Title :
Controlled island operation of part of the 50-kV grid in Southern Sweden
Author :
Bollen, Math ; Samuelsson, Olof
Author_Institution :
STRI AB, Ludvika, Sweden
Abstract :
This paper is based on measurements obtained during a test of controlled islanding of part of the 50-kV grid in Southern Sweden. The purpose of the test was to verify operation of generator controls during islanding. The variations in voltage magnitude and frequency are shown as well as flicker severity and very-short variations. A number of performance indices have been calculated and compared with limits. Voltage magnitude and frequency have been studied in some detail around the disconnection and reconnection instants. The frequency varies much more during the island operation than during grid-connected operation. Voltage magnitude variations and flicker remain within their normal range. However the variations in the time range between 3 seconds and 10 minute appear to be higher than normal.
Keywords :
power generation control; power grids; power system measurement; Southern Sweden grid; controlled island operation; flicker severity; frequency variation; generator controls; grid-connected operation; power generation capacity; power system measurement; time 3 s to 10 min; voltage 50 kV; voltage magnitude variation; Frequency control; Frequency estimation; Inspection; Performance evaluation; Power measurement; Standby generators; Testing; Voltage fluctuations; Wind energy; Wind energy generation;
Conference_Titel :
PowerTech, 2009 IEEE Bucharest
Conference_Location :
Bucharest
Print_ISBN :
978-1-4244-2234-0
Electronic_ISBN :
978-1-4244-2235-7
DOI :
10.1109/PTC.2009.5282130
