Method and device for monitoring dirtiness of insulator

A monitoring device and insulator technology, applied in measurement devices, material analysis by optical means, instruments, etc., can solve the problems of inability to directly measure the salt density of charged insulators, high cost of optical sensing components, and achieve low cost, accurate measurement, adaptable effect

Active Publication Date: 2013-06-12
ELECTRIC POWER SCI RES INST OF GUIZHOU POWER GRID CO LTD
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Problems solved by technology

[0005] The disadvantage of the method of measuring salt density with laser sensing technology is that the cost of optical sensing components is high. In addition, the device for measuring salt density with laser sensing technology is installed on the tower pole. The device and the charged insulator are not in the same electric field environment, so it cannot be directly measured. Salt density of live insulators

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  • Method and device for monitoring dirtiness of insulator

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Embodiment 1

[0018] Embodiment 1, its method is to arrange optical fiber on the insulator, connect signal output and signal receiving ratio measuring device on the optical fiber, and throw away the outer cladding of optical fiber, utilize the light intensity in the optical fiber that can influence the light intensity in the optical fiber to measure stickiness when utilizing dirt sticking to the optical fiber surface The degree of pollution of the insulation covering the insulator. A wireless transmitting device is connected to the signal receiving and measuring device, and when the light intensity detected by the signal receiving and measuring device is lower than a specified value, the wireless transmitting device sends a signal to alarm to realize online monitoring.

[0019] The preferred solution is to open a groove on the insulator, and the optical fiber is glued in the groove, and at the same time, one or several insulators with optical fiber are connected to the insulator string of th...

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Abstract

The invention discloses a method for monitoring dirtiness of an insulator. The method comprises the following steps of: arranging an optical fiber on the insulator, connecting the optical fiber with a signal output device and a signal reception measuring and comparing device, removing the external cladding layer from the optical fiber, and determining the insulating dirtiness adhered onto the insulator by a fact that the light intensity in the optical fiber is affected when dirt is adhered to the surface of the optical fiber. According to the method, the insulator is provided with the naked optical fiber of which the skin is peeled off, dirt is adhered to the naked optical fiber in the use of the insulator, and then the light intensity of the optical fiber is affected, so that the insulating dirtiness adhered onto the insulator can be determined by the change of the light intensity. Compared with the existing salt deposit monitoring method, the method has the advantages that the dirtiness condition on the surface of the charged insulator can be directly monitored by light intensity, and the insulating property and the creep distance of the insulator are not affected.

Description

technical field [0001] The invention relates to an insulator pollution monitoring method and a monitoring device thereof, belonging to the field of insulator salt density monitoring. Background technique [0002] The surface of ceramic insulators and glass insulators will continue to accumulate pollution during operation. As the degree of pollution increases, the conductance of the insulator surface will also increase. If it develops to a certain extent, it may cause pollution flashover, which is harmful to the safe operation of the power system. It is extremely harmful. Pollution flashover of power insulators is one of the problems that hinder the safe operation of power systems. The application of ceramic insulators and glass insulators has not fundamentally changed the importance of pollution flashover prevention in power systems. In order to prevent pollution flashover, measures such as coating, wiping, and climbing are now used to clean the surface pollution of insula...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/17
Inventor 罗洪黄欢曾华荣赵立进
Owner ELECTRIC POWER SCI RES INST OF GUIZHOU POWER GRID CO LTD
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