TenneT希望不碍眼和低辐射能减少人们对修建新电塔的异议。
That is important for two reasons.
主要因为两点,
One, the alternativeburying high-tension linesis expensive and largely futile.
首先,掩埋高压线这一替换既贵又不实用。
The cost of putting a cable underground is between four and ten times as much as that of carrying it on a pylon.
把电缆埋在地底的花费是架电塔的四到十倍。
On top of that, the field generated by an alternating current interacts with the ground more strongly than it does with the air.
除此之外,在地下交流电相互影响产生的磁场比在空中强烈很多。
This creates losses 40 times higher in a buried cable than in an aerial one. Unless the long-distance-transmission system were converted to direct current, burial of transmission lines is not a serious option.
地底铺线比高空架线成本高了40倍。除非长距输电系统转换成直流电,地下输电才不至于是个笑话。
The second reason TenneTs pylons may be important is that despite these problems a lot of new long-distance-transmission lines are going to have to be constructed, soon. Wind power from the North Sea and the Atlantic Ocean will require that.
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