25GW of distributed wind on the UK Electricity System
Author:
“¢ The UK government aims to increase renewable energy provision into the
into the UK national electricity grid. They have a target of 15% electrical
energy by 2015 and an aspiration of 20% by 2020
“¢ Wind is an uncontrolled energy resource, it blows when it wants.
“¢ Integrating this level of wind into a highly controlled grid system brings new
challenges
“¢ EoN Netz in Germany and Avista Utilities in California have both declared
that managing power variations from wind is problematic
“¢ This study has assessed the impact 25 GW of wind will have on the grid.
This represents 16% of energy at a Capacity Factor of 30%
“¢ In particular the power variations of a distributed wind fleet is assessed and
found to be
”“ Highly volatile, combining large magnitudes of power fluctuation and high rates of change
”“ To balance the grid, other generators will be required to vary output
”“ Reduce the opportunity for other renewable generators to supply electricity
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