Sag on-line monitoring system of transmission line

A technology for transmission lines and monitoring systems, applied in the field of electric power, can solve the problems of difficulty in balancing resistance strain gauge bridges, difficult and accurate measurement of wire sag, etc.

Active Publication Date: 2010-01-06
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0005] The present invention aims to provide an on-line monitoring system for sag of transmission lines, which can solve the problem that the weighing

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  • Sag on-line monitoring system of transmission line
  • Sag on-line monitoring system of transmission line
  • Sag on-line monitoring system of transmission line

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Embodiment Construction

[0015] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0016] figure 1 Shows a block diagram of a transmission line sag online monitoring system according to an embodiment of the present invention, including: a fiber grating sensing module 10, a transmission module 20 and a computing module 30, wherein

[0017] The fiber grating sensing module 10 is used to measure the conductor strain parameter and temperature parameter of the transmission line, and digitize the analog signal to the conductor strain parameter and temperature parameter;

[0018] The transmission module 20 is used to transmit the digitized wire strain parameter and temperature parameter obtained by the fiber grating sensing module 10 to the calculation module;

[0019] The calculation module 30 is used to calculate the conductor sag of the transmission line according to the digitized conductor strain parameter and temper...

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Abstract

The invention provides a sag on-line monitoring system of a transmission line, which comprises a fiber grating sensing module, a transmission module and a computation module, wherein the fiber grating sensing module is used for measuring a wire strain parameter and a temperature parameter of the transmission line and performs analog signal digitalization to the wire strain parameter and the temperature parameter; the transmission module is used for transmitting the digitized wire strain parameter and the digitized temperature parameter which are obtained through the fiber grating sensing module to the computation module; and the computation module is used for obtaining the wire sag of the transmission line by computing according to the digitized wire strain parameter and the digitized temperature parameter. The invention overcomes the problem that the accurate measurement to the wire sag is hard to sustain since the bridge balance of a resistance strain gauge is not easy because the weighing system for sag measurement in the prior art adopts the resistance strain gauge to measure the wire tension.

Description

technical field [0001] The invention relates to the field of electric power, in particular to an online monitoring system for sag of a power transmission line. Background technique [0002] Conductor sag is an important indicator of transmission line design and operation, and is related to the operation safety of transmission lines. Excessive sag not only limits the transmission capacity of the line, but also easily causes grounding short-circuit accidents. Therefore, real-time measurement and early warning of transmission line sag is of great significance. [0003] The prior art provides an online monitoring method for sag, in which the tension of the suspension point of the wire is measured by a resistance strain gauge weighing system, and then the sag of the wire is obtained. [0004] In the process of realizing the present invention, the inventor found that the weighing system for measuring sag in the prior art uses the wire tension measured by the resistance strain gau...

Claims

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Application Information

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IPC IPC(8): G01B11/02G01L5/04G01B11/16
Inventor 李成榕马国明程养春全江涛
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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