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Input material for a process, also called feedstock.
Speed range higher than the synchronous speed.
supervision control and data acquisition
Supervisory control and data acquisition (SCADA has the tasks control plants and to monitor, collect, store and analyse operating data.
An ecosystem condition in which biodiversity, renewability and resource productivity are maintained over time.
static VAR compensator
An arrangement in which two entities lend to each other on different terms, for example, in different currencies or at different interest rates, fixed or floating.
swept rotor area
Area swept by the rotating blades of a wind turbine.
A double walled evacuated glass tube
Electrical machine which generates electrical power and carries a DC current for the magnetisation in the rotor. Thus the speed of the generator is synchronously to the grid frequency.
An alternating current machine in which the frequency of the generated voltages and the speed of the machine are in a constant ratio.
System Average Interruption Duration Index
An indicator commonly used as a reliability indicator by electric power utilities. SAIDI is the average outage duration for each customer served. It is the sum of all customer interruption durations divided by the total number of customers served. Measured in units of time, hours per year or minutes per year.
A systematic deviation that has a non-zero average. Can be caused, for example, by errors in measurement devices. (syn. systematic error )
A systematic deviation that has a non-zero average. Can be caused, for example, by errors in measurement devices. (syn. systematic bias )