An analytical approach for optimal size of distributed generation unit

This paper proposes an analytical method to calculate the optimal size for DG for minimizing the total power losses in distribution systems. This analytical expression is based on calculation of coefficient that linearly relates active and reactive power to voltage and angle. A Technique to get the optimal size is presented for DG capable of delivering real power. Besides, grid search algorithm method is also introduced. The DG unit is sized to achieve the highest loss reduction in distribution networks. This method is executed on a typical 22-bus and 58-bus test systems at three different load levels and yields efficiency in improvement of voltage profile and reduction of power losses. Results obtained from the proposed methodology are compared with that of the classical grid search algorithm. The results obtained are encouraging.

[1]  Om P. Malik,et al.  Risk-based distributed generation placement , 2008 .

[2]  Chanan Singh,et al.  Dispersed generation planning using improved Hereford ranch algorithm , 1998 .

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

[4]  Caisheng Wang,et al.  Analytical approaches for optimal placement of distributed generation sources in power systems , 2004, IEEE Transactions on Power Systems.

[5]  Caisheng Wang,et al.  Analytical approaches for optimal placement of distributed generation sources in power systems , 2004 .

[6]  N. S. Rau,et al.  Optimum location of resources in distributed planning , 1994 .

[7]  Nadarajah Mithulananthan,et al.  AN ANALYTICAL APPROACH FOR DG ALLOCATION IN PRIMARY DISTRIBUTION NETWORK , 2006 .

[8]  F. Pilo,et al.  A multiobjective evolutionary algorithm for the sizing and siting of distributed generation , 2005, IEEE Transactions on Power Systems.

[9]  D.M. Falcao,et al.  Impact of distributed generation allocation and sizing on reliability, losses and voltage profile , 2003, 2003 IEEE Bologna Power Tech Conference Proceedings,.

[10]  Nadarajah Mithulananthan,et al.  Multiple Distributed Generator Placement in Primary Distribution Networks for Loss Reduction , 2013, IEEE Transactions on Industrial Electronics.

[11]  J. Mutale,et al.  Allocation of losses in distribution systems with embedded generation , 2000 .

[12]  Tuba Gozel,et al.  An analytical method for the sizing and siting of distributed generators in radial systems , 2009 .

[13]  Nadarajah Mithulananthan,et al.  Analytical Expressions for DG Allocation in Primary Distribution Networks , 2010, IEEE Transactions on Energy Conversion.