Test method for contamination of insulators
A test method and insulator technology, applied in the test field, can solve the problems of impact and large data dispersion, achieve the effect of standardized test process, convenient collection of pollution, and elimination of interference from human factors
Active Publication Date: 2016-08-10
STATE GRID CORP OF CHINA +2
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[0003] When analyzing the pollution of insulators, the methods currently used mainly include: one is to conduct field tests, that is, hang different insulator samples on the same line or converter station, and then analyze after a certain period of pollution. The disadvantage is that due to the influence of the external environment, the dispersion of data is large; the second is to use the calculation of the wired element method to analyze the influence of the umbrella shape on the airflow field when the airflow flows through the surface of the insulator, so as to compare the pollution characteristics of different insulators. This method is relatively simple in operation and only needs to be calculated, but the correctness of the final result needs to be assisted by experiments
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[0022] The present invention will be further elaborated below by describing a preferred specific embodiment in detail in conjunction with the accompanying drawings.
[0023] Insulator contamination test method, the method includes the following steps:
[0024] Step 1. Place the insulator in distilled or deionized water, wash off the dirt and dry it, and then place the insulator in the wind tunnel test device;
[0025] Step 2. Turn on the wind tunnel test device and conduct a blowing test on the insulator. The wind speed for the blowing test is 4.5 m / s, and the air supply time is 20 minutes. The air supply is accompanied by pollution. The pollution consists of 80% kaolin and 20% mixed with sodium chloride;
[0026] Step 3. Put the insulator in the fog environment, and the insulator lasts for 10 minutes in the fog environment;
[0027] Step 4. Conduct the rain test on the insulator, and soak the insulator in the rain for 15 minutes;
[0028] Step 5, drying the insulator, and ...
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The invention discloses an experimental method for insulator dirt deposition. The experimental method for the insulator dirt deposition comprises the following steps: placing an insulator in a wind tunnel experiment device, starting the wind tunnel experiment device to carry out a blowing test on the insulator, placing the insulator in a fog environment, carrying out a rainfall test on the insulator, carrying out drying on the insulator, collecting dirt on the surface of the insulator, and analyzing an experimental result. The experimental method for the insulator dirt deposition is simple in setting, the experiment is carried by repeating a plurality of procedures, and the experimental result is closer to a true value. Dirt collection is more convenient and more complete. An experiment flow is standard, and the interference of human factors is eliminated.
Description
technical field [0001] The invention relates to a test method, in particular to an insulator contamination test method. Background technique [0002] Solid or liquid particles suspended in the air deposit on the surface of the insulator, forming a fouling layer. This pollution process is mainly determined by the force that the pollution particles receive near the insulator, and also by the adhesion force when the pollution particles are in contact with the surface of the insulator. There are two kinds of dirty particles that are often suspended in the air: one is ultrafine particles (diameter less than 1 μm) that undergo Brownian motion with gas molecules, permanently suspended, and has a relatively small effect on insulator pollution; the other is mineral dust flying from the ground , organic particles, smoke and dust emitted from factory chimneys, as well as droplets from sea wave machines and salt water droplets carried by sea breeze. Contaminate the surface of the insu...
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IPC IPC(8): G01R31/00
Inventor 肖嵘王海峰邵宇鹰郑颖
Owner STATE GRID CORP OF CHINA