Distributed Load Flow Analysis using Graph Theory

In today scenario, to meet enhanced demand imposed by domestic, commercial and industrial consumers, various operational & control activities of Radial Distribution Network (RDN) requires a focused attention. Irrespective of sub-domains research aspects of RDN like network reconfiguration, reactive power compensation and economic load scheduling etc, network performance parameters are usually estimated by an iterative process and is commonly known as load (power) flow algorithm. In this paper, a simple mechanism is presented to implement the load flow analysis (LFA) algorithm. The reported algorithm utilizes graph theory principles and is tested on a 69- bus RDN.

Authors:

• D. P. Sharma
• A. Chaturvedi
• G.Purohit
• R.Shivarudraswamy

Keywords:

• Radial Distribution network
• Graph
• Load-flow
• Array.

References:

[1] W.F Tinny and C.E. Hart, "Power flow solution of the Newton Method",
IEEE Transactions, PAS-86, 1967, pp. 1449-1456.
[2] B. Scott and O. Alsac, "Fast decoupled load flow", IEEE Transactions,
PAS-93, 1974, pp. 859-869.
[3] M.E. Baran and F. F.Wu, "Optimal capacitor placement on radial
distribution systems", IEEE Transactions on Power Delivery, Vol. 4, No.
1, 1989, pp. 725-734..
[4] J. Nanda, M.S. Srinivas, M. Sharma, S.S. Dey, L.L. Lai, "New findings
on Radial Distribution system load flow algorithms", Proc. IEEE
conference, 2000, pp. 1157-1161.
[5] S. Mok, S. Elangovan, C. Longjian, M. M. A. Salama, "A new approach
for power flow analysis of balanced distribution systems" Electric
Machines and Power Systems, Vol. 28, 2000, pp. 325-340.
[6] P. Aravindhababu, S. Ganapathy, K.R.Nayar, " A novel technique for
the analysis of radial distribution systems", International Journal of
Electrical Power and Energy Systems, Vol. 23, 2001, pp. 167-171.
[7] B. Venkatesh and R. Ranjan ," Data structure for radial distribution
system load flow analysis ", IEE Proc.-Gener. Transm. Disirih. Vol. 150.
No 1. Junuory 2003.
[8] K. Prasad, N. C. Sahoo, A. Chaturvedi and R. Ranjan "A simple
approach in branch current computation in load flow analysis of radial
distribution systems", IJEEE - International Journal for Electrical
Engineering Education, Vol.44/1, PP: 49-63, January 2007.
[9] Cormen T. H., C.E. Leiserson, and R.L Rivest, Introduction to
Algorithms,Prentice-Hall of India Pvt.Ltd.,New Delhi,2001