A Three Phase Power Flow Algorithm for Distribution Network Incorporating the Impact of Distributed Generation Models

Abstract The significant penetration of Distributed Generation(DG) systems in electrical power industry is mainly driven by the ever increasing demand for electrical power and growing environmental concerns. Power Flow Studies play a vital role in planning the future expansion of power system as well as for deciding the optimum operation of the existing power system. The ill conditioned nature of distribution system as well as unbalanced nature of DG sources demand unbalanced power flow studies for analysing the DG integrated distribution system. For the power flow studies, DGs can be modelled as either PQ or PV nodes based on the type and interconnection method to the grid. The paper presents an unbalanced power flow algorithm based on the current summation method for the distribution system with the DGs modelled either as PQ or PV node. Handling of PV nodes is done with the help of the sensitivity impedance matrix. The proposed algorithm is validated with IEEE 13 bus distribution feeder

[1]  Rajesh Kumar Nema,et al.  Planning of grid integrated distributed generators: A review of technology, objectives and techniques , 2014 .

[2]  M. S. Srinivas.  Distribution load flows: a brief review , 2000, 2000 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.00CH37077).

[3]  William Kersting,et al.  Distribution System Modeling and Analysis , 2001, Electric Power Generation, Transmission, and Distribution: The Electric Power Engineering Handbook.

[4]  R. Ramakumar,et al.  An approach to quantify the technical benefits of distributed generation , 2004, IEEE Transactions on Energy Conversion.

[5]  P.P. Barker,et al.  Determining the impact of distributed generation on power systems. I. Radial distribution systems , 2000, 2000 Power Engineering Society Summer Meeting (Cat. No.00CH37134).

[6]  D. Das,et al.  Simple and efficient method for load flow solution of radial distribution networks , 1995 .

[7]  Lennart Söder,et al.  Distributed generation : a definition , 2001 .

[8]  Mohammad Yusri Hassan,et al.  Optimal distributed renewable generation planning: A review of different approaches , 2013 .

[9]  R. Berg,et al.  Mechanized Calculation of Unbalanced Load Flow on Radial Distribution Circuits , 1967 .

[10]  N. Hadjsaid,et al.  Dispersed generation impact on distribution networks , 1999 .

[11]  U. Eminoglu,et al.  A new power flow method for radial distribution systems including voltage dependent load models , 2005 .

[12]  Nikos D. Hatziargyriou,et al.  Integrating distributed generation into electric power systems: A review of drivers, challenges and opportunities , 2007 .