Super Grids with UHV DC – Challenges and Solutions for ... · Super Grids with UHV DC –...
Transcript of Super Grids with UHV DC – Challenges and Solutions for ... · Super Grids with UHV DC –...
1 08-2011 Power Transmission SolutionsE T PS S/Re1 08-2011 E T PS S/Re
Volker Hild Dietmar Retzmann
Power Transmission Solutions
Super Grids with UHV DC – Challenges and Solutions for Bulk Power Transmission
2011
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CO2 Reduction – Green EnergyMegacities – Security of Supply
ocus on
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Prospects of Grid Developments:
08-2011
“Micro Grid” “Smart Grid”
Generation
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Virtual Power Plant
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“Super Grid”
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Bulk Power AC/DCEnergy HighwayE T PS S/Re3 E T PS S/Re08-2011
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S System Interconnection
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olutions for
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Grid Extension and
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2010
P = 400 MWQ = +/- 170-300 MVAr Dynamic Voltage Support
Elimination of Transmission Bottlenecks
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Transmission Constraints before TBC
Transmission Constraints after TBC
No Increase inShort-Circuit Power
Power Exchangeby Sea Cable
No Increase inShort-Circuit PowerNo Increase inShort-Circuit Power
Power Exchangeby Sea CablePower Exchangeby Sea Cable
HVDC PLUS: Trans Bay Cable Project, USASecurity of Supply for San Francisco Area
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HVDC PLUS: Trans Bay Cable Project, USA
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Energy Project of the Year – American Society of Civil Engineers, Region 9; Sacramento, 9th March 2011Energy Project of the Year – American Society of Civil Engineers, Region 9; Sacramento, 9th March 2011
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No Increase inShort-Circuit Power
Benefits of HVDC – in Eastern and Western-Europe …
Customer:RTE and REE
Sharing ofReserve Capacity
Power Exchange &
Customer:Energotrans Ltd.
System Data:Rating 2 x 350 MWVoltage 96 kV DCThyristor 8 kV LTT
Black Sea B2B 2013
2013
INELFE
World’s 1st VSC HVDCwith 2 x 1,000 MW –each @ VDC = +/- 320 kVCable: XLPE, 65 km
Increase in Stability
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… and in USA: HVDC B2B close to New York
Customer:Hudson Transmission Partners LLC.
.System Data:Rating 660 MWVoltage 170 kV DCThyristor 8 kV LTT
2013
Hudson Transmission ProjectRidgefield (New Jersey), USA
No Increase inShort-Circuit Power
Sharing ofReserve Capacity
Power Exchange &
Increase in Stability
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From West to East – Benefits of HVDC
Bangladesh B2B
Customer:AltaLinkSystem Data:Rating 1,000 MWVoltage 500 kV DCThyristor 8 kV LTTOHL 400 km
WATL – Western AlbertaTransmission Link
2013Customer:Power Grid Company of Bangladesh Ltd.
System Data:Rating 500 MWVoltage 158 kV DCThyristor 8 kV LTT
Customer:ATCOSystem Data:Rating 1,000 MWVoltage 500 kV DCThyristor 8 kV LTTOHL 500 km
Sunnybrook
Crossings
Heathfield
Newell
2014 East DC Link Project
2014
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Yunnan-Guangdong
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World’s first 800 kV HVDC – 5,000 MW
More Powerout of the Grid …
plus CO2 Reduction
In China Southern Power Grid
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2 x 800 kV UHV DC in China Southern Power Grid
+/- 800 kV DC
World’s first 800 kV Bulk Power UHV DC Transmission SystemYunnan-Guangdong5,000 MW 1,418 km
Commercial OperationYunnan-Guangdong: Dec. 2009 – Pole 1 June 2010 – Pole 2
Reduction in CO2 versus local Power Supply with Energy Mix
2 x 33 m tons p.a. – by using Hydro Power and HVDC for Transmission
Return to Sustainability
Nuozhadu-Guangdong1,451 km5,000 MW 2013: +/- 800 kV
2012: +/- 400 kV
2 x +/- 800 kV DC
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Single-Line Diagram of Yunnan-Guangdong HVDC System
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Yunnan-Guangdong – from ‘3D Models’ …
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World’s first 800 kV UHV DC – 5,000 MW
2009/2010
… to Reality: Sending Station Chuxiong
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Example of HVDC “Bulk”
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Thorough Testing is essential …
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TU Graz
FGH MannheimHSP Cologne
TU Munich
TU Dresden
PSW Berlin
IPH Berlin
KIT Karlsruhe
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Examples of UHV DC Bushing, DC Arrestor and Voltage Divider
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800 kV DC
9 m
12.8 m
Power Transmission Solutions
10.6 m
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DC (2 hrs) 1,175 kVAC (1 min) 1,020 kVPR (90/90/45 min) 935 kVSI 1,790 kVLI (FW/CW) 2,080/2,320 kV
48** Transformers – for the Yunnan-Guangdong UHV DC Project
Test Voltages
** plus 8 Spare Units
800 kV HVDC Transformers under Construction250/244 MVA Single-Phase* Transformers
* for Transportation Reasons
Core Design: 3 Limbs & 2 Return LimbsL x W x H: 26 x 6.4 x 15.2 mTotal Weight: 512 tons
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Yunnan-Guangdong – HVDC Transformer Data
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A long Way: Transportation of Transformers –from Germany, Transformer Factory, to China
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UHV DC Transformers: welcome to the City
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UHV DC Substation – coming closer
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Yunnan-Guangdong: UHV DC – ‘Welcome’
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UHV DC Transformers – ready to ‘enter’the Valve Hall
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Yunnan-Guangdong – UHV DC Valve Hall
800 kV DC
AC Side
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Yunnan-Guangdong – UHV DC Valve Hall
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800 kV DC
DC Side
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UHV DC – Sending Station: from indoor to outdoor
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800 kV DC
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Top View: Transformer Bushings & Valve Towers
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800 kV DC
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Yunnan-Guangdong – 800 kV DC Line
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800 kV DC Overhead Line
Welcome great Outdoors !
