Movable aerial earth wire direct current ice melting system

Abstract

The invention introduces a movable aerial earth wire direct current ice melting system, which is formed by connecting a movable power supply car (1), a wiring box (3) and an aerial earth wire (4) in series through a cable (2). The output end of the movable power supply car (1) is connected with the input end of the wiring box (3), and the output end of the wiring box (3) is connected with the input end of the aerial earth wire (4). The system has the advantages of 1) being capable of adjusting matching impedance of the earth wire to melt ice; 2) being capable of adjusting current and reducing earth wire damage; 3) being capable of melting ice through multiple segments at multiple points; 4) being capable of moving equipment to the scene at any time; (5) reducing labor intensity of construction implementation; 6) resolving complex problems of power supply obtaining, aerial earth wire segmentation, multi-point grounding and the like; 7) improving ice removing environment and reducing risks; 8) being capable of removing ice in electrifying mode and avoiding trouble of power failure; and 9) having no effect on other construction and operation based on the earth wire.

Description

technical field [0001] The invention belongs to the technical field of electrical engineering, and relates to a mobile overhead ground line DC deicing system. Power grid ground wire rupture accident caused by severe icing. Background technique [0002] For a long time, freezing disasters have seriously threatened the security of the national power grid system. As far as ground wires are covered with ice, accidents occur frequently. For example, in the ice disaster that occurred in southern China in 2008, 2,067 overhead ground lines of 35-500kV transmission lines were broken. The breakage of the overhead ground wire of the transmission line caused the tripping of the line, the paralysis of some lines, and the interruption of many communication optical cables in the power grid. Inconvenience in life came. Previously, the State Grid had used many different methods to deal with the ice melting of overhead ground wires of transmission lines, such as high current ice melting, e...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a mobile overhead ground line DC deicing system, which can flexibly, multi-segment, multi-point Ice melting system that effectively melts ice for long-distance overhead ground wires or short-distance overhead ground wires

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