review of power system operation 2009 michael kelly
DESCRIPTION
Review of Power System Operation 2009 Michael Kelly. Daily Load Shape. 2006. Daily Load Shape. 2007. Daily Load Shape. 2008. Daily Load Shape. 2009. Demand Reduction. Wind Stats. 1161 MW installed (30/9/09) 16% of total capacity installed 7,174 MW(6,013+1,161) - PowerPoint PPT PresentationTRANSCRIPT
Review of Power System Operation
2009
Michael Kelly
Daily Load Shape
2006
Daily Load Shape
2007
Daily Load Shape
2008
Daily Load Shape
2009
Demand Reduction
Wind Stats
• 1161 MW installed (30/9/09)
– 16% of total capacity installed 7,174 MW(6,013+1,161)
• 999 MW max output (12/8/09)
– 43% of system demand (8/9/09)
• 0.1% of energy dispatched off (year to 30/9/09)
Wind PenetrationWind as percentage of System Demand
2009 daily min and max values
0
5
10
15
20
25
30
35
40
45
50
01
/01
/09
15
/01
/09
29
/01
/09
12
/02
/09
26
/02
/09
12
/03
/09
26
/03
/09
09
/04
/09
23
/04
/09
07
/05
/09
21
/05
/09
04
/06
/09
18
/06
/09
02
/07
/09
16
/07
/09
30
/07
/09
13
/08
/09
27
/08
/09
10
/09
/09
24
/09
/09
Date
%
Min 0.18 % on 13th Aug 2009 Max 43.2 % on 8th Sep 2009
Impacts• Lower risk of supply shortage
– Greater opportunity for transmission and generation maintenance
– Amber alerts 2008 = 33, 2009 = 2 (to date)
• Changed running regimes– Base load to mid merit
– Mid merit to peaking
• Greater Opportunity for transmission maintenance– Localised transmission restrictions
North West Transmission System• 2nd Oct 13:29
– 2 110kV lines on maintenance
– high wind and low demand
– 110kV Line from Golagh to Cathleen’s Fall is over loaded
Increasing Cycling of Generators
No of starts 2008 2009 % Increase
Base Load units 149 188 26%
Total Starts 5882 7254 23%
Performance Monitoring Why?• Need to know capability of system:
– Existing: Performance vs Standard– Impact of Changes e.g. Generation Portfolio
• Grid Code– Non Compliance of one user can result in lack
of access for another user and / or cost to end customer
Performance Monitoring What?
• Looked at some metrics from existing systems
• Will be discussing these with Users
• Developing a software system to produce regular reports
• Incentives…
• Contact: [email protected]
Best New Entrant
Wind Farm Control
• Direct control of 457 MW of wind from NCC
• Example
– 2nd Oct 13:29
– 110kV Line from Golagh to Cathleen’s Fall is over loaded
Winter 2009/2010
• Available Capacity– Conventional 6,013 MW– Wind 1,250 MW installed, 250 MW reliance
• Peak – 4,680 MW– 226 MW below 4,906 MW in December 2007
End