HVDC transmission line for interconnecting power grids in India and Sri Lanka

In this paper, the proposed interconnection of Sri Lankan power system grid and southern regional grid of Indian grid is modeled using a simple VSC configurations based on HVDC transmission. The control implemented is made in such a way that this will allow power transmissions in either way. Therefore voltage vector PLL based control together with DC-link voltage regulation is implemented. Here the HVDC both end VSC are operated with very similar controls and the only difference is one is operated as main and the other operated as sub. The main VSC controls the power flow and other follow up the main. The proposed system is modeled using PSCAD/EMTDC. Whilst the Impact of frequency variation and sudden load rejection due to one of the grid system failure is being analyzed in this paper, the reactive power control at both ends VSC to support the voltage regulation is also being studied. Simulation results show as to how the transients due to frequency fluctuation and country blackout will impact the HVDC transmission line's operations.

[1]  M.P. Bahrman,et al.  HVDC transmission overview , 2008, 2008 IEEE/PES Transmission and Distribution Conference and Exposition.

[2]  E. Doheny.  United States Agency for International Development , 2011 .

[3]  S. P. Teeuwsen,et al.  Dynamic performance of the new 400 kV Storebaelt HVDC project , 2009, 2009 IEEE/PES Power Systems Conference and Exposition.

[4]  Marian P. Kazmierkowski,et al.  Current control techniques for three-phase voltage-source PWM converters: a survey , 1998, IEEE Trans. Ind. Electron..

[5]  Dr. R. C. Bansal,et al.  Some Issues Related to Power Generation Using Wind Energy Conversion Systems: An Overview , 2005 .

[6]  V. Dinavahi,et al.  Detailed modeling of CIGRE HVDC benchmark system using PSCAD/EMTDC and PSB/SIMULINK , 2006, IEEE Transactions on Power Delivery.

[7]  Hasan Komurcugil,et al.  A novel current-control method for three-phase PWM AC/DC voltage-source converters , 1999, IEEE Trans. Ind. Electron..

[8]  S. Sugimoto,et al.  Development and testing of prototype models for a high-performance 300 MW self-commutated AC/DC converter , 1997 .

[9]  M. Sublich,et al.  Impact of stray capacitance on HVDC harmonics , 1989 .

[10]  Nicholas Jenkins,et al.  Simulated Onshore-Fault Ride through of Offshore Wind Farms Connected through VSC HVDC , 2008 .

[11]  R. W. Menzies,et al.  Effect of DC capacitance of a STATCON on the dynamic performance at a weak HVDC terminal , 1995, IEEE WESCANEX 95. Communications, Power, and Computing. Conference Proceedings.