JP2000314702A - Apparatus and method for detecting salt contamination insulator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remotely detect a salt-contaminated insulator, etc., for a high- voltage transmission line without touching the insulator. SOLUTION: This device is composed of a laser beam source 2 for applying a laser beam 3 to an insulator 4 to be detected, and a Na-D line detection means 1 for detecting the Na-D line generated by salt on the surface of the insulator 4 to be detected becoming a plasma state when a spark is generated on the surface by the application of laser beam 3. The remote detection of a salt-contaminated state of the insulator 4 in a high-voltage transmission system allows only the salt-contaminated insulator 4 to be cleaned, so that the cleaning operation can be done efficiently when the salt damage is caused.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus and a method for detecting a salt-contaminated state of an insulator supporting a high-voltage power transmission line, and more particularly to a method of remotely detecting a salt-contaminated insulator without contacting the insulator. It is configured to be able to.

[0002]

2. Description of the Related Art If the surface of an insulator supporting a high-voltage transmission line is contaminated by salt of sea breeze, electric leakage occurs and power transmission becomes impossible. Therefore, the insulator contaminated with salt must be cleaned.

For this purpose, it is necessary to detect whether or not the insulator is contaminated. In the conventional detection method, a pilot insulator is hung separately from the power transmission system, and the pilot insulator is hung after a strong wind blows. The insulator is taken down, washed with water, and the salty content of the washed water is measured to find out the state of contamination.

[0004]

However, it is extremely inefficient to pull down the pilot insulators suspended from the entire tower, wash them, and detect the salt content, and it is extremely inefficient work, and the pilot insulators are not suspended. There was no means to detect site contamination. Therefore, the appearance of a device capable of remotely detecting insulators and the like contaminated with salt has been desired.

[0005]

According to the present invention, a salt-contaminated insulator detecting device includes a laser light source 2 for irradiating a laser beam 3 to the surface of a detected insulator 4, and a spark on the surface by irradiating the laser beam. At this time, there is provided a Na-D line detecting means 1 for detecting a Na-D line generated when the salt on the surface of the insulator 4 to be detected becomes plasma-like.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a salt-contaminated insulator detecting apparatus according to the present invention comprises a laser light source 2 for generating a relatively large pulsed laser output and irradiating the surface of a detected insulator 4 with a laser light source 2. A spark is generated on the surface of the detection insulator 4 and the insulator 4
Spectral line (Na-D line) peculiar to sodium generated due to the plasma state of the salt attached to the surface of NaCl
And a Na-D line detection device 1 for detecting the

[0007] Laser beam 3 output from laser light source 2
Is irradiated to the detected insulator 4 through the through hole 12 of the concave mirror 11. The Na-D ray detecting device 1 focuses the light beam incident from the direction of the insulator 4 by the concave mirror 11 and, among the incident light beams,
And a photoelectric conversion element 14 for converting the Na-D line transmitted through the filter 13 into an electric signal.
And an amplifier 15 for amplifying the output of the photoelectric conversion element 14,
And an indicator 16 for indicating the amplified signal.

A laser beam 3 emitted from a laser light source 2
Is an electromagnetic wave, so that when the surface of the insulator 4 is focused and irradiated, the laser beam 3 forms an electric field and sparks. If salt exists on the surface of the insulator 4 at the time of this spark, the salt becomes a plasma state and Na-D specific to sodium
Since a line is generated, a Na-D line is selected by the filter 13, detected by the photoelectric conversion element 14, and indicated by the indicator 16, whereby the presence or absence of salt on the insulator surface can be known.

[0009]

As is clear from the description based on the above embodiment, according to the present invention, the state of the insulator contaminated by the salt in the high-voltage power transmission system can be remotely detected, so that only the insulator contaminated by the salt can be detected. Since cleaning is sufficient, the cleaning operation when salt damage occurs can be performed efficiently.

[Brief description of the drawings]

FIG. 1 is a principle diagram showing an embodiment of a salt-contaminated insulator detection device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Na-D ray detection apparatus 2 Laser light source 3 Laser beam 4 Insulator 11 Concave mirror 12 Through-hole 13 Filter 14 Photoelectric conversion element 15 Amplifier 16 Indicator

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2G043 AA03 BA07 CA05 EA10 FA01 GA02 GA04 GB01 GB21 HA03 JA03 KA08 KA09 LA01

Claims (2)

[Claims] 1. A laser light source for irradiating a laser beam to the surface of a detected insulator, and a salt on the surface of the detected insulator becomes plasma-like when a spark is generated on the surface by irradiating the laser beam. Na for detecting the generated Na-D line
A salt-contaminated insulator detection device, comprising: -D-line detection means. 2. A spark is generated on the surface of the insulator to be detected by irradiating a laser beam to the surface of the insulator to be detected. At this time, the salt is generated due to the presence of salt on the surface of the insulator to be detected and the salt being turned into plasma. A method for detecting a salt-contaminated insulator by detecting a Na-D line.