On-line monitoring system for sag of overhead power transmission line

An overhead transmission line and monitoring system technology, applied in the field of electric power transmission, can solve the problems of measurement being limited by terrain, large error, cumbersome operation, etc., to ensure normal operation and service life, avoid disconnection or discharge to the ground, and ensure safety Effect

Pending Publication Date: 2019-10-08
李立学
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

These methods have large errors, the measurement is limited by the terrain, and the operation is cumbersome, the calculation is compl

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  • On-line monitoring system for sag of overhead power transmission line
  • On-line monitoring system for sag of overhead power transmission line
  • On-line monitoring system for sag of overhead power transmission line

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Embodiment Construction

[0028] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

[0029] In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do it without departing from the meaning of the present invention. By analogy, the present invention is therefore not limited to the specific examples disclosed below.

[0030] Such as Figure 1 to Figure 4 As...

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Abstract

The invention discloses an on-line monitoring system for sag of an overhead power transmission line. The on-line monitoring system comprises dip angle measurement sphere units, wherein the dip angle measurement sphere units are suspended at two ends of the power transmission line. Due to an error in measurement of a dip angle of a suspension point caused by a mechanical structure factor and a sensor, a ground distance measurement sphere unit is further arranged at the lowest position of the sag of the power transmission line. A calculation result of the sag can be corrected by combining directmeasurement of the sag on ground, the error in the measurement of the dip angle of the suspension point caused by the mechanical structure factor and the sensor can be effectively corrected, and thesag measurement accuracy is greatly improved; and moreover, by direct measurement of the sag on the ground, actual height of a wire on the ground can be obtained, and more effective information support can be provided for circuit maintenance when an abrupt event such as illegal building, tree growth and engineering machine occurs below a wire.

Description

technical field [0001] The invention relates to the technical field of electric power transmission, in particular to an on-line monitoring system for sag of an overhead power transmission line. Background technique [0002] The overhead transmission line is an important part of the power system, and ensuring the transmission capacity and safe operation of the line is the key issue in the maintenance of the transmission line. As of 2018, the length of 110kV and above transmission lines in my country has exceeded 1 million kilometers, of which the length of 330kV and above transmission lines has reached 120,500 kilometers. Moreover, with the rapid development of the national economy, the demand for power capacity in various industries and fields in our country is increasing. While striving to increase the length of transmission lines, ensuring and increasing the transmission capacity of existing overhead transmission lines, improving the security of power grid power supply, a...

Claims

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Application Information

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IPC IPC(8): G01C5/00G01S13/08G01K1/14
CPCG01C5/00G01S13/08G01K1/14
Inventor 李立学徐凯
Owner 李立学
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