Computer simulation platform system for galloping of overhead transmission conductors
An overhead transmission wire, computer simulation technology, applied in the direction of calculation, electrical digital data processing, mechanical vibration damping device, etc., can solve problems such as no direct solution method
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[0042] The invention includes 3 subsystems, namely
[0043] 1. Dynamic modeling subsystem: used to input the data parameters required for simulating wire galloping and establish the mechanical model of the system;
[0044] The dynamic modeling subsystem includes: working condition parameter input module, common parameter standard database module of transmission line system, finite element model module of transmission line system; each module is used for:
[0045] (1) The working condition parameter input module includes tower parameters, the tower parameters include geometric structure size, space altitude, material, and insulator form; wire parameters, the wire parameters include model, number of splits, split layout, and interphase spacer parameters; The icing parameters include the input of the structure type of the icing, the nature of the icing, and the size of the icing, and all the input variables are parameterized to adapt the system to different working conditions and differ...
specific Embodiment
[0074] The 30#--31# gears of a 330V line in the second split have been observed to show galloping phenomenon many times in actual operation. The stall is located in a highland position on a canyon hillside. The two poles of the line are located on hillsides with different altitudes on both sides. The height difference of the suspension points of the wires on both sides is about 39 meters. The actual observation that the icing of this span is "D" Type structure, the span is 200m, the altitude difference between the two tower insulators is 40m, the wire type is LGJ300 / 40, and the average running tension is 10000N.
[0075] Calculation results:
[0076] The average wind speed measured at this place is 15m / s. Considering the influence of topography and geomorphology, simulation software is used to calculate the spatial position of the wire midpoint. The wind speed is about 21m / s, and the angle between the wind direction and the horizontal plane is about 15 °. At the same time at d...
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