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Power transmission line galloping information reconstruction method based on compressed sensing

A compressed sensing and transmission line technology, applied in the identification of patterns in signals, instruments, measurement devices, etc., can solve problems such as increased investment and equipment maintenance costs, difficulty in obtaining intuitive data, and increased gravitational load on transmission lines.

Pending Publication Date: 2021-04-09
JIANGSU ELECTRIC POWER CO
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Problems solved by technology

[0003] Current transmission line galloping monitoring methods are mainly based on the following two types of methods: the first type is video monitoring method, which mainly uses some high-resolution cameras to take real-time pictures of transmission lines, but is easily affected by weather and light. The shooting effect at night is not good, and it is difficult to obtain intuitive data for subsequent research and analysis; the second type is to arrange a certain number of wireless sensors on the transmission line as monitoring nodes, such as acceleration sensors, inclination sensors, etc. This method has a simple structure , easy to operate, and wide applicability, but if the number of monitoring units is too large, it will not only increase the gravity load of the transmission line, but also greatly increase the investment in research and development and the maintenance cost of equipment, and the subsequent processing of huge data is also a thorny problem

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  • Power transmission line galloping information reconstruction method based on compressed sensing
  • Power transmission line galloping information reconstruction method based on compressed sensing
  • Power transmission line galloping information reconstruction method based on compressed sensing

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Embodiment 1

[0032] Simulation Example 1: When the transverse wind load acts on the transmission line, the wire will produce an up and down acceleration motion, thereby being affected by the aerodynamic moment and twisting, and galloping will occur when the torsional frequency reaches a certain condition. When the transmission line gallops and reaches stability, the vibration waveforms in the horizontal direction and the vertical direction are approximately simple harmonics, and the vibration frequencies in the two directions are consistent, but the amplitude in the horizontal direction is small, and the vibration in the vertical direction is the main one. Therefore, only Considering the vibration in the vertical direction, when the galloping is stable, the amplitude in the vertical direction and the maximum amplitude A, the span L, the galloping half-wave number n (n=1,2,3,), the galloping position x on the wire, the galloping The relationship between frequency f and time t can be expresse...

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Abstract

The invention discloses a power transmission line galloping information reconstruction method based on compressed sensing, which comprises the following steps: firstly, constructing a measurement matrix, arranging nodes of a power transmission line and sensor sampling data selected by the nodes in the construction process, and then carrying out sparse change on an original signal by selecting a discrete Fourier transform basis to obtain a reconstructed signal; and acquiring an observation value through a measurement matrix, and recovering the process of an original signal through an optimization problem. According to the method, the galloping information can be recovered through the information sensing nodes in limited lines, so that the interference of excessive arrangement of the sensing nodes on the galloping information is reduced.

Description

technical field [0001] The invention belongs to the technical field of on-line monitoring of transmission lines, and in particular relates to a method for reconstructing galloping information of transmission lines based on compressed sensing. Background technique [0002] Due to the influence of bad weather environment, power accidents occurred frequently in some areas. Among them, line galloping is a common problem that has affected the safety of transmission lines in my country for a long time. The monitoring of transmission line galloping can timely understand the swinging situation of transmission lines, which is convenient for early warning and emergency repair, so that the harm can be minimized. At the same time, the data of line galloping can also be obtained. Information for future research and prevention. [0003] Current transmission line galloping monitoring methods are mainly based on the following two types of methods: the first type is video monitoring method, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H17/00G06K9/00
CPCG01H17/00G06F2218/22G06F2218/08
Inventor 龚彧刘晓宏胥峥丁楠
Owner JIANGSU ELECTRIC POWER CO
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