Movable aerial earth wire direct current ice melting system

An overhead ground wire, DC ice melting technology, applied in the direction of overhead installation, electrical components, cable installation, etc., can solve the problems of backward deicing equipment and inability to achieve effective deicing, improve the deicing environment and reduce labor Intensity, risk reduction effect

Inactive Publication Date: 2012-07-04
STATE GRID HUNAN ELECTRIC POWER CO LTD ELECTRIC POWER SCI RES INST +3
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  • Abstract
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  • Claims
  • Application Information

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

Method used

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  • Movable aerial earth wire direct current ice melting system
  • Movable aerial earth wire direct current ice melting system

Examples

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Embodiment Construction

[0021] see figure 1 Shown is a specific embodiment of the mobile overhead ground line DC deicing system of the present invention, the mobile power vehicle 1 of this embodiment adopts the HDX5230TDY engineering emergency power supply vehicle produced by Haidexin Automobile Co., Ltd., Longyan City, Fujian Province, China, and its The calibrated rated power is 288kW, the standby power is 320KW, the output current is 200A, and the power factor is 0.8. Area 25mm 2 ; The junction box 3 is made of a stainless steel waterproof box produced by Ruiqun Machinery Manufacturing Co., Ltd. Changsha City, Hunan Province, China, with a flow capacity of 200A and a voltage of 10KV between the terminals and the ground; Overhead ground wire with high voltage and high current, this new type of overhead ground wire can pass through 200A, withstand high temperature above 200°C, withstand high voltage above 10kV, and have a thin insulation layer. Above-mentioned mobile power vehicle 1, junction box ...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G7/16
Inventor 陆佳政李波方针张红先谭艳军
Owner STATE GRID HUNAN ELECTRIC POWER CO LTD ELECTRIC POWER SCI RES INST
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