Power Systems

Power Systems

  • Submitted By: jaggu1942
  • Date Submitted: 06/24/2009 10:21 PM
  • Category: Technology
  • Words: 6437
  • Page: 26
  • Views: 560


1.1 Objective and goal of the project

Load flow or power flow is the solution for the normal balanced steady-state operating conditions of an electric power system. Load flow analysis became an essential prerequisite for power system studies as it is used to ensure that electrical power transfer from generators to consumers through the grid system is stable, reliable and economic. The information obtained from load flow studies can be used for the studies of normal operating mode, contingency analysis, outage security assessment, as well as optimal dispatching and stability.
Many programs of real-time applications in the area of distribution automation (DA), such as network optimization, Var. planning, switching, state estimation, and so forth, require a robust and efficient load flow method. Such a load flow method must be able to model the special features of distribution systems in sufficient detail. The well-known characteristics of an electric distribution system are

▪ Radial or weakly meshed structure
▪ Multiphase and unbalanced operation
▪ Unbalanced distributed load
▪ Extremely large number of branches and nodes
▪ Wide-ranging resistance and reactance values

The above features of the radial distribution system make the traditional methods fail and so we need a new method.
In India all the 11 kV rural distribution feeders are radial and too long. The voltages at the far end of many such feeders are very low with very high voltage regulation. Many of these practical rural distribution feeders have failed to converge while using NR and FDLF methods.

Therefore, in this project our main motivation has been to develop an efficient load flow technique for radial distribution networks by using a unique network topology method.

1.2 Detailed Literature Survey

Several load flow algorithms specially designed...

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