Method and device for predicting ice coating disaster development trend of electric transmission line
A development trend and transmission line technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as complex water droplet impact characteristics, complex icing conditions on wires, etc.
Inactive Publication Date: 2017-05-17
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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However, in reality, the icing conditions of conductors are very complicated, so the impact characteristics of water droplets also become very complicated.
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[0049] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0050] figure 1 A schematic flow diagram of a method for predicting the development trend of transmission line icing disasters provided by the embodiment of the present invention, as shown in figure 1 As shown, the method mainly includes the following steps.
[0051] Step S101: Perform grid division on the calculation area.
[0052] The acc...
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An embodiment of the invention discloses a method and a device for predicting ice coating disaster development trend of an electric transmission line. The method includes the steps: performing mesh division for a calculation area; performing air flow field calculation based on mesh division to obtain flow field speed distribution; calculating water droplet collision trajectories according to the flow field speed distribution; performing simulation for motion of lead surface water membranes according to the water droplet collision trajectories to obtain ice coating increase quantity; acquiring ice coating surface according to ice coating increase quantity, and constructing an ice coating structure. According to the method and the device, a numerical model of a super-cooling water droplet collision lead in the ice coating process of the lead is compiled based on calculation and research of ice coating theories of the lead, two random feedback water droplet positions are interpolated into mesh nodes by the model, local collision positions of super-cooling water droplets are acquired, and the ice coating process of the lead is simulated.
Description
technical field [0001] The invention relates to the technical field of prediction of icing disasters on power transmission lines, in particular to a method and device for predicting the development trend of icing disasters on power transmission lines. Background technique [0002] The icing of overhead transmission lines can cause hazards such as line overload and galloping wires, or cause line breaks, tower collapses, and power grid paralysis. It can be seen that the icing of overhead transmission lines seriously affects the reliability of the transmission network and poses a huge threat to the safe and stable operation of the power system. Since the icing of transmission lines is mainly affected by meteorological factors, it is of great significance to discuss the law of icing on transmission lines from the aspect of meteorological factors and to establish a prediction model of icing on transmission lines under the background of the general climate. [0003] The general i...
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IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 于虹王龙飞
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST