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HVDC Projects and Activities
Joerg Dorn, joerg.dorn@siemens.comPower Transmission and Distribution
IEEE PES General MeetingTampa - June, 27th 2007
2 26.06.2007 Power Transmission and DistributionJ. Dorn, PTD H 1T6
Neptune, USA, 2007
105 kmTransmission
dist.
Long distance
Sea Cable
Type of plant
Direct-light-triggered 8 kVThyristor voltage
500 kV DC, 230/345 kV,60 Hz
Voltage levels
660 MW, monopolarPower rating
New Jersey/New York
Long Island
Location
NeptuneProject name
Neptune RTSCustomer
3 26.06.2007 Power Transmission and DistributionJ. Dorn, PTD H 1T6
Ballia - Bhiwadi, India, 2009
800 kmTransmission
distance
Long distance
transmission
Type of plant
3600Number of
thyristors
Direct-light-triggered, 8 kVThyristor voltage
500 kV DC, 400 kV, 50 HzVoltage levels
2500 MW, bipolarPower rating
Uttar Pradesh province to
Rajasthan province
Location
Ballia-BhiwadiProject name
Powergrid Corporation of India
Ltd.
Customer
Delhi
Ballia
Bhiwadi
Delhi
Ballia
Bhiwadi
4 26.06.2007 Power Transmission and DistributionJ. Dorn, PTD H 1T6
Storebælt, Denmark, 2010
56 kmTransmission
distance
Submarine cable
transmission
Type of plant
1440Number of
thyristors
Direct-light-triggered, 8 kVThyristor voltage
400 kV DC, 400 kV, 50 HzVoltage levels
600 MW, monopolarPower rating
The islands Funen (Fyn) and
Zealand (Sjælland) in Denmark
Location
StorebæltProject name
Energinet.dkCustomer
5 26.06.2007 Power Transmission and DistributionJ. Dorn, PTD H 1T6
BritNed, UK – Netherlands, 2010*
Approximately 200 kmTransmission
distance
Submarine cable transmissionType of plant
3360Number of thyristors
Direct-light-triggered, 8 kVThyristor voltage
450 kV DC, 400 kV, 50 HzVoltage levels
1000 MW, monopolarPower rating
Isle of Grain on the southern bank
of the Thames Estuary in UK and
Maasvlakte west of Rotterdam in
the Netherlands
Location
BritNedProject name
BritNed Development Ltd. Customer
*Subject noticed to proceed
6 26.06.2007 Power Transmission and DistributionJ. Dorn, PTD H 1T6
Yunnan - Guangdong, China, 2010
1418 kmTransmission
distance
Long distance transmissionType of plant
5760Number of
thyristors
Direct-light-triggered, 8 kVThyristor voltage
800 kV DC, 525 kV, 50 HzVoltage levels
5000 MW, bipolarPower rating
Province Yunnan to province
Guangdong
Location
Yunnan-Guangdong ±800kV
UHVDC Transmission Project
Project name
China Southern Power Grid Co.,
Ltd.
Customer
7 26.06.2007 Power Transmission and DistributionJ. Dorn, PTD H 1T6
UHVDC Bushing at Test Lab TU Graz – Austria
800 kV DC Bushing in Test Field
8 26.06.2007 Power Transmission and DistributionJ. Dorn, PTD H 1T6
DC Reactor Testing
800 kV DC3,125 A75 mH28 tons !
9 26.06.2007 Power Transmission and DistributionJ. Dorn, PTD H 1T6
“Snapshots” from DC Valve Tower Testing
Dielectric Testing of Valve-Support Structure
10 26.06.2007 Power Transmission and DistributionJ. Dorn, PTD H 1T6
Power Quality for AC & DC Systems
Power Transmission and Distribution10
HVDCHVDCwithwith VSCVSC --
HVDCHVDC PLUSPLUS
11 26.06.2007 Power Transmission and DistributionJ. Dorn, PTD H 1T6
HVDC PLUS DevelopmentThe Modular Multilevel Converter - MMC
Low generation of harmonics
Low HF noise
Low switching losses
12 26.06.2007 Power Transmission and DistributionJ. Dorn, PTD H 1T6
Submodule Control
Phase UnitSubmodule
PLUSCONTROL
13 26.06.2007 Power Transmission and DistributionJ. Dorn, PTD H 1T6
Voltage generation
AC and DC voltages controlled by converter leg voltages:
+Ud/2
-Ud/2
Uac
Uac
14 26.06.2007 Power Transmission and DistributionJ. Dorn, PTD H 1T6
Two-level and Multilevel-Technology
)
Desired voltage Realized voltage
- Vd /2
0
+Vd /2
High harmonic DistortionHigh Stresses resulting in HF Noise
Low Generation of Harmonics
Low HF Noise
Low Switching Losses
Two-level technology Multilevel technology
15 26.06.2007 Power Transmission and DistributionJ. Dorn, PTD H 1T6
Steady-state simulations of MMC
PLOTS : Graphs
1.000 1.010 1.020
-250 -200 -150 -100 -50
0 50
100 150 200 250
U [k
V]+Ud -Ud US1 US2 US3
-2.00
-1.50
-1.00
-0.50
0.00
0.50
1.00
1.50
2.00
I [kA
]
is1 is2 is3
-1.50
-1.25
-1.00
-0.75
-0.50
-0.25
0.00
0.25
0.50
0.75
I [kA
]
i1p i2p i3p i1n i2n i3n
AC and DC terminal voltages
AC currents
Converter Phase Leg currents
16 26.06.2007 Power Transmission and DistributionJ. Dorn, PTD H 1T6
HVDC PLUS – The Smart Way
Compact Modular Design
Less Space Requirements
Advanced VSC Technology
DC cable transmission
DC overhead line transmission
Back-to-Back systems
Multi-terminal systems
STATCOM operation
17 26.06.2007 Power Transmission and DistributionJ. Dorn, PTD H 1T6
Thank you very much for your attention
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