What are the impacts of low air pressure in high-altitude areas on the electrical system of photovoltaic tracking brackets?

The low pressure in high-altitude areas mainly has the following impacts on the electrical system of photovoltaic tracking brackets:

The impact on insulation performance: Low air pressure can reduce the insulation strength of air, which may lead to a smaller creepage distance and air gap of electrical equipment, making it more prone to discharge, thereby affecting insulation performance and increasing the risk of short circuits and other faults.

The impact on heat dissipation: A decrease in air pressure will result in a decrease in the convective heat dissipation effect of the air. Some heating components in electrical systems may experience temperature rise due to ineffective heat dissipation, affecting their normal operation and even shortening their service life.

The impact on switchgear: Low air pressure may reduce the arc extinguishing ability of the switchgear, and there may be situations where the arc cannot be extinguished in a timely manner during the opening and closing operation, thereby damaging the switchgear.

The impact on electronic components: Some electronic components that are sensitive to air pressure may experience unstable performance or abnormal operation, such as the accuracy of certain sensors.

Impact on sealing components: It may lead to an increase in pressure difference between the inside and outside of the sealing components, resulting in sealing failure, air leakage, and other problems, thereby affecting the normal operation and protective performance of the electrical system.

For example, in the electrical system of photovoltaic tracking brackets in high-altitude areas, there may be phenomena such as discharge inside the switchgear, insensitive contactor action, and unstable control circuits. In order to reduce these impacts, it is necessary to fully consider high-altitude factors in design and selection, and take targeted measures, such as strengthening insulation design, improving heat dissipation methods, and selecting electrical components suitable for high-altitude.