Dr Norman MacLeod, Director of Interconnectors · 2019. 7. 12. · NSL NG/Statnett Norway 1400...
Transcript of Dr Norman MacLeod, Director of Interconnectors · 2019. 7. 12. · NSL NG/Statnett Norway 1400...
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HVDC Innovation in Context
Dr Norman MacLeod,Director of Interconnectors
June 27 2019
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HVDC Schemes in UK
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Scheme Owner Country Power (MW)
DC voltage (kV)
In service date
IFA 11 NG/RTE France 2 x 1000 ±270 1985/862
Moyle1 Mutual Energy
Northern Ireland –Scotland
2 x 250 ±250 2002
BritNed1 NG/TenneT Netherlands 1000 ±450 2011
EWIC EIDAC Ireland 500 ±200 2013
Caithness – Moray
SSE Scotland 800/1200 ±320 2018
Western Link1
NG/SPT Scotland –Wales
2200 ±600 2019
NEMO NG/Elia Belgium 1000 ±320 2019
HVDC schemes in commercial operation
1 Line Commutated Conveter (LCC) technology2 Valves, controls and cooling up-graded in 2012/13
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Scheme Owner Country Power (MW)
DC voltage (kV)
In service date
Eleclink Eleclink France 1000 ±320 2019
NSL NG/Statnett Norway 1400 ±525 2021
IFA 2 NG/RTE France 1000 ±320 2020
HVDC schemes in construction
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Scheme Owner Country Power (MW)
DC voltage (kV)
In service date
Viking NG/Energinet Denmark 1400 ±525 2024
Shetland1 SSE Scotland 600 ±320 2024
Greenlink Element Power
Ireland 500 ±320 2023
Aquind Aquind France 2 x 1000
±320 2024
Neuconnect Neuconnect Germany 1400 ±525 2024
Gridlink Gridlink France 1400 ±525 2024
Fablink Transmission Investments
France 1200 ±320
HVDC schemes in planning
1 Forms a multi-terminal with Caithness - Moray
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Scheme Owner Country Power (MW)
DC voltage (kV)
In service date
Western Isles
SSE Scotland 450 ±320 2023
North Connect
North Connect
Norway 1400 ±525 2023
Eurolink NG/TenneT Netherlands 1400 ±320 2030
Nautalis NG/Elia Belgium 1400 ±320 2028
Marex1 Marex Ireland 750 ±320 2025
Eastern link E2DC
SPT/NG Scotland –England
2000 ±500 2027
Eastern link E4DC
SSE/NG Scotland –England
2000 ±500 2028
HVDC schemes in planning
1 Multi-terminal system
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Scheme Owner Country Power (MW)
DC voltage (kV)
In service date
Tarchon Volta partners
Germany 1400 ±525 2026
Cronos Volta partners
Belgium 1400 ±525 2026
Aminth Volta partners
Denmark 1400 ±525 2026
Atlantic super connection
Atlantic super connection
Iceland 1000 2024
HVDC schemes in planning
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Scheme Owner Country Power (MW)
DC voltage (kV)
In service date
Norfolk Vanguard
Vattenfall 1800
Norfolk Boreas
Vattenfall 1800
Sofia Innogy 1400
OFTO schemes in planning
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HVDC Schemes Number Power (MW)
Operational 7 8000
Construction 3 3400
Planning 18 22500
Total 28 33900
Summary
OFTO Schemes Number Power (MW)
Operational 0
Construction 0
Planning 3 5000
Total 3 5000
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− Multi-infeed conditions, with converters at the same or adjacent PCCs
− Multi-terminal systems, converters supplied by different vendors
− Converters from multiple suppliers with different control characteristics
− Power, reactive power, voltage, frequency
− Emergency power control
− Black start
− Compliance with GB Grid Code and European Grid Code
Issues Related to Multiple HVDC schemes in UK
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− Concern about mixed HVDC technologies at the same PCC
− EWIC (VSC) - Western link (LCC)
− IFA 1 (LCC) – Eleclink (VSC)
− BritNed (LCC) – Eurolink (VSC)
− No issues reported from EWIC or Western Link – so far
Issues Related to Multiple HVDC schemes in UK
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− Decreasing levels of synchronous generation on the network
− Lower inertia
− Lower Short Circuit Levels
− VSC HVDC may not perform well at SCR <2.0
− Impact of network perturbations, faults, routine switching, etc.
− Need to reduce power level
− Availability of digital models of generators for interaction studies
− Synchronous generators
− Non-synchronous generators
Issues Related to changing generation in the UK
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− Possible adverse control interactions from converters
− STATCOMS
− Wind Farms
− Battery storage
− PV arrays
− Built by multiple vendors with no coordination
− Need for interaction studies to anticipate issues which may arise
Impacts of Adjacent Converters on the Network
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− Interaction studies – transient and dynamic
− Adjacent HVDC converters
− HVDC and Other converters
− Digital studies− Availability of good “black box” models
− Risk of loss of IP by vendors
− Hardware in the Loop testing, using RTS− Replicas
− Secures IP of vendors
What is needed – Studies
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− Development of new HVDC converter topologies
− Lower cost
− Lower losses
− Smaller footprint – OFTO applications
− Fault blocking capability
− Development of new equipment− Higher current semi-conductors
− DC circuit breakers (multi-terminal)
− DC/DC converters (supergirds)
− Power flow controllers (meshed systems)
− DC GIS/GIL non-SF6 insulant (off-shore)
What is needed – Innovation
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− Increased functionality− Operation into low SCR
− Synthetic inertia
− Fast frequency response
− Damping of system resonance conditions
− Improved protection systems− Converter protection
− Network protection
− Transducers
− Communication
− Use of AI capabilities
− Cyber security for major national assets
What is needed – Innovation
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Any Questions?
Thank you for your AttentionAny Questions?