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Wind and rain vibration simulation experiment device for transmission conductor

A technology for simulating experimental devices and transmission wires, which is applied in the field of vibration-induced simulation experimental devices, can solve problems such as the absence of and threaten the safe and stable operation of transmission lines, and achieve the effects of reducing water circulation loss and compact overall structure.

Inactive Publication Date: 2015-05-06
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

This large vibration phenomenon seriously threatens the safe and stable operation of the transmission line, and is a major hidden danger in the upcoming UHV transmission line project.
However, there is no relevant experimental equipment for wind and rain-induced vibration experiments on a transmission line in China.

Method used

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  • Wind and rain vibration simulation experiment device for transmission conductor
  • Wind and rain vibration simulation experiment device for transmission conductor
  • Wind and rain vibration simulation experiment device for transmission conductor

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Experimental program
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Embodiment Construction

[0016] Each structure of the present invention will be described in detail in conjunction with the accompanying drawings.

[0017] 1. Lead frame mechanism: It consists of lead frame support [6], spring [7], lead frame coarse adjustment screw [8], lead frame base [9], fine adjustment screw (M6-S) [21] and wires. The base of the lead frame is connected with the support of the lead frame, and is clamped by the coarse adjustment screw of the lead frame, which can be loosened when the height is roughly adjusted, and then tightened after adjustment. The wire is pulled to the middle of the rectangular support of the lead frame by its upper and lower two springs, which can be used for free vibration. The upper part of the high position spring is connected with the lead frame bracket through the micro adjustment screw, and the tension of the high position spring is adjusted by rotating the micro adjustment screw, so as to fine tune the height of the wire.

[0018] 2. Scale plate struc...

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Abstract

The invention discloses a wind and rain vibration simulation experiment device for a transmission conductor. The device is used for researching wind and rain vibration possibly induced by the wind and rain coupling function of the transmission conductor and comprises a test bench body structure, a rainfall simulation device, a wind speed simulation system, a conductor frame structure and a conductor position adjusting and testing device. A sprayer of the rainfall simulation device can horizontally move along with a pipeline support to adjust the distance between the sprayer and an air outlet. A device water source comes from a water tank and is supplied by a side water pump. Rainfall simulated by the sprayer passes a diversion trench and then is recovered to a water tank, so that water is recycled. A conductor frame is arranged on two sides of a middle experiment area, has two height adjustment stages and comprises a support, a rough adjustment screw and a fine adjustment screw, the rough adjustment screw and the fine adjustment screw are arranged at the joint of the support and the base, and the transmission conductor is hung in a rectangular frame of the conductor frame through a spring. In addition, a pressure sensor, a displacement sensor, a speed sensor and an acceleration sensor are arranged at two ends of the transmission conductor respectively and used for measuring aerodynamic coefficient, vibration displacement, displacement speed and acceleration.

Description

technical field [0001] The invention provides a vibration simulation experiment device, in particular to a wind and rain vibration simulation experiment device for power transmission wires. Background technique [0002] With the development of the electric power industry, the high-voltage and ultra-high voltage transmission networks are gradually becoming large-scale and intelligent, which has caused great changes in the transmission tower-line system, mainly presenting problems such as towering towers and thick conductor cross-sections. This makes the tower line system more flexible and vulnerable to external loads. UHV transmission wires frequently exhibit large vibrations in wind and rain coupled environments. A small number of scholars at home and abroad have conducted targeted research and found that the inducing mechanism may be the aerodynamic instability of the transmission line caused by wind and rain. This large-scale vibration phenomenon seriously threatens the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B23/18
CPCG09B23/188
Inventor 周超孟超刘衍平李力
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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