Why Can’t High-Voltage Cables Be Buried in the Ground?


Ultra-high voltage transmission refers to the use of 500 kV-1000 kV voltage levels to transmit electrical energy. If the 220kV transmission indicator is taken as 100%, the relative investment per kilometer of UHV transmission, the relative cost of 100 kilometers per kilowatt-hour of electricity transmission, and the consumption of metal materials will be greatly reduced. In this way, the utilization rate of the line corridor has been significantly improved.

In our daily life, we can often see overhead ultra-high voltage transmission projects. However, have you ever thought about this question: Why can’t all high-voltage cable be buried underground like urban underground cables? 

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