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Power transmission and transformation equipment outer insulation equivalent ash deposit density measuring method and device

A technology for power transmission and transformation equipment and density measurement, which is used in electrical digital data processing, optical testing flaws/defects, special data processing applications, etc.

Active Publication Date: 2008-01-09
WUHAN NARI LIABILITY OF STATE GRID ELECTRIC POWER RES INST
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Problems solved by technology

However, due to the complicated procedures of this method and the impossibility of meeting the conditions on site, it is only used by scientific research institutes when research needs, and the operating units generally do not measure the ash density.

Method used

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  • Power transmission and transformation equipment outer insulation equivalent ash deposit density measuring method and device
  • Power transmission and transformation equipment outer insulation equivalent ash deposit density measuring method and device
  • Power transmission and transformation equipment outer insulation equivalent ash deposit density measuring method and device

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Embodiment Construction

[0019] Fig. 1 is a schematic block diagram of the measurement circuit of the present invention, Fig. 2 is a schematic diagram of on-site measurement of the present invention, and Fig. 3 is a schematic diagram of installation and measurement of the present invention on the upper and lower surfaces of an insulator. The present invention is based on the theoretical basis that the accumulated thickness of ash density affects the transmitted light intensity, and calculates the ash density of the dirty layer by comparing the change of the light intensity passing through the dirty layer. Specific steps are as follows:

[0020] 1) Set up multiple detection points on the upper and lower surfaces of the insulator, each detection point pre-embeds two photodetectors with the same parameters and the same performance, and the installation position is as close as possible, and the installation angle is the same. The reason why multiple detection points are set is Because the gray density val...

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Abstract

A measuring method and device of equivalent attaching ash density of electric transmission and transformation equipment external insulation, it is on the theoretical basis of ash density accumulate ply influencing transmitted intensity, working out the ash density of dirtiness layer by comparing the change of light intensity passing dirtiness layer, the device is made up of multi optical detector teams,data acquisition unit and measuring terminal, optical detector teams is made up of the two optical detector teams in the same place, data acquisition unit is made up of multi data acquisition units, the invention can test the spot equivalent attaching ash density of electric transmission and transformation equipment external insulation expediently,effectively and truly, integrating monitoring on-line equipment of existing optical fiber type salt density, proving the data monitoring basis for ensuring the dirtiness grades of electric transmission and transformation equipment external insulation truly and guiding to repair realized state of equipment.

Description

technical field [0001] The invention belongs to the technical field of pollution flashover prevention for external insulation of power transmission and transformation equipment, in particular to a method and device for measuring the equivalent ash density of the external insulation of power transmission and transformation equipment. Background technique [0002] At present, the dirty external insulation design of my country's operating lines and power station equipment is based on the principle of cleaning once a year and the creepage ratio method on the basis of the distribution map of the polluted area. Many pollution flashover accidents in recent years have shown that pollution flashovers still occur even though the regulation has been carried out according to the regulations. It is impossible to prevent large-area pollution by determining the pollution level based on the maximum salt density in one year and configuring external insulation according to the creepage ratio d...

Claims

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Application Information

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IPC IPC(8): G01N21/94G06F19/00
Inventor 蔡炜黄兴泉张豫晓汪本进李伟陈勇代静
Owner WUHAN NARI LIABILITY OF STATE GRID ELECTRIC POWER RES INST
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