CIGRE e-Session 2020 (SC A3 & B4) | Forum on HVDC Grid ......Hypersim: proprietary driver / ICD files • IEDs: opensource C library • Communication architecture: semantics, links,

© PROMOTioN – Progress on Meshed HVDC Offshore Transmission Networks This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 691714.

Demonstration of non-selective fault clearing strategies for meshed HVDC networks

CIGRE e-Session 2020 (SC A3 & B4) | Forum on HVDC Grid Technologies – HVDC Grid Protection

North Sea Grid for the European New Deal How to unlock Europe’s Offshore Wind potential – a deployment plan for meshed HVDC grid


Research engineer

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William LEON GARCIA

• EXPERIENCE• PhD in electrical engineering research on HVDC

grid protection and applied superconductivity• 3-years in HIL testing, real-time simulation and

prototyping at SuperGrid Institute

• PROJECT ROLE• Technical leader of tasks

T9.7 and T9.8 in WP9:Demonstration of non-selective fault clearing strategies for meshed HVDC networks

[email protected]+33 (0) 6 69 28 48 63



Forum on HVDC Grid Technologies (SC A3 & B4) – HVDC Grid Protection – Demonstration of non-selective fault clearing strategies for meshed HVDC networks

3

Objectives and scopeHILTesting

SupervisionSystem recovery

InteroperabilityAssessment

Sequences validationPrimary and backup

Benchmark gridTests guidelines

RTS modelIntegration

CBSConverter

Breaker protection

Strategy

FBSFull Bridge converter based protection Strategy

HVDC protectionDemonstration

Non-selectiveschemes



5

Demonstration workflowOPEN-LOOP CLOSED-LOOP

SIL HIL

MeshedHVDC network

HYP

ERSI

M

Pre-defined instructionsand timing

Case scenario

Controlblocks

IEC

6185

0

Protection relaycontroller codes

HYP

ERSI

M

Supervisioncontroller codes

MeshedHVDC network

SupervisionIEDs

Protectionrelay IEDs

HYPERSIM

IEC61850

IEC61850

MeshedHVDC network



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Hardware-in-the-loop setup

MobaXterm

SV-GOOSE

Packet tracing

IEDsPlant : 4T MTDC NetworkTimestep : 50 us

ICD Designer



7

HIL plant – Four-terminal meshed HVDC networkConverter breaker fault clearing strategy Full-bridge MMC based fault clearing strategy



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Communication architecture – OverviewConverter breaker fault clearing strategy Full-bridge MMC based fault clearing strategy



• Interoperability through standardization• Fast Ethernet communication• Hypersim: proprietary driver / ICD files• IEDs: opensource C library• Communication architecture: semantics, links, IDs

9

IEC 61850Industrial communication standard

IEC61850 Class Oriented Semantics ICD Designer



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Devices under test – IED* prototypes*Intelligent Electronic Devices

Raspberry-Pi basedIED Prototype

C code algorithmsLow-level languageFast execution times

FlexibleStructured

MethodsClasses

main.c embedded on RPI

Protection IEDs• Coded from specifications

• WP4• Simulink blocks

• Algorithms• Overcurrent/Undervoltage• Voltage derivative• Current direction

• Integration and testing• SIL in Hypersim• HIL in RPI-based IED

Supervisor State Diagram

Supervision IEDs• Design with SUPREMICA

• State diagram system

Algorithms• Exported C code

• Integrated and tested• SIL in Hypersim

• HIL in IED prototype



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ResultsPole-to-ground faultCable 24 (@50km)

Time (s)

Bus 2Bus 1

SUBSTATION 1 SUBSTATION 2

Bus 3

SUBSTATION 3

Bus 4

SUBSTATION 4

350 km150 km

300 km

100 km

ACBM1

MMC2

CBM3

LBM4

1 AC breaker module2 Modular multi-level converter3 Converter breaker module4 Line breaker module

1 2 3 4

1 2 3 4

12 14 21 2413 41 42

Station 4

Station 3

Station 2

Station 1

Central Superviso

r

Legend



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Summary

• KPI calculation• Extensive testing• IEDs maintenance

• Protection• Supervision

• Benchmark grid evolution• Robustness studies

• Communication network

HILProtection and Supervision IEDs tested

SupervisionSystem supervision designed,implemented and tested

InteroperabilityImplementation of the IEC61850industrial communication standard

Sequences validationPrimary and backupsequences validated through HIL

Benchmark gridTwo 4-terminal HVDCnetworks implemented

RTS modelHVDC breaker and MMCmodels integrated to Hypersim

HVDC protectionDemonstration

Non-selectiveschemes

Next steps

Thank you for your attention. For further questions, don't hesitate to contact me.

William LEON [email protected]+33 (0) 6 69 28 48 63


Demonstration of non-selective fault clearing strategies for meshed HVDC networksWilliam LEON GARCIAObjectives and scopeDemonstration workflowHardware-in-the-loop setupHIL plant – Four-terminal meshed HVDC networkCommunication architecture – OverviewIEC 61850�Industrial communication standardDevices under test – IED* prototypes�*Intelligent Electronic DevicesResults�Pole-to-ground fault�Cable 24 (@50km)SummaryThank you for your attention. For further questions, don't hesitate to contact me.

Documents

CIGRE e-Session 2020 (SC A3 & B4) | Forum on HVDC Grid ......Hypersim: proprietary driver / ICD files • IEDs: opensource C library • Communication architecture: semantics, links,