A grid-connected inverter
controlling method to analyze dynamic process of large-scale and grid-connected
photovoltaic power station is proposed. The reference values of control
variables are composed of maximum power which is the output of the photovoltaic
array of the photovoltaic power plant, and power factor specified by
dispatching, the control strategy of dynamic feedback linearization is adopted.
Nonlinear decoupling controller is designed for realizing decoupling control of
active and reactive power. The cascade PI regulation is proposed to avoid
inaccurate parameter estimation which generates the system static error.
Simulation is carried out based on the simplified power system with large-scale
photovoltaic plant modelling, and the power factor, solar radiation strength,
and bus fault are considered for the further research. It’s demonstrated that
the parameter adjustment of PI controller is simple and convenient, dynamic
response of system is transient, and the stability of the inverter control is
Cite this paper
Z. Zhang and H. Li, "Research on Control Method of Inverters for Large-scale Grid Connected Photovoltaic Power System," Energy and Power Engineering, Vol. 5 No. 4, 2013, pp. 1503-1507. doi: 10.4236/epe.2013.54B284.
 L. W. Pierce, “Transformer Design and Application Consideration for non Sinusoidal Load Currents,” IEEE Trans, on Industry Applications, Vol. 2, No. 3, 1996, pp. 33-645.
 C. J. Liu and R. G. Yang, “Calculation and Analysis of Transformer’s Harmonic Loss,” Power System Protection and Control, 2008.
 M. B. B. Sharifian, J. Faiz, S. A. Fakheri and A. Zraatparvar, “Derating of Distribution Transformers for Non-sinusoidal Load Currents using Finite Element Method,” Vol. 25, No. 7, 2003, pp. 754-757．
 E．B．Makram, R．L．Thompson and A．A． Girgis, “A New Laboratory Experiment for Transformer Modeling in the Presence of Harmonic Distortion using a Computer Controlled Harmonic Generator,” IEEE Trans Power System,1988. doi:10.1109/59.193007
 IEEE Recommended Practice for Establishing Transformer Capability When Supplying Non-sinusoidal Load Currents, ANSI/IEEE Standard C57, 2008, pp. 110-2008.
 D. Yildirim and E. F. Fuchs, “Measured Transformer Derating and Comparison with Harmonic Loss Factor (FHL) Approach,” IEEE Transactions on Power Deliwery, Vol. 15, 2000, pp. 186-191． doi:10.1109/61.847249
 P. Li, G. D. Li, Y. H. Xu and S. J. Yao, “Methods Comparation and Simulation of Transformer Harmonic Losses,” 2010,
 E. F. Fuchs, D. Yildirim and W. M. Grady, “Measurement of Eddy-current Loss Coefficient PEC-R, Derating of Single-phase Transformers and Comparison with K-factor approach,” IEEE Trans. on Power Delivery, Paper 99WM104, to be published.
 IEEE Recommended Practice for Establishing Transformer Capability when Supplying Non-sinusoidal Load Currents, ANSUEEE Sfandard C57, 1986, p. 110.
 S. Tao, X. N. Xiao, “Comparing Transformer Derating Computed Using the Harmonic Loss Factor FHL and K-Factor,” Advanced Technology of Electrical Engineering and Energy, 2008.
 I. Faiz, at al., “Research Repotl on Effect of Non-sinusoidal Loads upon Distribution Transformers and Wmtion Factor Estimation for Optimal Qeration of Transformer-Part l,” (in Persian), Azarbaijon Regional Elecm'cig Company, TabriL Iran, Spring 2001.