Operational Planning of Electric Power System with Multi-terminal - - PowerPoint PPT Presentation

▶
operational planning of electric power system with multi
SMART_READER_LITE
LIVE PREVIEW

Operational Planning of Electric Power System with Multi-terminal - - PowerPoint PPT Presentation

Dec 05, 2023 806 likes •935 views

Electric Power Engineering Operational Planning of Electric Power System with Multi-terminal VSC-HVDC Ph.D. student: Wang Feng Supervisor and Examiner: Prof. Lina Bertling Co-supervisor: Tuan Le (Chalmers) Anders Mannikoff (SP) Anders

slide-1
SLIDE 1

Electric Power Engineering

Operational Planning of Electric Power System with Multi-terminal VSC-HVDC

Ph.D. student: Wang Feng Supervisor and Examiner: Prof. Lina Bertling Co-supervisor: Tuan Le (Chalmers) Anders Mannikoff (SP) Anders Bergman (SP)

Financial support: Chalmers Energy Initiative (CEI) Partners: Chalmers University of technology, SP Technical Research Institute of Sweden 2011-12-02 Chalmers Energy Initiative

slide-2
SLIDE 2
  • F. Wang
  • Dec. 02, 2011

1

Operational Planning of Electric Power System with Multi-terminal VSC-HVDC Electric Power Engineering

Outline

  • State-of-the-art of VSC-HVDC

– VSC Topologies – Modeling and Control

  • Project examples
  • Potential applications
  • Summary from literature review
  • Example results
  • Further work
slide-3
SLIDE 3
  • F. Wang
  • Dec. 02, 2011

2

Operational Planning of Electric Power System with Multi-terminal VSC-HVDC Electric Power Engineering

Two level Converter Neutral Point Clamped (NPC) three level converter * Modular Multilevel Converter (MMC) ** Half Bridge * A. Nabae, I. Takahashi, and H. Akagi, "A New Neutral-Point- Clamped PWM Inverter," Industry Applications, IEEE Transactions

  • n, vol. IA-17, pp. 518-523, 1981.

** R. Marquardt, "Modular Multilevel Converter: An universal concept for HVDC-Networks and extended DC-Bus-applications," in Power Electronics Conference (IPEC), 2010 International, 2010.

Two Level Converter

State-of-the-art of VSC HVDC:

VSC Topologies

Multi Level Converter MMC (Half Bridge) MMC (Full Bridge)

Full Bridge

slide-4
SLIDE 4
  • F. Wang
  • Dec. 02, 2011

3

Operational Planning of Electric Power System with Multi-terminal VSC-HVDC Electric Power Engineering

Linear PI controller in synchronous frame P+Resonant controller in stationary frame * Power-Synchronization controller in synchronous frame **

State-of-the-art of VSC HVDC:

Modeling and Control

* R. Teodorescu, F. Blaabjerg, M. Liserre, and P. C. Loh, "Proportional-resonant controllers and filters for grid- connected voltage-source converters," Electric Power Applications, IEE Proceedings -, vol. 153, pp. 750-762, 2006. ** Z. Lidong, L. Harnefors, and H. P. Nee, "Interconnection of Two Very Weak AC Systems by VSC-HVDC Links Using Power-Synchronization Control," Power Systems, IEEE Transactions on, vol. 26, pp. 344-355, 2011.

slide-5
SLIDE 5
  • F. Wang
  • Dec. 02, 2011

4

Operational Planning of Electric Power System with Multi-terminal VSC-HVDC Electric Power Engineering

http://www.automation.com http://www.siemens.com http://www.svk.se

Example Projects

Project Name Caprivi Link, Namibia Year of Commissioning 2009 Power Rating 300 MW DC Voltage 350 kV Remarkable: Connection two weak system via long

  • verhead lines

Project Name Trans Bay Cable, USA Year of Commissioning 2010 Power Rating 400 MW, ±170 MVAr DC Voltage ±200 kV Remarkable: The first project using MMC Project Name South West link, Sweden/Norway Year of Commissioning South part 2014 West part 2016 (Scheduled) Power Rating South part: 2×600 MW DC Voltage ±300 kV Remarkable: The first multi-terminal VSC HVDC system

slide-6
SLIDE 6
  • F. Wang
  • Dec. 02, 2011

5

Operational Planning of Electric Power System with Multi-terminal VSC-HVDC Electric Power Engineering

  • 1. R. da Silva, R. Teodorescu, and P. Rodriguez, "Power

delivery in multiterminal VSC-HVDC transmission system for offshore wind power applications" (in Proc. Innovative Smart Grid Technologies Conference Europe (ISGT Europe), 2010 IEEE PES, 2010, pages. 1-8)

