the national hvdc centre
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The National HVDC CentreUse of HVDC and Large-scale Power Electronics to address Frequency stabilityBen Marshall, Technology Manager, National HVDC Centre,GBMulti-DC: 23/09/21
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222/09/2021
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322/09/2021
Agenda
1) What is GB frequency stability, and what influences that?
2) HVDC and large- scale Power electronics- how have they been used to support frequency stability?
3) HVDC and large –scale Power electronics in the Future
4) Future risks, Opportunities and areas of R&D priority
5) Managing Interoperability.
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Frequency Stability in GB:
Minimising frequency “drift”
Responding to frequency movement
(Frequency moves differently across
the system during an event)
Damping frequency
following an event
Containing frequency movement
(avoiding cascade loss)
https://www.nationalgrideso.com/document/63481/download
Key ingredients today
System inertiaFrequency regulation
Static and dynamic responses
https://www.nationalgrideso.com/document/144441/download
http://powerresponsive.com/wp-content/uploads/2021/01/PR-Steering-Group-Slides-21st-January-2021.pdf
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How HVDC & Power Electronics used today:
Services in development by NGESO
Services in use by NGESO
Technologies and their capabilities over time…
https://www.nationalgrideso.com/document/188666/download
https://www.nationalgrideso.com/document/188666/download
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The future…
1) NOA stability Pathfinders – GB Grid Forming Converters.
2) Offshore co-ordination- multi-purpose HVDC arrangements, with Grid forming resources and properties.
3) Wide Area enabled/ informed frequency support- follow-ons from EFCC
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Risks and opportunities..
1) Guarding across new vulnerabilitiescontrol interaction, ride-through, new areas of compliance demonstration and data exchange.
2) “Last Man standing” challengesmonitoring integration of Grid forming resources & resilience of residual synchronous technology- PMU monitoring; phase step responses Offshore co-ordination- multi-purpose HVDC arrangements, with Grid forming resources and properties.
3) Delivering interoperability across more complex Power Electronic concepts with new more extensive performance needs, at scale & at pace!
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Hosted simulation Environments
Concluding point… managing the complexities.
“Old School” verification process- oriented around Synchronous generation-no longer sufficient…
New verifications with more detailed and more extensive simulation needs
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www.hvdccentre.com