4/18/08DSWG Meeting
LaaR Response System Under-frequency Eventon 3/16/2008
Steve KreinERCOT Market Operations Support
2DSWG Meeting4/18/08
LaaR Deployment Performance 3/16/2008
ERCOT LaaR RRS Deployment 3/16/08
0
200
400
600
800
1000
1200
1400
11:30 11:35 11:40 11:45 11:50 11:55
Laa
R R
esp
on
se (
MW
)
59.75
59.8
59.85
59.9
59.95
60
60.05
60.1
625 MW of LaaRs Providing RRS trip on Under-Frequency at 11:37.56
LaaRs are recalled at 11:42
3DSWG Meeting4/18/08
LaaR Under-frequency Event
High Speed Frequency RecorderTaylor, TX
3/16/08 11:38
59.65
59.7
59.75
59.8
59.85
59.9
59.95
60
60.05
37:50 37:55 38:00 38:05 38:10 38:15 38:20Time (sec)
Fre
qu
ency
(hz)
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