High-voltage wires with reinforced iron bones are not as strong as you think. A super typhoon can scar the power grid. When you see this, maybe everyone has a question like the editor, why can't we bury all high-voltage wires underground like urban underground cables, so that we can do it once and for all, how much Are you afraid of typhoons? The editor will now take you with you to pick up the reason. At present, there is no effective insulating material to be used as the outer layer of the wire sheath for ultra-high voltage power transmission. Therefore, the ultra-high voltage wires are exposed and cannot be buried underground. Secondly, there are distributed capacitances around the wires, and current can leak out through these capacitances, which increases consumption on the one hand; on the other hand, if any animal approaches, there is also a danger of electric shock. Air is an insulator, but the earth is a conductor. It is different in the air. As long as the wires are directly placed in the air, the contact of some media can be avoided, but in the underground, layers of insulating casings need to be added to the wires, otherwise the leakage problem cannot be solved. Underground cables are more complex in structure than overhead lines, have higher technical requirements, and are difficult to manufacture and construct. In addition, the cables are buried underground, so it is not easy to find faults, and it is also difficult to repair and maintain. Generally speaking, the cost of underground cables of the same voltage level will be several times or even dozens of times that of high-voltage lines in the air. No one wants a power outage, but the power supply does not know how to hide from the ground. Once a fault occurs, it is necessary to "dig three feet in the ground" to check and repair the cables. First, they have to go through the procedures for digging "underground passages"; then, they have to work overtime to dig tunnels; then they have to check the underground cables one by one to find the fault point; finally, they can find the right medicine for the fault point. This delay is all the time of the big guys, and the power supply is also very wrong. They really want to restore the power quickly. Power Cable,Power Cord,Vfd Cable,Armor Power Cable Baosheng Science&Technology Innovation Co.,Ltd , https://www.bscables.com