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MATLAB Coding and Simulation for Load Flow Analysis

As large AC power cannot be stored in any device, the generation of electric power must be balanced with the load demand. The demand of the load keeps on changing. So it becomes necessary for the power system to meet the peak load demand and base load demand for the reliable and economic use of power. To make most reliable and suitable system it becomes necessary to perform power flow analysis. There are different approaches for the analysis of Power flow in the power system network. Among them the Newton-Raphson is the one which is mostly used for the power flow analysis. The other iterative methods for power flow include Gauss-Seidel, Fast Decoupled etc. The Newton-Raphson method is used frequently for the power flow because it has the advantage of processing large data for system comprising of large branches and buses. This allows large computer memory to be used for storing the Jacobian elements and to process the program.

The power flow analysis can also be performed using various simulations software. The basic simulations software used are Matpower, PSAT and NETBAS. PSAT and Matpower are the MATLAB toolboxes used for power flow analysis and are freeware software. In Matpower it becomes difficult to enter data for complex network. PSAT is more user friendly than the Matpower. NETBAS is the sophisticated among the software, in which we can easily perform the power flow analysis of complex system and can provide many useful and relevant data of the system.

In this report, we have presented the fundamental concepts for power flow analysis and the analysis of ring and radial networks up to 14 buses. This report also presents various compensating which helps in improving of the voltage profile of the system. The report is also concentrated towards the development of MATLAB coding of the Newton-Raphson method of power flow.


  •     Mandip Pokharel
  •     Kusang Sherpa
 

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