Tower material vibration displacement real time monitoring method for power transmission iron tower

Abstract

The invention discloses a tower material vibration displacement real time monitoring method for a power transmission iron tower. The tower material vibration displacement real time monitoring method includes the steps: 1) acquiring an acceleration signal of the tower material of an iron tower; 2) utilizing Fourier transform to convert an acceleration time domain signal into a frequency domain signal, and divided an acceleration frequency spectrum by omega 2, wherein omega is an angular frequency; 3) selecting a Qualcomm high channel to perform filtering truncation on the obtained frequency domain signal in the step 2 and then convert the frequency domain signal into displacement frequency spectrum; and 4) performing Fourier inversion on the displacement frequency spectrum to convert the displacement frequency spectrum into a displacement time domain signal so as to obtain the real time displacement of the tower material of the iron tower. The tower material vibration displacement real time monitoring method for a power transmission iron tower can monitor the vibration displacement of the tower material of the tower in real time, thus being convenient for monitoring the magnitude of the displacement of the tower in real time for a power worker when a transmission conductor is galloping so as to determine the safety state of the tower, wherein once the tower has the trend of danger, remedial action can be taken timely.

Description

technical field [0001] The invention relates to the field of power transmission iron tower monitoring, in particular to a method for real-time monitoring of vibration displacement of power transmission iron tower materials. Background technique [0002] The galloping phenomenon of high-voltage transmission lines in northern China is the main problem that threatens the safe operation of the power grid, especially the main network lines of 500kV and above. It will also seriously threaten the security and reliability of the power grid. [0003] In recent years, with the development of power grid construction and the influence of disastrous meteorological conditions, the frequency and intensity of galloping accidents on overhead transmission lines in my country have increased significantly. In addition to causing electrical accidents, the galloping of ice-coated wires can also lead to serious accidents such as disconnection, damage to the iron tower, or even the collapse of the...

AI Technical Summary

Problems solved by technology

Existing transmission line galloping measurement technologies mostly focus on the measurement of conductor galloping trajectory; conductor galloping is characterized by low frequency and large amplitude, while tower material vibration displacement is characterized by low frequency and small displacement, so the measurement method is different from the measurement of conductor galloping trajectory. At present, there is no device for monitoring the galloping displacement of transmission tower materials.

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