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Yunnan-Guangdong: UHV DC – Inauguration Pole 2World‘s highest bipolar DC Power * ever trans-mitted – with 4 Valve Groups, 2010, June 18
* 4,000 MW
* More Hydro Powerwas not available …at that Time
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Yunnan-Guangdong: full Power Transfer 5,000 MW
= 1,600 kV
=Full Hydro Poweris now available …
2,502 MW
+ +
800 kV
800 kV
2,499 MW
2011, April 04
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HVDC “Bulk” – Overload Characteristics
Continuous overload at Chuxiong side
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Note: max. ambient temperature is 34.2°C in Chuxiong
Two hour overload at Chuxiong side
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Example of UHV DCYunnan-Guangdong, China (5,000 MW *)
* Chuxiong: Sending Station
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HVDC “Bulk” – Overload Characteristics
Note: max. ambient temperature is 34.2°C in Chuxiong
Transient Overload at Chuxiong side with and without redundant cooling
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Transient Overload (starting from two-hour Overload)
Very high Overload Capacity = Security of Power Supply !
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Yunnan-Guangdong – UHV DC completed
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Xiangjiaba-ShanghaiWorld’s biggest and longest 800 kV HVDC
08-2011
More Powerout of the Grid …
plus CO2 Reduction
Fulong Converter Station – HVDC Transformers & Thyristor Valves with new 6-inch Thyristors
In Co-Operation with
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Xiluodu-Zhexi 1728km
Zhexi
Xiluodu rightXiluodu right
Nanhui
XiangjiabaXiangjiaba
Sichuan Power Grid
Xiluodu-Zhuzhou 970kmZhuzhou
Xiluodu leftXiluoduleft
Wuhan
Guangdong
LeshanChongqing
Changsha
Shanghai
6,400 MW+/- 800 kV DC
2,071 km Commercial Operation: July 2010 – both Poles
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Reduction in CO2 versus local Power Supply with Energy Mix
41 m tons p.a. – by using Hydro Power and HVDC for Transmission
World’s biggest and longest 800 kV UHV DCSystem in Operation – State Grid Corporation of China
Xiangjiaba-ShanghaiFulong – World’s biggest HVDC Converter Station in Operation: Transformers & Thyristor Valves with new 6-inch Thyristors from Siemens
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Schematic Arrangement of Xiangjiaba-Shanghai Converters
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Thyristor Modular Unit for Fulong Converter Station
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Design of Thyristor Valves for Fulong Station:Latest Development of Power Thyristors: 6“-ETT
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DC Current Capability ofmore than 4,500 A Optimum Blocking Voltage
of 8.5 kV Joining of the Silicon Pellet
to a Molybdenum Carrier Diskusing low-Temperature high-Pressure Sintering Excellent thermal Coupling Low thermal Resistance Outstanding Short-Circuit
Current Capability: > 80 kA High Reliability, Failure Rate < 10 fit
6“ high-Power Thyristor – compared with 4“ and 5“ Elements
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Arrangement of 800 kV Converters for Fulong Station
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Two HV and two LVValve Towers for Fulong Converter Station during Erection for thedielectric Type Testsin Xihari HV Test Fieldin Xi‘an, China(Arresters not yet connected)
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Conclusions:Prospects of Smart and Bulk PowerTransmission Technologies
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Sunan
To Sichuan Power GridJinping Plant I
GuandiLinping
Jinping Plant I I
Xichang
Wuhan
Guangdong
LeshanChongqing
Changsha
Shanghai
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* 7,200 MW+/- 800 kV DC
2013
* 6.4 GW initially
2,095 km
+/- 800 kV DC
For Comparison: Germany
World’s biggest and longest 800 kV UHV DCProject: Jinping – State Grid Corporation of China
RWE amprion
Elia 50hertz
TenneTtranspower
EnBWTransport-netze
840 km
Yulong – World’s biggest HVDC Converter Station*: Thyristor Valves with new 6-inch Thyristors from Siemens
Jinping-Sunan
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World’s biggest 500 kV HVDC Transmission Project: 2 Systems in parallel – China Southern Power Grid
6,400 MW2 x +/- 500 kV DC
1,268 km
Xiluodo-Guangdong
Reduction in CO2 similar Benefits as in UHV DC Projects
Zhaotong – World’s biggest 500 kV Converter Station: 2 x 3,200 MW with Thyristor Valves from Siemens
2013
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Connecting:Wind Power Hydro Plants Solar Fields
08-201144
The Vision: DC Energy Highway –why not in Europe too ?
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FOSG*
Desertec
Medgrid
* Friends of the Supergrid
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The Future ? Global Link for Green Energywith HVDC – including DESERTEC & SEATEC
5-10 GW DCs in China
Thank You for Your Attention !