Optical wave-based transmission line equivalent salt deposit density sensor and online measurement method thereof

A transmission line, equivalent salt density technology, applied in the direction of measuring devices, specific gravity measurement, instruments, etc., can solve the problem that the pollution degree of transmission lines cannot be monitored in real time, online and accurately, and achieve low operating environment requirements, good stability, Avoid the effects of mode hopping

Active Publication Date: 2014-04-23
西安金源电气股份有限公司
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Problems solved by technology

[0004] The purpose of the present invention is to provide a light-wave-based equivalent salt density sensor for power transmission lines and its online measureme

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  • Optical wave-based transmission line equivalent salt deposit density sensor and online measurement method thereof
  • Optical wave-based transmission line equivalent salt deposit density sensor and online measurement method thereof
  • Optical wave-based transmission line equivalent salt deposit density sensor and online measurement method thereof

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[0049] Example

[0050] To complete the on-line measurement of the equivalent salt density ESDD2 of the transmission line, first, under the salt density experiment conditions, measure the optical power attenuation Φ, relative humidity H, ambient temperature T, etc. of the transmission line equivalent salt density sensor based on light waves. Value the salt density value ESDD1, and measure the equivalent salt density value ESDD2 of the insulators taken from the field to obtain the relationship table between ESDD1 and ESDD2, as shown in Table 1. Then, using the optical power attenuation Φ, relative humidity H, ambient temperature T and its equivalent salt density value ESDD1 to train the neural network, a 2*4 dimensional matrix can be obtained, which can represent the neural network model. Finally, the matrix and the relation table between ESDD1 and ESDD2 are embedded in the microcontroller, and the sensor can measure the equivalent salt density value ESDD2 online.

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Abstract

The invention discloses an optical wave-based transmission line equivalent salt deposit density sensor which comprises a hollow shell, wherein a monitoring device board is arranged in the hollow shell and comprises a microcontroller; a laser transmitting module, a laser receiving module, a communication module, a data storage module, a power module and a temperature and humidity acquisition module are respectively connected to the microcontroller; the temperature and humidity acquisition module stretches out of the hollow shell. The invention also discloses a method for measuring salt density on line. The wide distribution theory and light energy loss mechanism in dielectric optical waveguide are utilized, the optical power attenuation, environment temperature, relative humidity and other data of the optical sensor are measured, the insulator equivalent salt deposit density with high accuracy is deduced by utilizing an established neural network model, pollution of a field insulator on the transmission line can be accurately monitored in real time or timely on line, the pollution on the transmission line caused by the insulator is globally diagnosed and monitored, and early warning information is provided.

Description

technical field [0001] The invention belongs to the technical field of on-line monitoring of power transmission lines, in particular to a light-wave-based equivalent salt density sensor for power transmission lines, and also relates to an online measurement method for the light-wave-based power transmission line equivalent salt density sensor. Background technique [0002] The insulators of transmission lines are required to operate reliably under atmospheric overvoltage, internal overvoltage and long-term operating voltage. However, the solid, liquid and gas particles deposited on the surface of the insulator act together with rain, dew, ice, snow and other harsh weather conditions, which greatly reduces the electrical strength of the insulator, which leads to the fact that the insulators of transmission lines and substations may not only be affected by overvoltage Flashovers occur under high voltage conditions, and pollution flashovers occur more frequently under long-term...

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Application Information

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IPC IPC(8): G01N9/00
Inventor 黄新波王玉鑫林淑凡赵伟强
Owner 西安金源电气股份有限公司
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