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access icon free Stability assessment for transmission systems with large utility-scale photovoltaic units

Photovoltaic (PV) systems are gradually replacing conventional synchronous generators. However, reduced system inertia and lack of dynamic grid support from PV are the main issues that could have a detrimental impact on the transient response in power systems when critical contingencies arise. In this study, the authors modelled and analysed transient and small-signal stability for a representative transmission system with realistic loading scenarios and high PV penetration levels. First, system eigenvalues were calculated to identify critical modes. Thereafter, the results of the small-signal analysis were further expanded by performing transient simulations after critical contingencies. Such contingencies detrimentally excited the critical modes of the system. To carry out this analysis, they implemented a positive-sequence dynamic model of a utility-scale PV unit (USPVU) in the open programming environment MATLAB/Simulink. This dynamic model is based on a Western Electricity Coordinating Council (WECC) generic model (full converter model), which is suitable for electromechanical transient studies. Also included was the model of the PV array, dc–dc converter, and associated control systems. The most critical factors pertaining to the detrimental or beneficial impact of USPVUs on stability were the unit commitment and dispatch strategy and the protection/control strategy during voltage swell and dip events for equivalent PV penetration and loading scenarios.

References

    1. 1)
      • 9. Red Electrica de España. The Spanish Electricity System. Preliminary report 2014’, http://www.ree.es/en/publications/, accessed 15 July 2015.
    2. 2)
      • 5. Western Electricity Coordinating Council: ‘Generic solar photovoltaic system dynamic simulation model specification’, September 2012.
    3. 3)
      • 13. Haifeng, L., Licheng, J., Le, D., et al: ‘Impact of high penetration of solar photovoltaic generation on power system small-signal stability’. 2010 Int. Conf. Power System Technology, October 2010, pp. 17.
    4. 4)
      • 32. Rodriguez, C., Amaratunga, G.A.J.: ‘Dynamic stability of grid-connected photovoltaic systems’. 2004 IEEE Power Engineering Society General Meeting, June 2004, pp. 21932199.
    5. 5)
      • 24. Wang, L., Lin, Y.H.: ‘Dynamic stability analysis of photovoltaic array connected to a large utility grid’. 2000 IEEE Power Engineering Society Winter Meeting, January 2000, pp. 476480.
    6. 6)
      • 11. Achilles, S., Schramm, S., Bebic, J.: ‘Report NREL/SR-581-42300: Transmission system performance analysis for high-penetration photovoltaics’ (National Renewable Energy Laboratory, 2008).
    7. 7)
      • 7. MATLAB/SIMULINK. The MathWorks, Inc; 2008. http://www.mathworks.com/.
    8. 8)
    9. 9)
      • 41. Song, Y.: ‘Design of secondary voltage and stability controls with multiple control objectives’. PhD thesis, Georgia Institute of Technology, 2009.
    10. 10)
    11. 11)
    12. 12)
      • 42. Gerin-Lajoie, L.: ‘Report on the EMTP-RV 39-Bus System’. IEEE PES Task Force on Benchmark Systems for Stability Controls, March 2015.
    13. 13)
      • 18. Wang, L., Lin, Y.-H.: ‘Small-signal stability and transient analysis of an autonomous PV system’. 2008 IEEE Transmission and Distribution Conf. and Exposition, April 2008, pp. 16.
    14. 14)
      • 29. Islam, G.M.S., Al-Durra, A., Muyeen, S.M., et al: ‘Low voltage ride through capability enhancement of grid connected large scale photovoltaic system’. 37th Annual Conf. on IEEE Industrial Electronics Society, November 2011, pp. 884889.
    15. 15)
