performance demonstration of hvdc substation equipment ... · hvdc network control mmc test bench...

07/03/2018

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

Performance Demonstration of HVDCsubstation equipment

Demonstration der Eignung undLeistungsfähigkeit von HGÜ SchaltanlagenStuttgarter Hochspannungssymposium 2018, 6th & 7th of March 2018Uwe Riechert, Jenny Josefsson, Cornelis Plet, Semere Mebrahtu-Melake, Arman Hassanpoor


PROMOTioN - Context

European Commission energy strategy 2030

cut ingreenhouse gas

emissionscompared to1990 levels

share ofrenewable

energyconsumption

energy savingscompared with

the business-as-usual scenario

electricityinterconnection

target

40% 27% 27% 15%

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PROMOTioN - Context

Why meshed grid?

• Different types of offshore users• Consumers• Producers• Interconnectors

• Traditionally connected point-to-point,dedicated connection• Lower utilisation• Reliability offshore

• Mesh offers benefit


PROMOTioN - Context

Challenges

=~

• Offshore requires cables & platforms• Long cables require HVDC• HVDC requires converters• HVDC network requires HVDC

control & protection system• HVDC protection system requires

HVDC switchgear / circuit breakers• Transnational network

• Regulations• Business models• Financing

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PROMOTioN – Project organisation

Work packagesWP1 – Requirements for meshed offshore grids - TenneTWP1 – Requirements for meshed offshore grids - TenneT

WP2

Grid topology& Converters

RWTH Aachen

WP2

Grid topology& Converters

RWTH Aachen

WP3

WTG –Converterinteraction

DTU

WP3

WTG –Converterinteraction

DTU

WP4

HVDC GridProtection Sytems

KU Leuven

WP4

HVDC GridProtection Sytems

KU Leuven

WP5

Testenvironment

for HVDC CB

DNV GL

WP5

Testenvironment

for HVDC CB

DNV GL

WP6

HVDC CBperformance

characterisation

UniAberdeen

WP6

HVDC CBperformance

characterisation

UniAberdeen

WP7

Regulation &Financing

TenneT

WP7

Regulation &Financing

TenneT

WP9

Protection systemdemonstration

SHE Transmission

WP9

Protection systemdemonstration

SHE Transmission

WP10

HVDC Circuit Breakerdemonstration

DNV GL

WP10

HVDC Circuit Breakerdemonstration

DNV GL

WP11 – Harmonisation towards standardisation - DTUWP11 – Harmonisation towards standardisation - DTU

WP13

Dissemination

SOW

WP13

Dissemination

SOW

WP14

ProjectManagement

DNV GL

WP14

ProjectManagement

DNV GL

WP16

MMC Test bench demonstrator

RWTH Aachen

WP16

MMC Test bench demonstrator

RWTH Aachen

WP12 - Deployment plan for future European offshore grid - TenneTWP12 - Deployment plan for future European offshore grid - TenneT

WP15

HVDC GISDemonstrator

ABB

WP15

HVDC GISDemonstrator

ABB


PROMOTioN - Demonstrators

Demonstrators

HVDC network protection

Multi-terminal test centreSSE TransmissionGlasgow, UK

HVDC network control

MMC test benchRWTH AachenAachen, Germany

HVDC circuit breakers

KEMA High Power LabDNV GLArnhem, Netherlands

HVDC gas insulatedsystem

KEMA High Voltage LabDNV GLArnhem, Netherlands

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PROMOTioN – The Project

Partners


HVDC Breaker

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PROMOTioN – HVDC Breaker

Principles of AC / DC interruption

AC interruption:Capture the swinging mass in its outerposition (current zero).Zero kinetic energy

DC interruption:Oppose the motion of a linearly movingmass (counter voltage)

15 kA in 100 km line = 11 MJ= 30 ton train at 100 km/h



HVDC circuit breaker stress analysisAC interruption

DC interruption

• Circuit breaker passive• System imposes current• System imposes TRV• Test synthetically

• Circuit breaker active• CB determines current• CB determines TIV• Needs MW to test

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HVDC circuit breaker topologies



HVDC circuit breaker test requirements

• Dielectric testing• Between terminals• Support structure

• Operational testing• Loss / resistance measurement• Temperature rise• Current withstand

• Current interruption testing• Breaking• Re-closing

• Special• Current limiting

Standard test circuits

Non-standard test circuits

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Implementation with mechanical circuit breaker with activecurrent injection

