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Revising method of power grid polluted area distribution map and power grid polluted area distribution map

A technology of power grid pollution area and distribution map, which is applied in the directions of measuring electricity, measuring electric variables, and testing dielectric strength, etc. Diversity and other issues

Active Publication Date: 2016-08-17
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the continuous change of the geographical environment and the diversity changes caused by the continuous extension of the power grid, the factors considered in the drawing and revision of the distribution map of the polluted area of ​​the power grid are still not comprehensive enough, and the factors that cause the various pollution components of the insulator are not fully considered.

Method used

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  • Revising method of power grid polluted area distribution map and power grid polluted area distribution map
  • Revising method of power grid polluted area distribution map and power grid polluted area distribution map
  • Revising method of power grid polluted area distribution map and power grid polluted area distribution map

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] According to the distribution map and soil distribution map of a power grid polluted area, three on-site insulator pollution sampling points were selected in each polluted area of ​​the area, and the sampling points were required to be evenly distributed in the polluted area as much as possible. The types are as different as possible, and the sampling point is convenient for sampling operation.

[0063]Then, according to the sampling points selected above, according to the standard "GB / T 26218.1-2010 Selection and Size Determination of High Voltage Insulators Used under Pollution Conditions: Part 1: Definitions, Information and General Principles", carry out pollution sampling of insulators at each sampling point , It is required to take pollution samples from the insulators that are actually running with electricity during the power outage maintenance period of the transmission line, and use the method of wiping the tower after the power outage to take samples. For tow...

Embodiment 2

[0072] According to the distribution map and soil distribution map of a power grid polluted area, three on-site insulator pollution sampling points were selected in each polluted area of ​​the area, and the sampling points were required to be evenly distributed in the polluted area as much as possible. The types are as different as possible, and the sampling point is convenient for sampling operation.

[0073] Then, according to the sampling points selected above, according to the standard "GB / T 26218.1-2010 Selection and Size Determination of High Voltage Insulators Used under Pollution Conditions: Part 1: Definitions, Information and General Principles", carry out pollution sampling of insulators at each sampling point , It is required to take pollution samples from the insulators that are actually running with electricity during the power outage maintenance period of the transmission line, and use the method of wiping the tower after the power outage to take samples. For to...

Embodiment 3

[0082] According to the distribution map and soil distribution map of a power grid polluted area, three on-site insulator pollution sampling points were selected in each polluted area of ​​the area, and the sampling points were required to be evenly distributed in the polluted area as much as possible. The types are as different as possible, and the sampling point is convenient for sampling operation.

[0083] Then, according to the sampling points selected above, according to the standard "GB / T 26218.1-2010 Selection and Size Determination of High Voltage Insulators Used under Pollution Conditions: Part 1: Definitions, Information and General Principles", carry out pollution sampling of insulators at each sampling point , It is required to take pollution samples from the insulators that are actually running with electricity during the power outage maintenance period of the transmission line, and use the method of wiping the tower after the power outage to take samples. For to...

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Abstract

The invention provides a revising method of a power grid polluted area distribution map. Based on ratio analysis of Al2O3 and SiO2 in insulator contamination of a soil sample, influences that soil difference causes diversified components of the insulator contamination are added, and the revising of the power grid polluted area distribution map is finished through field sampling analysis and artificial contamination testing, so that the power grid polluted area distribution map can relatively accurately describe contamination distribution properties of one area and can be adaptive to the diversity of the types of soil in the area and the contamination components, and the requirements on external insulation design and adjustment of power transmission and transformation facilities can be met.

Description

technical field [0001] The invention belongs to the technical field of power transmission and transformation design, operation and maintenance of a power grid, and in particular relates to a method for revising a power grid polluted area distribution map and a power grid polluted area distribution map. Background technique [0002] Transmission line insulators are exposed to the outdoors for a long time. Due to factors such as natural ash fall and industrial pollution, dirt will adhere to the surface and form a dirty layer. In an environment with high humidity, the dirty layer will absorb moisture and get damp, so that the soluble electrolyte in the dirty layer will dissolve, the dirty layer will start to conduct electricity, and a certain magnitude of leakage current will flow on the surface of the dirty insulator, which will gradually develop into partial discharge. When the arc develops and runs through the upper and lower electrodes of the insulator, a flashover occurs o...

Claims

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Application Information

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IPC IPC(8): G01N23/20G01R31/12
CPCG01N23/20G01R31/1245
Inventor 唐铭骏杨帅杨翠茹郑秋玮雷璟周文俊饶章权
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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