A Comparative Study of DG Impacts on Power System Stability under Equal and Unequal Load Growth Scenarios
The distributed generation (DG) technology is developed to meet the increasing load demand at a load centre by exploring locally available energy sources, including renewables. Although DG technology offers many technical and economic benefits, certain issues need further research. The impact of DG penetration on the system’s stability is one such issue that requires significant attention in power system research. This study investigates the impact of DG penetration on the system’s small-signal and transient stability under equal and unequal load growth scenarios. The unequal load growth condition is simulated by employing an orthogonal array (OA), and the impact of DG penetration on small-signal stability is analyzed through critical eigenvalues while time-domain indicators were employed to analyze transient stability. The importance of unequal load growth conditions while evaluating the impact of DG penetration on stability is demonstrated on a 3 generators, 9 bus WSCC power system.
 Y.W.Liang, Z.J.Hu and Y.P.Chen, “A survey of Distributed Generation and its Applications in Power Systems”, Power System Technology, vol.27, no. 12, pp. 71-76, 2003.
 J.A. Peças Lopes, N. Hatziargyriou, J. Mutale, P. Djapic, and N. Jenkins, “Integrating distributed generation into electric power systems: A review of drivers, challenges and opportunities,” Electric Power Systems Research, vol. 77, no. 9, pp. 1189-1203, 2007.
 P. Chiradeja and R. Ramakumar, “An approach to quantify the technical benefits of distributed generation,” IEEE Transactions on Energy Conversion, vol.19, pp. 764–773, December 2004.
 Reza M, J.G. Slootweg, P.H. Schavemaker, W.L. Kling and L. Vandersluis, “Investigating impacts of distributed generation on transmission system stability,” Power Tech Conference Proceedings, Bologna, Italy, vol. 2, June 2003
 M. K. Donnelly, J. E. Dagle, D. J. Trudnowski and G. J. Rogers, “Impacts of the distributed utility on transmission system stability,” IEEE Transactions on Power Systems, vol. 11, no. 2, pp. 741-746, May 1996.
 Ahmad Rezaee Jordehi, “Allocation of distributed generation units in electric power systems: A review,”, Renewable and Sustainable Energy Reviews, vol. 56, pp. 893-905, 2016.
 Tao Sun, Zhe Chen and F. Blaabjerg, “Flicker study on variable speed wind turbines with doubly fed induction generators,” IEEE Transactions on Energy Conversion, vol. 20, no. 4, pp. 896-905, Dec. 2005..
 Boutsika T.N, and Papathanassiou S.A. “Short-circuit calculations in networks with distributed generation,” Electric Power Systems Research, vol. 78, no. 7, pp. 1181-1191, 2008.
 N. Hidayatullah, Z. Paracha and A. Kalam, “Impact of Distributed Generation on Smart Grid Transient Stability,” Smart Grid and Renewable Energy, vol. 2, no. 2, pp. 99-109, 2011.
 A. M. Azmy and I. Erlich, “Impact of distributed generation on the stability of electrical power system,” IEEE Power Engineering Society General Meeting, 2005, vol. 2, pp. 1056-1063, 2005.
 J.G. Slootweg and W.L. Kling, “Impacts of distributed generation on power system transient stability,” IEEE Power Engineering Summer Meeting, vol. 2, Chicago, IL, USA, pp. 862–867, July 2002.
 P. K. Olulope, K. A. Folly, S. Chowdhury and S. P. Chowdhury, “Dynamic impact and assessment of stability of power systems with DG penetration: A review”, 45th International Universities Power Engineering Conference UPEC2010, Cardiff, UK, pp. 1-6, 2010.
 M. Reza, M. Gibescu, P. H. Schavemaker, W. L. Kling and L. van der Sluis, “Transient stability impacts of a ‘vertical-to-horizontal’ transformation of power systems,” 2005 IEEE Russia Power Tech, pp. 1-6, 2005.
 Davood Khani, Ahmad Sadeghi Yazdankhah and Hossein Madadi Kojabadi, “Impacts of distributed generations on power system transient and voltage stability,” Electrical Power and Energy Systems, vol. 43, pp. 488–500, July 2012.
 K. R Padiyar, Power system dynamics stability and control, Second Edition, BS Publications, Hyderabad, 2002.
 E. N. Azadani, C. Canizares and K. Bhattacharya, “Modeling and stability analysis of distributed generation,” 2012 IEEE Power and Energy Society General Meeting, pp. 1-8, 2012.
 Sanjeev K Nayak, and D N Gaonkar, “Modeling and Performance Analysis of Microturbine Generation System in Grid Connected/Islanding Mode,” 2012 IEEE International Conference on Power Electronics, Drives and Energy Systems, Bengaluru, India, pp. 1-6. December 2012,
 Math Works Incorporation. MATLAB user manual version 7.1 R14. Natick,(MA): Math Works Incorporation; 2005
 R.W. Sauer and M.A. Pai, Power System Dynamics and Stability. Pearson Education:Singapore, 2003.
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