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Method for measuring accumulation of external insulation pollution of electric transmission and transformation equipment

A technology of power transmission and transformation equipment and external insulation, which is applied in the field of power transmission and transformation, can solve problems such as large amplitude, unfavorable regulation and creep, and rapid pollution changes, and achieve the effect of short measurement time

Inactive Publication Date: 2009-12-30
GUANGDONG POWER GRID CO LTD DONGGUAN POWER SUPPLY BUREAU
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Problems solved by technology

Due to the rapid change of pollution in many areas of our country and the large range, completely copying this international standard will not allow us to obtain an accurate pollution level assessment as soon as possible, and it is not conducive to timely arrangements for adjustment and climbing.

Method used

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  • Method for measuring accumulation of external insulation pollution of electric transmission and transformation equipment

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Embodiment Construction

[0022] figure 1 It represents an operation flow chart of the present invention. In this embodiment, step 101: select at least one measurement location according to the geographical distribution of power transmission and transformation equipment. Step 102: At each selected measurement location, hang a string of insulator strings consisting of at least four pieces of suspension insulators in the early stage of the rainy season of the measurement year, and it is generally considered to hang 6 pieces of suspension insulators. Suspension insulators generally choose standard type insulators, such as XP-7 insulators. Step 103: According to the local weather forecast, the expected start time of the dry season. Step 104: Collect and measure the dirt content W of the first insulator after removing the top and bottom insulators of the insulator string 1 . Insulator pollution is generally collected manually with a sampling cloth, which can measure salt density, dust density, or one of ...

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Abstract

The invention relates to a method for measuring the accumulation of the external insulation pollution of electric transmission and transformation equipment, which comprises the following steps: in the early period of a rainy season, hanging a string of insulators at each selected measuring location; and when a dry season begins according to prediction, collecting and measuring the pollutant content of the first insulator; after a sampling interval of one dry day, collecting and measuring the pollutant content of the second insulator. Thus, the process can calculate pollution accumulation rate and pollution accumulation change state and provide calculation data for acquiring the maximum pollution accumulation state in a certain region during a period of n years.

Description

Technical field [0001] The invention relates to a measurement method in the technical field of power transmission and transformation, in particular to a method for measuring the accumulation of pollution on the external insulation of power transmission and transformation equipment. Background technique [0002] Dirt is the primary condition for the reduction of external insulation strength, and the accumulation of pollution is the main factor causing pollution flashover. To prevent pollution flashover, there must be a scale to measure the degree of pollution, and external insulation equipment manufacturers, power transmission and transformation equipment design units, and operating units have a reference basis. The chemical composition of pollution accumulated in the external insulation of power transmission and transformation equipment is very complex, and the parameters used to equivalently represent the degree of pollution include salt density and dust density. Pollution...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/02G01N33/00
Inventor 陈锡阳刘刚高明振尹成梁竞雷杨挺
Owner GUANGDONG POWER GRID CO LTD DONGGUAN POWER SUPPLY BUREAU
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