Power Quality and Performance Assessment of Grid-connected Photovoltaic Distributed Generation with Compliance to Stipulated Grid Integration Requirements


  •   Fredrick Nkado

  •   Franklin Nkado


Recently, the demand for electrical energy has increased more than energy production due to the growing population and industrialization. Therefore, the distributed generators integration (DGs) into the distribution system has been widely adopted. This work examines the effect of photovoltaic-based distributed generator (PV-DG) integration on power quality effect of a radial distribution system. Firstly, the capacity and optimum placement of the PV-DG units in the distribution network are determined by employing the particle swarm optimization (PSO) algorithm. Then, the impact of PV-DG integration on voltage harmonic distortion is analyzed by performing harmonic load flow analysis. Also, the P-V curve method is used to evaluate the effects of higher PV-DG penetration levels on loading margin and voltage magnitude. The simulation results show that as the PV-DG units’ penetration level increases, a greater level of harmonic distortion is injected, implying that the PV-DG units should only be integrated up to the network’s maximum capacity. Therefore, high harmonic distortion is produced when the PV-DG units are penetrated beyond this maximum penetration level, which has a negative impact on the system’s performance. The total voltage harmonic distortion is 4.17 % and 4.24 % at PCC1 and PCC2 at the highest penetration level, allowing the acceptable harmonic distortion limit. Also, grid-connected PV-DG units improve loading margin and voltage magnitude, according to the P-V curve results. The standard IEEE-33 bus distribution system is modelled in ETAP software and is used as a test system for this study.

Keywords: Distribution system, ETAP, Photovoltaic-Distribution Generation (PV-DG), P-V curve, Particle swarm optimization (PSO), Power quality


A. Eltamaly, Y. Sayed, A. El-Sayed, and A. Elghaffar, "Adaptive static synchronous compensation techniques with the transmission system for optimum voltage control, " Ain Shams Eng J, ed, 2020.

A. M. Eltamaly, M. A. Mohamed, and A. I. J. S. E. Alolah, "A novel smart grid theory for optimal sizing of hybrid renewable energy systems," Solar Energy, vol. 124, pp. 26-38, 2016.

A. M. Eltamaly, M. A. Mohamed, M. Al-Saud, and A. I. J. E. O. Alolah, "Load management as a smart grid concept for sizing and designing of hybrid renewable energy systems," Engineering Optimization, vol. 49, no. 10, pp. 1813-1828, 2017.

S. Eftekharnejad, V. Vittal, G. T. Heydt, B. Keel, and J. J. I. t. o. p. s. Loehr, "Impact of increased penetration of photovoltaic generation on power systems," Power Systems, IEEE Transactions, vol. 28, no. 2, pp. 893-901, 2012.

S. S. Kumary, V. A. A. M. T. Oo, G. Shafiullah, and A. Stojcevski, "Modelling and power quality analysis of a grid-connected solar PV system," in 2014 Australasian Universities Power Engineering Conference (AUPEC), 2014, pp. 1-6: IEEE.

R. Sahoo and S. J. I. J. o. A. E. R. Kulkarni, "Impact of Photovoltaic Penetration on Distribution Systems," IEEE, vol. 14, no. 11, pp. 2596-2601, 2019.

A. Eltamaly, Y. Sayed, A.-H. El-Sayed, and A. N. A. J. A. o. F. E. J. I. Elghaffar, "Multi-control module static VAR compensation techniques for enhancement of power system quality," ANNALS of Faculty Engineering Hunedoara – International Journal of Engineering, tom XVI, pp. 47-51, 2018.

M. A. Hossain, H. R. Pota, M. J. Hossain, F. J. I. J. o. E. P. Blaabjerg, and E. Systems, "Evolution of microgrids with converter-interfaced generations: Challenges and opportunities," International Journal of Electrical Power & Energy Systems , vol. 109, pp. 160-186, 2019.

L. Xiong, M. Nour, E. J. I. J. o. C. Radwan, and D. Systems, "Harmonic Analysis of Photovoltaic Generation in Distribution Network and Design of Adaptive Filter," IJCDS Journal, vol. 9, no. 1, 2020.

M. Farhoodnea, A. Mohamed, H. Shareef, and H. Zayandehroodi, "Power quality impact of grid-connected photovoltaic generation system in distribution networks," in 2012 IEEE Student Conference on Research and Development (SCOReD), 2012, pp. 1-6: IEEE.

S. Pawar, "Harmonic analysis of high penetration pv system on grid," 2019.

G. Shafiullah and A. M. Oo, "Analysis of harmonics with renewable energy integration into the distribution network," in 2015 IEEE Innovative Smart Grid Technologies-Asia (ISGT ASIA), 2015, pp. 1-6: IEEE.

R. Yan and T. K. J. I. t. o. p. s. Saha, "Investigation of voltage stability for residential customers due to high photovoltaic penetrations," IEEE, vol. 27, no. 2, pp. 651-662, 2012.

Y. Xue, M. Manjrekar, C. Lin, M. Tamayo, and J. N. Jiang, "Voltage stability and sensitivity analysis of grid-connected photovoltaic systems," in 2011 IEEE Power and Energy Society General Meeting, 2011, pp. 1-7: IEEE.

K.-H. Kim, Y.-J. Lee, S.-B. Rhee, S.-K. Lee, and S.-K. You, "Dispersed generator placement using fuzzy-GA in distribution systems," in IEEE Power Engineering Society Summer Meeting, 2002, vol. 3, pp. 1148-1153: IEEE.