      • 22. Exposito, A.G., Conejo, A.J., Cañizares, C.: ‘Electric energy systems, analysis and operation’ (CRC Press, Boca Raton, FL, USA, 2009).
    16. 16)
    17. 17)
      • 26. Wandhare, R.G., Agarwal, V.: ‘Advance control scheme and operating modes for large capacity centralised PV-grid systems to overcome penetration issues’. 37th IEEE Photovoltaic Specialists Conf., June 2011, pp. 24662471.
    18. 18)
      • 27. Walling, R.A., Clark, K.: ‘Grid support functions implemented in utility-scale PV systems’. 2010 IEEE PES Transmission and Distribution Conf. and Exposition, April 2010, pp. 15.
    19. 19)
    20. 20)
      • 28. IEEE Std. 1547: ‘IEEE standard for interconnecting distributed resources with electric power systems’, 2003.
    21. 21)
    22. 22)
      • 33. Khajehoddin, S.A., Bakhshai, A., Jain, P.: ‘A novel topology and control strategy for maximum power point trackers and multi-string grid-connected PV inverters’. 23rd Annual IEEE on Applied Power Electronics Conf. and Exposition, February 2008, pp. 173178.
    23. 23)
      • 34. Fernandez-Bernal, F., Rouco, R., Centeno, P., et al: ‘Modelling of photovoltaic plants for power system dynamic studies’. Fifth Int. Conf. on Power System Management and Control, April 2002, pp. 341346.
    24. 24)
    25. 25)
      • 4. CECOEL (Electricity Control Centre)’, http://www.ree.es/en/educaree/infographs-and-interactives/cecoel-virtual-tour, accessed 15 July 2015.
    26. 26)
      • 35. Pourbeik, P.: ‘Product ID # 1024346: Wind turbine generator model validation (WTGMV) software user's manual’ (EPRI, 2011).
    27. 27)
    28. 28)
      • 39. Pai, M.A.: ‘Energy function analysis for power system stability’ (Kluwer Academic Publishers, Boston, 1989).
    29. 29)
      • 40. Ye, Z., Walling, R., Zhou, R., et al: ‘Study and development of anti-islanding control for grid-connected inverter’ (General Electric Global Research Center, 2004).
    30. 30)
    31. 31)
    32. 32)
      • 38. Western Electricity Coordinating Council: ‘Guide for Representation of Photovoltaic Systems in Large-Scale Load Flow Simulations’, August 2010.
    33. 33)
      • 23. NERC: ‘Special Report: Standard models for variable generation’ (North American Electric Reliability Corporation, May 2010).
    34. 34)
    35. 35)
    36. 36)
      • 8. Wirth, H.: ‘Recent Facts about Photovoltaics in Germany’ (Fraunhofer ISE, May 2015).
    37. 37)
      • 3. P.O. 12.2: ‘Draft technical guidelines for wind and photovoltaic power plants connected directly to the distribution and transmission network: minimum requirements of design, equipment, operation, setting in service and security’, Spain, 2014(in Spanish).
    38. 38)
      • 36. Soni, S.: ‘Solar PV plant model validation for grid integration studies’. PhD thesis, Arizona State University, 2014.
    39. 39)
      • 10. National Renewable Energy Laboratory: ‘Report NREL/SR-560–34634: Reliable, low cost distributed generator/utility system interconnect’ (Corporate Research and Development, 2003).
    40. 40)
      • 12. Zhang, Y., Mensah-Bonsu, C., Walke, P., et al: ‘Transient over-voltages in high voltage grid connected PV solar interconnection’. 2010 IEEE Power and Energy Society General Meeting, Minneapolis, July 2010, pp. 16.
    41. 41)
      • 14. Kumkratug, P.: ‘Novel model of UPFC for evaluating transient stability of a multimachine system including the grid-connected photovoltaic system’. 3rd IEEE PES Int. Conf. and Exhibition on Innovative Smart Grid Technologies, October 2012, pp. 17.
    42. 42)
      • 31. Hernandez, J.C., Garcia, O.G., Jurado, F.: ‘Photovoltaic devices under partial shading conditions’, Int. Rev. Model Simul., 2012, 5, (1), pp. 414425.
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