brief on hvdc 2015 nowadays, the global projects and researches in hvdc are very actively planned...
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Brief on HVDC 2015
• Nowadays, the global projects and researches in HVDC are very actively planned and launched especially in EU, China, India and Brazil. • Promoting the current technical and policy making issues, a lot of discussion and technical meetings for HVDC have been challenged for the new perspective in HVDC world. • However, three main topics such as HVDC Application in Power Grid, HVDC Converter Station and Power Equipments for HVDC System are discussed separately in one way or another. • Therefore, we have been spending the enormous efforts to grasp the total strategic solutions and technical information on HVDC projects. • In this context, HVDC 2015 has been organized to provide the collective strategic and technical information for the policy making staffs as well as technical engineers in the major three topics - Power Grid, Converter and Power Equipments – and further to take the initial step for Super Grid in North East Asia (China-Korea-Japan-Russia).
Brief on HVDC 2015
Main and Sub Topics of HVDC 2015
I. HVDC Application on Power Grid 1) Analysis of AC/DC Power System 2) Planning and Operation of HVDCs in Transmission Networks 3) HVDCs for Renewable Power and Micro Grid 4) Application of DC Innovative Technology: DC Grid and DC Distribution 5) Experience from Practical HVDC Application 6) Other HVDC Power Grid Related Topics
II. HVDC Converter Station 1) Novel Technology of VSC and CSC for HVDC Transmission 2) Network Topology of HVDC Converters for Off-shore Wind Farm Power Plant 3) Construction and Operation Aspects on HVDC Converter Station 4) Novel Circuit Topology and Control Circuit for HVDC Converter Operation 5) Universal Transformer for DC Distribution Networks 6) Other HVDC Converter Related Topics
III. Power Equipments for HVDC System 1) HVDC Converter Transformer 2) AC/DC Filter and Reactive Power Compensating Equipments for HVDC System 3) HVDC GIS and Circuit Breaker 4) HVDC Series Reactor and Parallel Capacitor 5) HVDC Transmission Line (Overhead, Underground and Submarine Cable) 6) HVDC Insulation Coordination 7) Other HVDC related Equipments (HVDC Lightning Arrester, Insulator and so forth ....)
Main and Sub Topics of HVDC 2015
IV. Promotion Status and Future Plans of the North-East Asia Super Grid 1) Promotion Status and prospect s of Super Grid business in Europe 2) Super Grid Operation Experience between European Nations 3) Outline and Benefits of Super Grid 4) Prospects of Super Grid Market Volume 5) Status of the North-East Asia Super Grid 6) Technical Feasibility of Super Grid business in the North-East Asia 7) Economic/Legal Analysis of Super Grid business in the North-East Asia 8) Plan for Establishing the North- East Super Grid of KEPCO
Current Status of Power System in Korea
Generation
• Capacity: 82,527MW
• GENCO(Subsidiaries)
: 69,187MW(84%)
Generation Source
Transmission &Distribution
• Transmission: 31,662c-
km
• Substation: 264,373MVA
Line Length(c-km)
Sales
• Customers: 20 million
• Sales Volume:
466,592GWh
Sales PercentageNuclearGasCoalOilOthers
25.1%
28.3%29.1%
6.1%11.6%
• Other include renewable energy (About 1.7%)
765kV
345kV
Below154kV
835
8,770
22,017
Residential(14%)
Public & Service (30.7%)
Industrial (55.3%)
Transmission & Distribution Facilities
Line Length 31,663 c-km
Include HVDC(DC180kV) submarine cable of 231c-km
Transmission
Line Length 442,641 c-km
Distribution
Voltage
No. of S/S [T]
No. of P.tr [D]
Capacity[MVA]
T
765kV 6 29,116
345kV 91 111,597
154kV 644 123,226
66kV 8 434
Total 749 264,373
D 22.9kV(P.tr)
2,005,113102,582
(As of Dec 31, 2012)
High Capacity HVDC Application
Needs for High Capacity HVDC
The level of fault current in metropolitan area is increased up to the limit.
HVDC could increase power system stability
Power system operation aspect
765kV AC T/L Long construction period (severe public complaints)
Lower land cost for HVDC T/L than one of HVAC
Mitigate the issue of T/L construction
Difficulty of 765kV AC line construction
Jeju Island HVDC
Isolated network
2.5 times of mainland’s cost
High Generating Cost
• One of the most popular tourist place
• Over 10% growth/year for last 20 years
Continuously Increasing Power Demand
Project Capacity Status
#1 HVDC 300MW Existing
#2 HVDC 400MW Existing
#3 HVDC 200MWPlan Confirmed
(Completion 2017)
#3
Needs for HVDC in Jeju
HVDC Construction Plan (Confirmed)
• 1st and 2nd Stage : 345kV AC (2011~2016)
- 345kV transmission line 22km, 500MW
• 3rd Stage : 500kV HVDC (2017~2019)
- Two PtP converter station(2GW) : Offshore, Land
- Overhead and Cable Transmission Line 80km, 2GW
Off shore Wind Farms Connection
• Objective : Increase transmission capacity,
reduce fault current
• Installed facilities : PtP converter station(1.5GW x 2)
• Completion : June. 2018(1st), June. 2021(2nd)
Pyeongtaek -Dangjin PtP HVDC
Possible HVDC Application in Korea
BTB type
• Frequency Converter
• Separation of AC networks
3 to 4 Projects for the Seoul Area and
South-North Korea connection
PTP type 1
• Long Distance Power Transmission
2 to 5 Projects for the replacement of
AC 765kV and 345kV
PTP type 2
• Submarine cable Transmission
2 to 3 Projects for the Jeju and
Mainland connection
3 Projects between Korea and Russia,
Japan, China
• BTB: Back to Back (Frequency Conversion)• PTP: Point to Point (Long Distance T/L)
Super Grid in North East Asia (China-Korea-Japan-Russia)
HVDC
Wind
Power Plant
Customer
China
Korea
Japan
Russia
North Korea