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An overhead conductor galloping test device and test method based on gear end displacement excitation

A technology of overhead wires and test devices, which is applied in the direction of measuring devices, vibration tests, and machine/structural component tests, and can solve problems such as the inability to conduct galloping mechanism research and the simulation of conductor galloping mechanisms.

Inactive Publication Date: 2015-08-26
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The testing machine uses mechanical transmission to simulate the galloping of the wires, and is used to study the ability of the wires to withstand galloping, but it does not involve the simulation of the galloping mechanism of the wires, and cannot be used to study the galloping mechanism

Method used

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  • An overhead conductor galloping test device and test method based on gear end displacement excitation
  • An overhead conductor galloping test device and test method based on gear end displacement excitation
  • An overhead conductor galloping test device and test method based on gear end displacement excitation

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Embodiment Construction

[0028] According to attached figure 1 It can be seen that the present invention specifically relates to an overhead wire galloping test device based on gear end displacement excitation, including a wire hanging device, a lateral drive device 1, an overhead wire 4 and an insulator string 5, the wire hanging device is fixed on the ground, and the two ends of the overhead wire 4 The insulator strings 5 ​​are respectively connected to the two wire-hanging devices, and the lateral drive device 1 is connected to the insulator strings 5. The wire-hanging device includes a horizontal arm 2, and the end of the cross arm 2 is provided with a hook connected to the insulator string 5. The middle part of the cross-arm 2 is fixed with the fixed seat 3 of the vertical cross-arm 2,

[0029] According to attached figure 2 It can be seen that three wire hanging devices are arranged side by side, and insulator strings 5 ​​are hung on the ends of the cross arms 2 of the wire hanging devices, an...

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Abstract

The invention discloses an overhead conductor galloping testing device and an overhead conductor galloping testing method on the basis of the gear-end displacement excitation and belongs to the technical field of galloping prevention of an overhead conductor. The testing device comprises conductor hanging devices, a transverse driving device, the overhead conductor and insulator strings. The conductor hanging devices are fixed on the ground. Both ends of the overhead conductor are respectively connected with two conductors hanging devices through the insulator strings. The transverse driving device is connected with the insulator strings. The testing method is implemented by steps of determining a measured point, loading, recording, analyzing and the like. According to the invention, the transverse driving device is matched with the overhead conductor to simulate the galloping condition of the overhead conductor in practice when the overhead conductor is subjected to gear-end displacement excitation along the direction of the overhead conductor; the testing device and the testing method are used for researching the galloping rules of the overhead conductor under the conditions of different spans, different excitation frequencies and different excitation amplitude; the defect of conventionally only carrying out galloping excitation on the conductor in the direction vertical to the overhead conductor is overcome; testers can more comprehensively know the galloping mechanism of the overhead conductor so as to give the galloping prevention measures.

Description

technical field [0001] The invention relates to an overhead wire gallop simulation test platform and a test method, belonging to the technical field of overhead wire gallop prevention, in particular to an overhead wire gallop test device and a test method based on gear end displacement excitation. Background technique [0002] Galloping of transmission line conductors is one of the most harmful and difficult problems in the field of power transmission technology. Transmission line galloping refers to a low-frequency (about 0.1-3Hz) and large-amplitude wire self-excited vibration generated by the wire under the action of wind, and the maximum amplitude can reach about 5-300 times the diameter of the wire. This movement can cause great dynamic stress, sometimes causing great damage to wires, fittings and towers. [0003] In order to avoid conductor galloping, it is necessary to conduct in-depth research on the conductor galloping mechanism, galloping conditions, and galloping...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M7/02
Inventor 王璋奇杨文刚韩志杰高林涛
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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