POWER September 2016 - 16

shift from spring to winter owing to climate
change. They also found that mean
annual hydropower potential will likely
decrease slightly from average conditions
recorded between 1980 and 2010 through
the end of the 21st century.
Tools that currently exist to assess
specific sites for their small-scale hydropower
potential " have not been able to
consider the impacts of future changes
in weather and climate, " and are " far too
dependent on data that is often unavailable
in developing nations, " the OSU researchers
said
The technology is available to anyone
on request by contacting Sharp (Kendra.
sharp@oregonstate.edu).
POWER Digest
UK Abolishes Climate Change
Department. As part of the major
governmental
shakeup triggered by
Brexit-the UK's momentous vote to
leave the European Union-newly appointed
UK Prime Minister Theresa May
announced in mid-July that her government
will replace the Department of Energy
and Climate Change (DECC) with a
Business, Energy, and Industrial Strategy
Department. The move was widely
criticized by environmental groups and
former ministers within the UK, as well
as by international observers, who issued
statements saying the decision
failed to encourage leadership on climate
change. Some experts and progreen
think tanks lauded the decision,
however, saying that merging the DECC
with the business and industry strategy
department would politically elevate
energy and climate issues.
Orders Pour in for World's First
1,100-kV UHVDC Power Link in
China. State Grid Corp.'s plans to link
China's Xinjiang region in the Northwest
to Anhui province in eastern China via
a 3,284-kilometer-long ultra-high-voltage
direct-current (UHVDC) transmission
link have resulted in lucrative orders for
Siemens and ABB. The 12-GW line is expected
to go into operation at the end
of 2018. Siemens on July 11 said it received
a contract to deliver the world's
first 1,100-kV converter transformers for
the project. The converter transformers,
which have a capacity of 587.1 megavolt-amperes,
are also the " world's most
powerful, " it said. Beatrix Natter, who
heads Siemens' transformers business
unit, said in a statement that to develop
the cutting-edge converter transformers,
the company worked to " meet the extraordinarily
stringent requirements imposed
on the insulation systems of these
high-tech transformers at a voltage level
of 1,100 kV. " For example, the two valve
bushings through which the current flows
from the interior of the transformers into
the converters are approximately 19 meters
(m) long, due to the necessary insulation
clearance in air. " With bushings,
the transformers are 37.8 [m] long, 5.85
[m] high and 5.20 [m] wide. With insulating
oil, they weigh 823 metric tons,
and the transport weight is 490 metric
tons, " she said.
On July 19, meanwhile, ABB said it
won orders worth more than $300 million
to supply equipment for the UHVDC line,
which it noted offers a nearly 50% increase
in transmission capacity compared
with the 800-kV UHVDC lines currently
in operation around the world. The comTurn
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POWER September 2016

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