G. Carpinelli, G. Celli, F. Pilo, and A. Russo, "Distributed generation siting and sizing under uncertainty," in 2001 IEEE Porto Power Tech Proceedings (Cat. No. 01EX502), 2001, vol. 4, p. 7 pp. vol. 4: IEEE.

C. Wang and M. H. J. I. T. o. P. s. Nehrir, "Analytical approaches for optimal placement of distributed generation sources in power systems," IEEE, vol. 19, no. 4, pp. 2068-2076, 2004.

T. Ackermann, G. Andersson, and L. J. E. p. s. r. Söder, "Distributed generation: a definition," Electric Power Systems Research, vol. 57, no. 3, pp. 195-204, 2001.

C. Mehdipour and F. J. J. o. S. E. R. Mohammadi, "Design and analysis of a stand-alone photovoltaic system for footbridge lighting," Journal of Solar Energy Engineering, vol. 4, no. 2, pp. 85-91, 2019.

H. Hosseini, M. Farsadi, A. Lak, H. Ghahramani, N. J. I. J. o. T. Razmjooy, and P. P. o. Engineering, "A novel method using imperialist competitive algorithm (ICA) for controlling pitch angle in hybrid wind and PV array energy production system," International Journal on “Technical and Physical Problems of Engineering”(IJTPE), vol. 11, pp. 145-152, 2012.

M. A. Mohamed and A. M. Eltamaly, "A novel smart grid application for optimal sizing of hybrid renewable energy systems," in Modeling and Simulation of Smart Grid Integrated with Hybrid Renewable Energy Systems: Springer, 2018, pp. 39-51.

K.-y. Liu, W. Sheng, Y. Liu, X. Meng, Y. J. I. J. o. E. P. Liu, and E. Systems, "Optimal sitting and sizing of DGs in distribution system considering time sequence characteristics of loads and DGs," International Journal of Electrical Power & Energy Systems, vol. 69, pp. 430-440, 2015.

N. S. Rau and Y.-h. J. I. T. o. P. s. Wan, "Optimum location of resources in distributed planning," IEEE, vol. 9, no. 4, pp. 2014-2020, 1994.

M. AlRashidi, M. AlHajri, A. Al-Othman, and K. El-Naggar, "Particle swarm optimization and its applications in power systems," in Computational intelligence in power engineering: Springer, 2010, pp. 295-324.

S. Devi, M. J. I. J. o. E. P. Geethanjali, and E. Systems, "Optimal location and sizing determination of Distributed Generation and DSTATCOM using Particle Swarm Optimization algorithm," International Journal of Electrical Power & Energy Systems, vol. 62, pp. 562-570, 2014.

E. A. Sharew, H. A. Kefale, and Y. G. J. I. J. o. P. Werkie, "Power Quality and Performance Analysis of Grid-Connected Solar PV System Based on Recent Grid Integration Requirements," International Journal of Photoenergy, vol. 2021, 2021.

M. Abdel-Salam, M. T. El-Mohandes, and E. Shaker, "PSO-based performance improvement of distribution systems using DG sources," in 2016 Eighteenth International Middle East Power Systems Conference (MEPCON), 2016, pp. 866-870: IEEE.

H. A. Kefale, E. M. Getie, and K. G. J. I. J. o. P. Eshetie, "Optimal design of grid-connected solar photovoltaic system using selective particle swarm optimization," International Journal of Photoenergy, vol. 2021, 2021.

M. J. Tahir, I. A. Latiff, M. Alam, and M. Mazliham, "Network reconfiguration using modified particle swarm algorithm," in 2018 2nd International Conference on Smart Sensors and Application (ICSSA), 2018, pp. 1-5: IEEE.

K. V. Bhadane, M. Ballal, R. Moharil, and H. J. J. E. S. T. Suryawanshi, "Enhancement of distributed generation by using custom power device," Journal of Electronic Science and Technology, vol. 13, no. 3, pp. 246-254, 2015.

H. Hedayati, S. Nabaviniaki, Akbarimajd, and A. J. I. t. o. p. d. Akbarimajd, "A method for placement of DG units in distribution networks,"IEEE, vol. 23, no. 3, pp. 1620-1628, 2008.

M. M. Aly and M. J. E. E. Abdel-Akher, "A robust quasi-direct continuous power-flow analysis using two-bus equivalents for voltage stability analysis of radial distribution systems," Electrical Engineering, vol. 100, no. 1, pp. 47-57, 2018.

S. M. Said, B. Hartmann, M. M. Aly, M. Mosa, and R. S. Balog, "Comparison between operating modes of distributed generation on voltage profile and stability of distribution systems," in 2018 IEEE Texas Power and Energy Conference (TPEC), 2018, pp. 1-6: IEEE.

E. Ciprés Lechuga, "Analysis of the implementation of a photovoltaic plant in Catalonia," 2010.

A. A. Kadir, A. Mohamed, and H. Shareef, "Harmonic impact of grid connected photovoltaic inverters on 13.8 kv distribution system," in Regional Engineering Postgraduate Conference EPC, 2010, pp. 367-373.

I. Std, "Recommended Practices and Requirements for Harmonic Control in Electrical Power Systems," IEEE Industry Applications Society.


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How to Cite
Nkado, F. and Nkado, F. 2021. Power Quality and Performance Assessment of Grid-connected Photovoltaic Distributed Generation with Compliance to Stipulated Grid Integration Requirements. European Journal of Engineering and Technology Research. 6, 7 (Nov. 2021), 1-10. DOI:https://doi.org/10.24018/ej-eng.2021.6.7.2628.