Frequency: 16.7 HzInterrupting current: ±2 kA - ±16 kABreaker operation time: 8 msVoltage rating: 72.5 kV / 108 kVEnergy dissipation: 1 - 4 MJ

・VI: Vacuum Interrupter・HSMS: High Speed Making Switch・Cp: Capacitor・Lp: Reactor



Achievements

HV and makingvacuum interrupter

switch

Counter currentinjection capacitors

Reactors

Energyabsorbing MOSA

Triggered making gap

Auxiliary SF6

AC CB

DCCB Control Panel

Laboratories

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Hybrid HVDC Breaker (HHB)Design alternatives to meet technical requirements

HVDCBreaker

VSC converter

X~

Current LimitingReactor

Load Commutation Switch

Main Breaker

Ultrafast Disconnector

Hybrid HVDC Breaker

ResidualDC Current

Breaker

Current LimitingReactor

Semiconductor HVDC Breaker

ResidualDC Current

Breaker

Hybrid HVDC breaker

Semiconductor HVDC breaker

Time Loss Scalable

Hybrid OK Very Low OK

Semiconductor Very fast Medium OK



HHB Basic functionality

Normal operation: Currentflows in low-loss main branchProactive control: Loadcommutation switchcommutates current into MainBreaker, the Ultra-FastDisconnector opens with verylow voltage stressFault clearance: Main Breakerswitch commutates faultcurrent into arrester bank

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HHB Breaking timeline

IUFD

Fault

Loadcommutationswitch opens

UDC

Iarrester

Mainbreakeropens

Faultclearance

Imain breaker

UFDopens

t

i



Firts test results

-2,00E+00

0,00E+00

2,00E+00

4,00E+00

6,00E+00

8,00E+00

1,00E+01

1,20E+01

1,40E+01

-2,00E+01

0,00E+00

2,00E+01

4,00E+01

6,00E+01

8,00E+01

1,00E+02

1,20E+02

1,40E+02

Tim

e…1,

02E-

021,

04E-

021,

05E-

021,

06E-

021,

08E-

021,

09E-

021,

11E-

021,

12E-

021,

13E-

021,

15E-

021,

16E-

021,

17E-

021,

19E-

021,

20E-

021,

21E-

021,

23E-

021,

24E-

021,

26E-

021,

27E-

021,

28E-

021,

30E-

021,

31E-

021,

32E-

021,

34E-

021,

35E-

021,

36E-

021,

38E-

021,

39E-

021,

41E-

021,

42E-

021,

43E-

021,

45E-

021,

46E-

021,

47E-

021,

49E-

021,

50E-

021,

51E-

021,

53E-

021,

54E-

021,

56E-

021,

57E-

021,

58E-

021,

60E-

021,

61E-

021,

62E-

021,

64E-

021,

65E-

021,

66E-

021,

68E-

021,

69E-

021,

71E-

021,

72E-

021,

73E-

021,

75E-

021,

76E-

021,

77E-

021,

79E-

021,

80E-

021,

81E-

021,

83E-

021,

84E-

02

v_MB(+)(kV)

i_MB(kA)

Ignite spark gapOpen UFD

Open Load Commutation switchOpen Main breaker

Fault current energy dissipated in arresters

1 ms

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HVDC GIS


PROMOTioN – HVDC GIS

HVAC / HVDC GIS Advantages

A DC-GIS installation can be built with amuch higher degree of compactness andsignificantly lower sensitivity to ambientfactors than with air-insulated switchgear(AIS).The most obvious cost-saving potential canbe found on off-shore converter platformswhere the required air-clearance for AISleads to much larger and heavier off-shorestructures.By using DC-GIS, the volumetric space ofthe switchgear installation can bedrastically reduced e.g. by 70%- 90%.

HVDC GIS

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HVDC GIS Components

The HVDC-GIS technology spans a numberof switchgear components, e.g.:• Bus-ducts and high voltage DC

conductors• Disconnect- and earthing switches• Bushings and cable terminations• Current- and voltage measurement

sensors• Surge arresters

HVDC GIS



Work package organisation

WP15 – HVDC GIS technology demonstrator

Task 15.3Long term testing of the DC GIS

equipment

Task 15.3Long term testing of the DC GIS

equipment

Task 15.1Defining specifications and long

term testing requirements

Task 15.1Defining specifications and long

term testing requirements

Task 15.2Develop monitoring anddiagnostic method and

applicability of SF6alternatives

Task 15.2Develop monitoring anddiagnostic method and

applicability of SF6alternatives

Task 15.4Initiation of standardization activities for HVDC GIS design,

testing and application

Task 15.4Initiation of standardization activities for HVDC GIS design,

testing and applicationWP11WP11

WP1WP1

WP4WP4

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HVDC gas insulated system technology demonstrator[mm] E Field [1][s]

