Why Power Systems Need Icing Test Chamber?

Why Power Systems Need Icing Test Chamber?

1、Product use

Power ice cover refers to the process of ice formation on transmission lines under specific meteorological conditions such as low temperature and high humidity, where over-cooled water droplets or ice crystals in the atmosphere adhere to the lines. This ice-covering phenomenon will increase the weight of the line, change the mechanical properties of the line, and in serious cases may lead to line breakage, tower collapse and other accidents, posing a serious threat to the safe operation of the power system. Icing test chamber test is to simulate the natural ice-covering conditions, ice-covering test method for power equipment.

2、The test method

(1) Cooling

In the beginning of the ice-covering test, first of all, the artificial climate chamber should be reduced to the required temperature. Different temperature points will have different effects on the speed, time and formation of ice. By controlling the temperature, it is possible to simulate an ice-covering environment close to the actual one.

(2) Spray Icing

After reaching the predetermined temperature, the spraying of ice will begin. The sprayed water droplets should have a certain temperature and degree of over-cooling to ensure that an ice layer can be formed when it comes into contact with the cooled transmission line surface. The intensity and duration of the spray can be adjusted as necessary to simulate different degrees of ice cover.

(3) Hardening

After the completion of the spraying of ice, the ice layer needs to be hardened. The purpose of hardening treatment is to make the ice layer more firmly attached to the transmission line, closer to the actual situation. Hardening treatment is not sprayed state when the temperature is reduced, increase humidity and other ways to carry out.

(4) Power Failure Measurement

After the hardening of the ice layer, it is necessary to carry out various measurements with the power off. Measurements include line tension, curvature, electrical characteristics and so on. These measurements can reflect the impact of the ice cover on the performance of the line and provide an important basis for subsequent assessment.

(5) Degree of Ice Cover

After the measurement is completed, the extent of ice cover needs to be recorded in detail. The extent of ice cover can be measured by indicators such as ice cover thickness and ice cover density. These recorded data can be used to analyse the influence of ice cover on the performance of the line and provide reference for the design and operation of the power system.

(6) Ice Cover Density

In addition to recording the extent of ice cover, it is also necessary to assess the ice cover density. Ice cover density refers to the mass of ice per unit volume, which reflects the compactness and weight distribution of the ice. The assessment of ice cover density can be carried out by weighing and volumetric methods. It can be used to assess the carrying capacity of a line under ice-covered conditions.

(7) Description of ice cover condition

Finally, a description of the ice cover state is needed. The description should include information such as the morphology, distribution, and thickness of the overlying ice. This information can be recorded through photos, videos and other multimedia forms for subsequent analysis and research. At the same time, it is also necessary to carry out a comprehensive evaluation of the line performance under the ice-covered state to provide strong support for the safe operation of the power system.

3、Inner box size

According to the length of the cable, install the fixed bracket Inside according to the length of the line distribution of top spray, side spray, spray system.
Please consult with Huanyi Instrument



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