A Simplified Approach for Load Flow Analysis of Radial Distribution Network
This paper presents a simple approach for load
flow analysis of a radial distribution network. The proposed
approach utilizes forward and backward sweep algorithm
based on Kirchoff-s current law (KCL) and Kirchoff-s voltage
law (KVL) for evaluating the node voltages iteratively. In this
approach, computation of branch current depends only on the
current injected at the neighbouring node and the current in
the adjacent branch. This approach starts from the end nodes
of sub lateral line, lateral line and main line and moves
towards the root node during branch current computation. The
node voltage evaluation begins from the root node and moves
towards the nodes located at the far end of the main, lateral
and sub lateral lines. The proposed approach has been tested
using four radial distribution systems of different size and
configuration and found to be computationally efficient.
[1] D. Rajicic, Y. Tamura, "A modification to fast decoupled power flow for
networks with high R/X ratios," IEEE Trans. on Power System, Vol. 3,
No. 2, pp.743-746, 1988.
[2] S. Iwamoto, Y. Tamura, "A load flow calculation method for illconditioned
power systems," IEEE Trans. on Power apparatus and
Systems, Vol. 100, No. 4, pp.1736-1743, 1981.
[3] S. C. Tripathy, G. Durgaprasad, O.P.Malik, G.S.Hope, "Load flow
solutions for ill-conditioned power systems by a Newton like method,"
IEEE Trans. on Power apparatus and Systems, Vol. 101, No. 10,
pp.3648-3657, 1982.
[4] D. Shirmohammadi, H. W. Hong, A. Semlyen, G. X. Luo, "A
compensation based power flow method for weakly meshed distribution
and transmission networks," IEEE Trans. on Power Systems, Vol. 3, No.
2, pp.753-762, 1988.
[5] W. H. Kersting, D. L. Mendive, "An application of ladder network theory
to the solution of three phase radial load flow problem" IEEE PES
winter meeting, New York, Jan. 1976.
[6] W. H. Kersting, "A method to teach the design and operation of a
distribution system," IEEE Trans. on Power apparatus and Systems,
Vol. 103, No. 7, pp.1945-1952, 1984.
[7] R. A. Stevens, D. T. Rizy, S. L. Purucker, "Performance of conventional
power flow routines for real time distribution automation application"
Proceedings of 18th southeastern symposium on system theory, pp.196-
200, April 1986.
[8] S. Ghosh., D. Das, "Method for load flow solution of radial distribution
network," IEE Proc.- Gener. Transm. Distrib. Vol. 146, No. 6, pp.641-
648, 1999.
[9] Rakesh Ranjan, D. Das, "Simple and efficient computer algorithm to solve
radial distribution networks," Electric power components and systems,
Vol. 31, No.1, pp.95-107, 2003.
[10] Radial Test Feeders - IEEE Distribution System Analysis Subcommittee
accessed September 2007
http://www.ewh.ieee.org/soc/pes/dsacom/testfeeders.html
[1] D. Rajicic, Y. Tamura, "A modification to fast decoupled power flow for
networks with high R/X ratios," IEEE Trans. on Power System, Vol. 3,
No. 2, pp.743-746, 1988.
[2] S. Iwamoto, Y. Tamura, "A load flow calculation method for illconditioned
power systems," IEEE Trans. on Power apparatus and
Systems, Vol. 100, No. 4, pp.1736-1743, 1981.
[3] S. C. Tripathy, G. Durgaprasad, O.P.Malik, G.S.Hope, "Load flow
solutions for ill-conditioned power systems by a Newton like method,"
IEEE Trans. on Power apparatus and Systems, Vol. 101, No. 10,
pp.3648-3657, 1982.
[4] D. Shirmohammadi, H. W. Hong, A. Semlyen, G. X. Luo, "A
compensation based power flow method for weakly meshed distribution
and transmission networks," IEEE Trans. on Power Systems, Vol. 3, No.
2, pp.753-762, 1988.
[5] W. H. Kersting, D. L. Mendive, "An application of ladder network theory
to the solution of three phase radial load flow problem" IEEE PES
winter meeting, New York, Jan. 1976.
[6] W. H. Kersting, "A method to teach the design and operation of a
distribution system," IEEE Trans. on Power apparatus and Systems,
Vol. 103, No. 7, pp.1945-1952, 1984.
[7] R. A. Stevens, D. T. Rizy, S. L. Purucker, "Performance of conventional
power flow routines for real time distribution automation application"
Proceedings of 18th southeastern symposium on system theory, pp.196-
200, April 1986.
[8] S. Ghosh., D. Das, "Method for load flow solution of radial distribution
network," IEE Proc.- Gener. Transm. Distrib. Vol. 146, No. 6, pp.641-
648, 1999.
[9] Rakesh Ranjan, D. Das, "Simple and efficient computer algorithm to solve
radial distribution networks," Electric power components and systems,
Vol. 31, No.1, pp.95-107, 2003.
[10] Radial Test Feeders - IEEE Distribution System Analysis Subcommittee
accessed September 2007
http://www.ewh.ieee.org/soc/pes/dsacom/testfeeders.html
@article{"International Journal of Electrical, Electronic and Communication Sciences:63371", author = "K. Vinoth Kumar and M.P. Selvan", title = "A Simplified Approach for Load Flow Analysis of Radial Distribution Network", abstract = "This paper presents a simple approach for load
flow analysis of a radial distribution network. The proposed
approach utilizes forward and backward sweep algorithm
based on Kirchoff-s current law (KCL) and Kirchoff-s voltage
law (KVL) for evaluating the node voltages iteratively. In this
approach, computation of branch current depends only on the
current injected at the neighbouring node and the current in
the adjacent branch. This approach starts from the end nodes
of sub lateral line, lateral line and main line and moves
towards the root node during branch current computation. The
node voltage evaluation begins from the root node and moves
towards the nodes located at the far end of the main, lateral
and sub lateral lines. The proposed approach has been tested
using four radial distribution systems of different size and
configuration and found to be computationally efficient.", keywords = "constant current load, constant impedance load,
constant power load, forward–backward sweep, load flow
analysis, radial distribution system.", volume = "2", number = "3", pages = "498-12", }