Method for deicing ground wire of high tension overhead transmission line
A technology of transmission lines and lightning protection lines, which is applied in the direction of circuit, overhead installation, cable installation, etc., and can solve problems such as high pressure on the tower
Inactive Publication Date: 2010-08-18
华旭东
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Problems solved by technology
[0002] There are two or one lightning protection wire above the tower and pole of the high-voltage transmission line. The lightning protection wire does not pass through the current, so the icing of the lightning protection wire is often more serious than that of the transmission line, and the pressure on the tower is also great. As far as I know, I haven't seen the technical introduction and mature technology application in this area
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[0007] 1) The implementation of the special lightning protection line, see accompanying drawing 2, E is the tension bearing steel core with a cross-sectional area of 27 square millimeters at -5 ° C, the DC resistance is 6.88Ω / KM, F is the aluminum conductor layer with a cross-sectional area of 10 square millimeters -5 The DC resistance at ℃ is 2.56Ω / KM, the one-way length is 3.5KM, the DC resistance at -5℃, the E resistance is 24.08Ω, the F resistance is 8.92Ω, and the total resistance is 33Ω. The ice-melting power is 3W per meter, the ice-melting power is 10.5KW, the maximum voltage is 600V and the current is 18.1A. The transformer is a conventional isolation transformer with a power of 12KW. The primary input voltage is 0-380V and the output is 0-600V. The power supply is provided by the power regulator, which can realize comprehensive management and control.
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Abstract
Two or one lightning conductor(s) are arranged above the tower and the pole of the high pressure transmission line, wherein the lightning conductor is not electrified, so the icing of the lightning conductor is more serious than the transmission line, thereby causing high pressure to the tower. Provided is a special lightning conductor of laminated insulation, wherein an isolating transformer is used to load the sleet melting power to the overhead lightning conductor, which causes the lightning conductor heat, thereby realizing the sleet melting of the lightning conductor.
Description
Technical field [0001] The invention provides a method for melting ice of a lightning protection line erected above a high-voltage transmission line, and belongs to the technical field of high-voltage transmission. technical background [0002] There are two or one lightning protection wire above the tower and pole of the high-voltage transmission line. The lightning protection wire does not pass through the current, so the icing of the lightning protection wire is often more serious than that of the transmission line, and the pressure on the tower is also great. As far as I know, I have not seen the technical introduction and mature technical application in this area. Contents of the invention [0003] A lightning protection wire is erected above the overhead high-voltage transmission line. The material of the lightning protection wire is a stranded wire. The lightning protection wire has a good electrical connection with the iron tower and the pole, and then it is connec...
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IPC IPC(8): H02G13/00H02G7/16H01B13/00
Inventor 华旭东
Owner 华旭东