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Power transmission line galloping electromagnetic motivation system and method

A transmission line and excitation system technology, which is applied in the field of electrical engineering, can solve problems such as flashover between phases, increase in the frequency and degree of damage of transmission line galloping, and threaten the safe and stable operation of the power grid, etc., to achieve the effect of suppressing line galloping

Pending Publication Date: 2018-12-14
WUHAN UNIV
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Problems solved by technology

[0002] The rapid development of the grid scale and the frequent occurrence of severe weather have resulted in a significant increase in the frequency and degree of damage of transmission lines galloping, ranging from phase-to-phase flashover, damage to ground wires, conductors, fittings and components, and severe cases of line tripping and power outages , disconnection of towers, etc., which seriously threaten the safe and stable operation of the power grid and cause major economic losses

Method used

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  • Power transmission line galloping electromagnetic motivation system and method
  • Power transmission line galloping electromagnetic motivation system and method
  • Power transmission line galloping electromagnetic motivation system and method

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Embodiment Construction

[0027] The power transmission line galloping excitation system of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] 1. First, the structure of the transmission line galloping excitation system is introduced.

[0029] figure 1 , figure 2 , image 3 The shown transmission line galloping excitation system is composed of a stress sensor 1, a voltage waveform generator 2, an electromagnetic attraction device 3, a traction mechanism 4, and the like. The stress sensor 1 is attached to the clamp 8 between the tension insulator string and the wire, and is used to measure the stress of the wire when it is in a galloping state, and transmits the measured stress data signal to the voltage waveform generator 2 through the signal line. The controller 9 in the voltage waveform generator 2 collects the wire stress change data measured by the sensor 1 to form the firing angle sequence of the thyr...

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Abstract

The invention discloses a power transmission line galloping electromagnetic motivation system and method. The system comprises a stress sensor for detecting a conductor stress state, a voltage waveform generator produces a voltage with a certain amplitude and time according to the stress sensor data, thereby supplying power for an electromagnetic gravitation device; the electromagnetic gravitationdevice produces the tension for the conductor through a traction mechanism, inputs mechanical energy for the power transmission line, thereby enabling the conductor to gallop. The line galloping amplitude and the controllable duration can be realized; the system can be used for researching a damage mechanism on an iron tower, an insulator, a conductor and a cable clamp by the power transmission line and researching the inhibition method of the line galloping.

Description

technical field [0001] The invention belongs to the technical field of electrical engineering, and in particular relates to a transmission line galloping electromagnetic excitation system and method, which adopts the mode of inputting mechanical energy to the transmission line to cause the conductor to gallop. Background technique [0002] The rapid development of the grid scale and the frequent occurrence of severe weather have resulted in a significant increase in the frequency and degree of damage of transmission lines galloping, ranging from phase-to-phase flashover, damage to ground wires, conductors, fittings and components, and severe cases of line tripping and power outages , disconnection of towers, etc., which seriously threaten the safe and stable operation of the power grid and cause major economic losses [0003] In order to study the damage mechanism of transmission line galloping on transmission line towers, insulators, conductors, clamps, etc., it is necessar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/00G01M7/08
CPCG01M7/00G01M7/08
Inventor 阮江军张力李冠南
Owner WUHAN UNIV
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