Impact Study of Distributed Generations in Voltage Sag Mitigation Using an Improved Three-Phase Unbalanced Load Flow for Active Distribution Network

Year 2022, Volume: 2 Issue: 2, 124 - 133, 31.10.2022

Ujjal Sur

https://doi.org/10.5152/tepes.2022.21046

https://izlik.org/JA37BZ57LP

Abstract

In this paper, a new three-phase unbalanced distribution load flow (DLF) technique is proposed to study the impact of distributed generations (DGs) installed in the distribution networks in mitigating the voltage sag. Distributed generations are modeled as variable reactive power and constant power factor source with both wind- and solar-powered DG in the case study. The proposed DLF technique is based on the application of set theory. Effect of DGs in mitigating voltage sag is mathematically explained with the help of phasor diagram. The proposed technique is tested over standard IEEE 13 and IEEE 123 bus distribution networks with programming in MATLAB platform. To justify the claims, different cases have been studied like load increment and increasing maximum power limit of DGs. Also, a comparison is drawn between proposed DLF technique and traditional backward–forward sweep method where the efficacy of proposed technique is proved over the traditional method.

Keywords

Distributed generations (DGs) , distribution load flow (DLF) , distributed generations (DGs) , voltage sag , radial distribution network.

References

• 1. A. Keane et al., “State-of-the-art techniques and challenges ahead for distributed generation planning and optimization,” IEEE Trans. Power Syst., vol. 28, no. 2, pp. 1493–1502, May 2013.
• 2. D. Shirmohammadi, H. W. Hong, A. Semlyen, and G. X. Luo, “A compensation- based power flow method for weakly meshed distribution and transmission networks,” IEEE Trans. Power Syst., vol. 3, no. 2,pp. 753–762, May 1988.
• 3. W. C. Wu, and B. M. Zhang, “A three-phase power flow algorithm for distribution system power flow based on loop-analysis method,” Int. J. Electr. Power Energy Syst., vol. 30, no. 1, pp. 8–15, January 2008.
• 4. A. N. Augugliaro, L. U. Dusonchet, S. A. Favuzza, M. G. Ippolito, and E.R. Sanseverino, “A backward sweep method for power flow solution in distribution networks,” Int. J. Electr. Power Energy Syst., vol. 32, no. 4,pp. 271–280, May 2010.
• 5. Jen-Hao Teng, and Chuo-Yean Chang, “A novel and fast three-phase load flow for unbalanced radial distribution systems,” IEEE Trans. Power Syst., vol. 17, no. 4, pp. 1238–1244, November 2002.
• 6. S. Khushalani, J. M. Solanki, and N. N. Schulz, “Development of three- phase unbalanced power flow using PV and PQ models for distributed generation and study of the impact of DG models,” IEEE Trans. Power Syst., vol. 22, no. 3, pp. 1019–1025, August 2007.
• 7. Y. Zhu, and K. Tomasovic, “Adaptive power flow method for distribution systems with dispersed generation,” IEEE Trans. Power Del., vol. 17, no. 3, pp. 822–827, July 2002.
• 8. C. S. Cheng, and D. Shirmohammadi, “A three-phase power flow method for real-time distribution system analysis,” IEEE Trans. Power Syst., vol. 10, no. 2, pp. 671–679, May 1995.
• 9. S. M. Moghaddas-Tafreshi, and E. Mashhour, “Distributed generation modeling for power flow studies and a three-phase unbalanced power flow solution for radial distribution systems considering distributed gen- eration,” Electr. Power Syst. Res., vol. 79, no. 4, pp. 680–686, April 2009.
• 10. T. -H. Chen, M. -S. Chen, T. Inoue, P. Kotas, and E. A. Chebli, “Three- phase cogenerator and transformer models for distribution system analysis,” IEEE Trans. Power Del., vol. 6, no. 4, pp. 1671–1681, October 1991.
• 11. J. -H. Teng, “Modelling distributed generations in three-phase distribution load flow,” IET Gener. Transm. Distrib., vol. 2, no. 3, pp. 330–340, May 2008.
• 12. S. Biswas, S. K. Goswami, and A. Chatterjee, “Optimal distributed generation placement in shunt capacitor compensated distributed systems considering voltage sag and harmonics distortions,” IET Gener. Transm. Distrib., vol. 8, no. 5, pp. 783–797, May 2014.
• 13. S. Biswas, S. K. Goswami, and A. Chatterjee, “Optimum distributed generation placement with voltage sag effect minimization,” Energy Convers. Manag., vol. 53, no. 1, pp. 163–174, January 2012.
• 14. S. Ganguly, and D. Samajpati, “Distributed generation allocation on radial distribution networks under uncertainties of load and generation using genetic algorithm,” IEEE Trans. Sustain. Energy, vol. 6, no. 3, pp. 688–697, July 2015.
• 15. A. E. Feijoo, and J. Cidras, “Modeling of wind farms in load flow analysis,” IEEE Trans. Power Syst., vol. 15, no. 1, pp. 110–115, February 2000.
• 16. M. E. Baran, and E. A. Staton, “Distribution transformer models for branch current based feeder analysis,” IEEE Trans. Power Syst., vol. 12, no. 2, pp. 698–703, May 1997.
• 17. G. Kron, “Tensorial analysis of integrated transmission systems, Part I, the six basic reference frames,” Trans: AIEE, vol. 70, no. 2, pp. 1239–1248, July 1951.
• 18. IEEE, “PES distribution test feeders”. Available: http://ewh.ieee.org/soc/ pes/dsacom/testfeeders/index.html.
• 19. Vestas Corp. Available: http://www.vestas.dk.