,36], which can effectively remove the contaminated particles on the surface move up, down, left, and right to clean the whole insulator at a fixed position, as shown in. Due to the good insulation performance, cleaning effect, and environmental protection characteristics of dry-ice cleaning, this paper adopts the method of dry-ice cleaning insulator, using high-pressure gas carrying dry-ice particles to impact the insulator surface. The dry-ice move up, down, left, and right to clean the whole insulator at a fixed position, as shown in L01 to conveying system mainly includes high-pressure gas generation system and dry-ice particle conveyor.
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