View
4
Download
0
Category
Preview:
Citation preview
East-West HVDC Interconnector
6 May 2015 – ISGAN Webinar
Séamus Power (EirGrid)
6 May 2015
Context
Min / Max Demand (All-Island)
2,300 MW / 6,500 MW
Installed Generation
Conventional: 9,901 MWWind: 2,825 MW
Interconnection
750 MW
2020 RES Targets
40%
Fuel Mix
GasCoalWindImportsPeatCHPHydroOther
6 May 2015 3
• 500 MW HVDC-VSC Interconnector linking Ireland & Northern Ireland system to Great Britain system
• €570m investment
• 264 km of DC cable
• Commenced: 2007
• Completed: 2012
• Contracts to
commercial operation
in 45 months
What is the East-West Interconnector?
6 May 2015 4
Objectives and Benefits
• Provide additional capacity
• Reduce dependence on imported fuels
Security of Supply
• Exert downward pressure on price
• Direct access to GB market
Promote Competition
• Reduce RES curtailment
• Assist meeting RES targets Accommodate
RES
6 May 2015 5
• Choice of technology key - HVDC VSC – Represents the optimum whole-
life techno-economic solution
– Well-suited to the technical characteristics of island systems
• Environmentally friendly XLPE cable utilised
• Performance during transient events
Technology
6 May 2015
6
Advanced Ancillary Services
• Very fast active power response for high and low frequency events
Frequency Response
• Speed up restoration of grid in event of major blackout Black Start
• Steady-state reactive power
• Voltage support during faults Voltage Control
6 May 2015
7
Community Engagement
(construction phase)
Full-time community
liaison officers
Funding for local projects & improved
safety
Engagement with primary
schools
Disruption minimised
Local information
offices
6 May 2015 8
Current Status and Results
30
40
50
60
70
80
90100
110120
130140
150
0%10%
20%30%
40%50%
60%70%
80%90%
100%
Load
-Wei
ghte
d A
vera
ge S
MP
(€/
MW
h)
Percentage of Days in Year
Load-Weighted Average SMP per Trading Day with EWIC ON vs EWIC OFF
01/05/2013 - 30/04/2014
EWIC ONEWIC OFF
9% Average
Saving
6 May 2015 9
• Countertrading reducing RES curtailment
• 300 GWh between July and December 2013
Current Status and Results
-300
-200
-100
0
100
200
300
400
500
0
1000
2000
3000
4000
5000
6000
7000
8000
00
:00
02
:00
04
:00
06
:00
08
:00
10
:00
12
:00
14
:00
16
:00
18
:00
20
:00
22
:00
00
:00
02
:00
04
:00
06
:00
08
:00
10
:00
12
:00
14
:00
16
:00
18
:00
20
:00
22
:00
EWIC
Flo
w (
MW
) (I
mp
ort
po
siti
ve)
De
man
d /
Win
d G
en
era
tio
n (
MW
)
Time
Demand Wind EWIC
20/10/2014 21/10/2014
6 May 2015 10
• Choice of technology key
• Developing and maintaining good stakeholder relationships
• Separate project managers for Ireland, Great Britain and marine works
Lessons Learned and Best Practices
6 May 2015 11
Next Steps
6 May 2015 12
Thank You!
Recommended