DCAC

1R

2R

dtUdC

RUI )(

+=see

t rRC 0==

1

2

2

1C

C

U

U=

2

1

2

1R

R

U

U=

)DC"("¥®t)AC"("0=t

U

I

2C2U

1U 1C

U = 330 kV



HVDC GIS - Verification Test for Insulators

99 %95 %90 %

Ambient Temperature 40°C


0

0.2

0.4

0.6

0.8

1

1.2

0 5 10 15 20 25 30

DCfie

ld[%

]

time [d]

outer topouter sideouter bottominner bottom

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99 %95 %90 %



0

0.2

0.4

0.6

0.8

1

1.2

0 5 10 15 20 25 30

DCfie

ld[%

]

time [d]

outer topouter sideouter bottominner bottom




0.1 1 10 100 1000

Surfa

cepo

tent

iald

iffer

ence

DU

time [h]

Measurementq = -90°q = -60°q = -30°q = 0°q = 30°

4 kV

Modeling

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HVDC GIS - DemonstratorInsulation system test Prequalification test



HVDC GIS demonstrator – Set-up

Bushing

Connection optionfor a second bushingDisconnector

and earthing switchRC divider

Zero flux sensor

Busbar and connecting elements

Heating transformers

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HVDC GIS demonstrator – Test valuesDemonstrator Value Unit

Pre-TestsThermal calibration, Commissioning tests, PD, LI, SI

Long-term test cycles with DC ± 1.0 …1.2HL (AC equivalent) pu

Rated superimposed LI / SI withstand voltage ± 0.8 pu

Long-term test cycles with DC ± 1.0 …1.2ZL pu

Rated superimposed LI / SI withstand voltage ± 0.8 pu

Final verification tests & additional tests



HVDC GIS demonstrator - DiagnosticMonitoringPD-Monitoring UHF / Optics

SF6 density / pressure monitoring system

Temperature monitoring system enclosure

Heat current monitoring system

Voltage (RC) / Current (ZF)

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Kick-off – WP15


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COPYRIGHTPROMOTioN – Progress on Meshed HVDC Offshore Transmission NetworksMAIL [email protected] WEB www.promotion-offshore.net

The opinions in this presentation are those of the author and do not commit in any way theEuropean Commission

PROJECT COORDINATORDNV GL Netherlands B.V.Utrechtseweg 310, 6812 AR Arnhem, The NetherlandsTel +31 26 3 56 9111Web www.dnvgl.com/energy

CONTACT

PARTNERSDNV GL Netherlands B.V., ABB AB, KU Leuven, KTH Royal Institute ofTechnology, EirGrid plc, SuperGrid Institute, Deutsche WindGuard GmbH,Mitsubishi Electric Europe B.V., Affärsverket Svenska kraftnät, Alstom Grid UKLtd (Trading as GE Grid Solutions), University of Aberdeen, Réseau de Transportd‘Électricité, Technische Universiteit Delft, Statoil ASA, TenneT TSO B.V.,Stiftung OFFSHORE-WINDENERGIE, Siemens AG, Danmarks TekniskeUniversitet, Rheinisch-Westfälische Technische Hochschule Aachen, UniversitatPolitècnica de València, SCiBreak AB, Forschungsgemeinschaft für. ElektrischeAnlagen und Stromwirtschaft e.V., Ørsted Wind Power A/S, The Carbon Trust,Tractebel Engineering S.A., European University Institute, Iberdrola RenovablesEnergía, S.A., European Association of the Electricity Transmission & DistributionEquipment and Services Industry, University of Strathclyde, ADWEN Offshore,S.L., Prysmian, Rijksuniversiteit Groningen, MHI Vestas Offshore Wind AS,Energinet.dk, Scottish Hydro Electric Transmission plc, SCiBreak AB

APPENDIX

DISCLAIMER & PARTNERS


Uwe RiechertDr.-Ing.

ABB Switzerland Ltd, PGHV-TST, Elias-Canetti-Strasse 7, 8050, Zurich, ZH, SWITZERLANDTel +41 58 588 32 04Email [email protected]

performance demonstration of hvdc substation equipment ... · hvdc network control mmc test bench...

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