Potential Applications

  • Multi-terminal VSC-HVDC
  • Hybrid System of CSC and

VSC

  • Segmentation of AC Grid
  • Meshed DC grid

Integration of Wind farms using Multi-termianl VSC-HVDC 1 Supplying power to urban load center using Multi-termianl VSC-HVDC 2 Hybrid application of CSC and VSC-HVDC 3 Segmentation of ac grid using VSC-HVDC 4

  • 2. X. Lie, B. W. Williams, and Y. Liangzhong, "Multi-

terminal DC transmission systems for connecting large

  • ffshore wind farms" (in Proc. Power and Energy Society

General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century, 2008 IEEE, 2008, pages. 1-7).

  • 3. B. R. Andersen and X. Lie, "Hybrid HVDC system for

power transmission to island networks" (in Proc. Transmission and Distribution Conference and Exposition, 2003 IEEE PES, 2003, pages. 55-60 Vol.1).

  • 4. H. Clark, A. A. Edris, M. El-Gasseir, K. Epp, A. Isaacs,

and D. Woodford, "Softening the Blow of Disturbances" (Power and Energy Magazine, IEEE, vol. 6, 2008, pages 30-41).

slide-7
SLIDE 7
  • F. Wang
  • Dec. 02, 2011

6

Operational Planning of Electric Power System with Multi-terminal VSC-HVDC Electric Power Engineering

The most important aspects concerning this technology include:

  • Applications of MMC in HVDC
  • New modelling and control methods of VSC
  • Future applications of VSC will be multi-terminal VSC HVDC

and/or DC grid

  • Research studies on operations of mixed DC and AC grid at

the system level will be more demanding.

Summary from Literature Review

slide-8
SLIDE 8
  • F. Wang
  • Dec. 02, 2011

7

Operational Planning of Electric Power System with Multi-terminal VSC-HVDC Electric Power Engineering

Example Results

VSC2 VSC1 VSC3 0.0291 ohm/km X 200 km 5.82 [ohm] 5.82 [ohm] 0.0291 ohm/km X 100 km 2.91 [ohm] 2.91 [ohm] V F Ph 0.0001 [H] P = -301.4 Q = -0.06018 V = 367.3 V A P = -328.2 Q = -0.0599 V = 367.3 V A V F Ph 0.0001 [H] P = 600 Q = -0.03626 V = 367.3 V A V F Ph 0.0001 [H]

VS C 1 : C

  • ntrols

S 1_U dcfil 599.989 S 1_P dc 296.333 VS C 2 : C

  • ntrols

S 2_U dcfil 594.573 S 2_P dc 323.071 VS C 3 : C

  • ntrols

S 3 U dcfil 588.539 S 3 P dc

  • 609.395

VS C 1 : C

  • ntrols
700
  • 700

S 1 P ref

700
  • 700

S 1 Q ref

700
  • 700

S 1 U dcref 600 M ain : AC source

450

S 1 S v 367 kV

90
  • 90

S 1 S ph Degree

55 45

S 1 S f 50 Hz VS C ... S 1 U dc/P C trl 1

P Udc

Three-terminal VSC-HVDC model (preliminary) in PSCAD/EMTDC

slide-9
SLIDE 9
  • F. Wang
  • Dec. 02, 2011

8

Operational Planning of Electric Power System with Multi-terminal VSC-HVDC Electric Power Engineering

Further work

  • Steady state study
  • Joint AC and DC load flow calculation
  • Optimal operation study in steady state condition
  • Dynamic study
  • VSC model simplification for dynamic studies in the system level
  • Multi-terminal VSC-HVDC system development using simplified

VSC model in the system dynamic study platform

  • Interaction study between AC and DC system
slide-10
SLIDE 10
  • F. Wang
  • Dec. 02, 2011

9

Operational Planning of Electric Power System with Multi-terminal VSC-HVDC Electric Power Engineering

Questions or comments?

Thank Thank you you ! !

slide-11
SLIDE 11
  • F. Wang
  • Dec. 02, 2011

10

Operational Planning of Electric Power System with Multi-terminal VSC-HVDC Electric Power Engineering

Wang Feng

Electric Power Engineering Energy and Environment Department Chalmers University of Technology SE-412 96 Gothenburg, Sweden +46 73 658 6258

feng.wang@chalmers.se

http://www.chalmers.se http://www.chalmers.se/ee/EN/research/research-divisions/epe

Contact Information