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fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Livermore, Luke
Languages: English
Types: Doctoral thesis
Subjects: TD
The integration of offshore wind farms through Multi Terminal DC (MTDC) networks into the GB network was investigated. The ability of Voltage Source Converter (VSC)\ud High Voltage Direct Current (HVDC) to damp Subsynchronous Resonance (SSR) and ride through onshore AC faults was studied.\ud \ud Due to increased levels of wind generation in Scotland, substantial onshore and offshore reinforcements to the GB transmission network are proposed. Possible inland\ud reinforcements include the use of series compensation through fixed capacitors. This potentially can lead to SSR. Offshore reinforcements are proposed by two HVDC links.\ud In addition to its primary functions of bulk power transmission, a HVDC link can be used to provide damping against SSR, and this function has been modelled. Simulation\ud studies have been carried out in PSCAD. In addition, a real-time hardware-in-the-loop HVDC test rig has been used to implement and validate the proposed damping scheme\ud on an experimental platform.\ud When faults occur within AC onshore networks, offshore MTDC networks are vulnerable to DC overvoltages, potentially damaging the DC plant and cables. Power reduction and power dissipation control systems were investigated to ride through onshore AC faults. These methods do not require dedicated fast communication systems. Simulations and laboratory experiments are carried out to evaluate the\ud control systems, with the results from the two platforms compared.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • 2.4.2 STEADY STATE CONTROL OF VSC-MTDC ...................................................... 23 3.3 RESULTS FOR THE 2020 GB NETWORK ............................................................... 37 4.4 IMPLEMENTATION OF THE SSR DAMPER ........................................................... 58 5.5.4 REDUCTION IN WIND FARM AC VOLTAGE AND DC CHOPPER IN COMBINATION..................................................................................................... 85 6.1.1 DAMPING SUBSYNCHRONOUS RESONANCE................................................ 89 3.14 Hybrid controller in the VSC-HVDC link (Terminal A). Active and reactive power modulation in the VSC-HVDC link………………………………………….............…….………52 3.15 Hybrid controller in the VSC-HVDC link (Terminal A). Id and Iq modulation in the VSC-HVDC link ..……………………………………….............…….……….............................53 [1] [2] [3] [4] [5] [6] [7] [8] [9] U.S. Energy Information Administration, “International Energy Outlook 2011,” 2011.
    • [14] National Grid Ltd, “Offshore Development Information Statement,” 2010.
    • [15] Alstom Grid, HVDC: Connecting to the Future, 1st ed. 2010.
    • [16] M. P. Bahrman, “HVDC transmission overview,” in 2008 IEEE/PES Transmission and Distribution Conference and Exposition, 2008, pp. 1-7.
    • [17] Forewind, “Dogger Bank Facts and Figures,” 2012. [Online]. Available: http://www.forewind.co.uk/dogger-bank/overview.html. [Accessed: 10-Aug-1BC].
    • [18] Electricity Networks Strategy Group, “Our Electricity Transmission Network: A Vision for 2020,” 2012.
    • [19] C. Hor, J. Finn, G. Thumm, and S. Mortimer, “Introducing Series Compensation in the UK Transmission Network,” in ACDC 2010, 2010.
    • [37] B. R. Andersen, “Topologies for VSC transmission,” Power Engineering Journal, vol. 16, no. 3, p. 142, 2002.
    • [38] M. Davies, M. Dommaschk, J. Dorn, J. Lang, D. Retzmann, and D. Soerangr, “HVDC PLUS - Basics and Principle of Operation,” 2008.
    • [58] J. Liang, O. Gomis-Bellmunt, J. Ekanayake, N. Jenkins, and L. Jun, “Control of multiterminal VSC-HVDC transmission for offshore wind power,” in Power Electronics and Applications, 2009. EPE '09. 13th European Conference on, 2009, pp. 1-10.
    • [68] G. Ramtharan, A. Arulampalam, J. B. Ekanayake, F. M. Hughes, and N. Jenkins, “Fault ride through of fully rated converter wind turbines with AC and DC transmission systems,” IET renewable power generation, vol. 3, no. 4, pp. 426-438, 2009.
    • [96] F. M. Hughes, O. Anaya-lara, N. Jenkins, and G. Strbac, “Control of DFIG-Based Wind Generation for Power Network Support,” IEEE Transactions on Power Systems, vol. 20, no. 4, pp. 1958-1966, 2005.
    • [97] F. M. Hughes, N. Jenkins, and G. Strbac, “Contribution of DFIG-based wind farms to power system short-term frequency regulation,” IEE Proceedings: Generation, Transmission and Distribution, vol. 153, no. 2, 2006.
    • [98] M. Hughes, O. Anaya-Lara, and N. Jenkins, “Generic Network Model for Wind Farm Control Scheme Design and Performance Assessment,” in European Wind Energy Conference & Exhibition, London, UK, 2004, pp. 1-7.
    • [99] F. M. Hughes, O. Anaya-Lara, N. Jenkins, and G. Strbac, “A Power System Stabilizer for DFIG-Based Wind Generation,” IEEE Transactions on Power Systems, vol. 21, no. 2, pp. 763-772, May 2006.
  • Inferred research data

    The results below are discovered through our pilot algorithms. Let us know how we are doing!

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