Monday, November 24, 2008

Ultra-High Voltage Transformer

A new transformer developed for the world’s first ultra high-voltage DC transmission systems (UHVDC) has successfully completed final testing. It is the first transformer for the new 800 kilovolts (kV) HVDC in China. Today’s HVDC transmission systems normally operate at a standard transmission voltage of 500 kilovolts. HVDC systems can transmit power over much greater distances and at considerably reduced loss than is possible with AC systems.

To achieve this 60-percent increase in peak voltage capacity, Siemens had to develop a range of entirely new technical solutions for the new 800-kilovolt HVDC transmission system. One of several major challenges facing the company’s development engineers in Nuremberg was a lack of any defined standards for this scale of system. Due to the very high operating voltage, for example, they had to design exceptionally effective insulation systems. Therefore, in order to achieve the needed insulating clearances in air, the two valve bushings through which the current flows from inside the transformer to the converters are 14 meters in length. To construct the 800 kV transformers, a new, specially air-conditioned production hall had to be built to prevent the insulation from absorbing moisture from the atmosphere during final assembly. Similarly, the test facility in the Nuremberg factory had to be adapted to accommodate the tremendous increase in voltage when carrying out final acceptance testing on the new transformer.


At November 25, 2008 9:40 AM , Blogger Michael said...

There is a new world wide web emerging right before our eyes.

It is a global energy network and, like the internet, it will change our culture, society and how we do business. More importantly, it will alter how we use, transform and exchange energy.

Enough solar energy falls on the surface of the earth every 40 minutes to meet 100 percent of the entire world's energy needs for a full year.

There is no energy supply problem, there is an energy distribution problem -- and the emerging solution is a new world wide web of electricity.

For more information, see

At June 13, 2009 1:53 PM , Anonymous Anonymous said...

you kidding me, guy? this is all a hoax. period.

At December 26, 2009 5:29 AM , Anonymous Anonymous said...

Hello! I'm newbie in Internet, can you give me some useful links? I know only about Yahoo [url=]Yahoo[/url] Yahoo

At May 12, 2010 10:11 AM , Anonymous Arc Flash Guy said...

Hmmm mr anon, I'm not so sure its a hoax, its on the siemens domain too.

Nearly a million volts though, I'll bet that'd jump a mile.


Post a Comment

Links to this post:

Create a Link

<< Home