Hydro in Europe: Powering Renewables - Full Report - Eurelectric
Hydro in Europe: Powering Renewables - Full Report - Eurelectric
Hydro in Europe: Powering Renewables - Full Report - Eurelectric
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Hz (hertz) Unit of frequency <strong>in</strong> cycles per second<br />
kW (kilowatt) Unit of power equal to 1,000 watts<br />
kWh (kilowatt hour) Unit of energy equal to the use of 1,000 watts for one hour<br />
Load The amount of electric power delivered or required at any specific<br />
po<strong>in</strong>t or po<strong>in</strong>ts <strong>in</strong> the electricity system<br />
Load factor Measure of output of a power plant compared to the maximum<br />
output it could produce<br />
Load levell<strong>in</strong>g A method for reduc<strong>in</strong>g the large fluctuations that occur <strong>in</strong> electricity<br />
demand, for example by stor<strong>in</strong>g excess electricity dur<strong>in</strong>g periods of<br />
low demand for use dur<strong>in</strong>g periods of high demand<br />
MW (megawatt) Unit of power equal to one million of watts<br />
MWh<br />
hour)<br />
(megawatt Unit of energy equal to the use of one million watts for one hour<br />
N1 criterion A rule applied to evaluate security of energy supply. It requires that <strong>in</strong><br />
case of tripp<strong>in</strong>g of a generation unit, a transmission l<strong>in</strong>e or a<br />
transformer, the security of energy supply should not be jeopardised<br />
NORDEL The Nordic Power System among Norway, Sweden, F<strong>in</strong>land and<br />
Denmark<br />
NREAP National Renewable Energy Action Plan<br />
Peak load The maximum electrical demand <strong>in</strong> a stated period of time.<br />
Primary control Automatically activated function of the turb<strong>in</strong>e governor to adjust the<br />
generator output of a unit as a consequence of a frequency deviation<br />
PSPP Pumped Storage Power Plant<br />
RBMP River Bas<strong>in</strong> Management Plan<br />
RES Renewable Energy Sources<br />
Secondary control The second frequency control level after primary control. Automatic,<br />
with purpose to restore frequency<br />
Sp<strong>in</strong>n<strong>in</strong>g reserves The plant capacity, <strong>in</strong> excess of actual load, which can be called on to<br />
produce electricity at very short notice<br />
TSO Transmission System Operators<br />
TW (terawatt) Unit of power equal to one trillion watts<br />
TWh (terawatt hour) Unit of energy equal to the use of one trillion watts for one hour<br />
UCTE Union for the Coord<strong>in</strong>ation of the Transmission of Electricity<br />
v RES Variable renewable energy sources (w<strong>in</strong>d and solar)<br />
w (watt) Unit of power<br />
WFD Water Framework Directive<br />
WWF World Wildlife Fund<br />
64