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Overhead Power Cables Affected By Weather Changes
Manage episode 332525820 series 3294436
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The electric system is made up of hundreds of electromechanical components that are coupled together, and its functionality is influenced by weather conditions. Humidity, temperature, pressure, wind speed, direction, and pollution are among the most essential elements -of the transitory conditions we call weather- taken into account in the electric sector. The relevance of each weather characteristic varies by grid level and stage, which can be split into three categories: power generation, transmission, and distribution. Read this entire article to find out how weather changes affect overhead transmission lines.
Conductors expand when exposed to high temperatures, increasing length. In low-temperature situations, the opposite is true. The length change varies from one conductor to the next, depending on the conductor's thermal expansivity. When the conductor temperature varies from 100 to 0°, the length of copper conductors changes by 5 feet every 1000 feet, while aluminium conductors change by roughly 7 feet. The length grows as the temperature rises and decreases as the temperature falls.
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