Optimal Power Flow Analysis of Bus System using Practical Swarm Optimization

In this present era, power system is very complex. Stability, reliablity and security of power system is major concern for power engineers. In the presented work optimal powerf flow technique is proposed. The major objective is to minimize fuel cost without violating system security constraints such as power output of generator, bus voltages, shunt capacitors/reactors and transformers tap setting. To achieve this, initially, IEEE-6 bus system and IEEE-30 bus system are tested for nonconventional OPF method. The work is carried out to make use of particle swarm optimization method for solving the optimal power flow (OPF) problem for units of the same systems. The optimal power flow (OPF) is being used to find the optimal setting to operate the system. When operating cost is minimized, the generator schedule is calculated by OPF. Traditionally, the cost function of each generator is represented by a simple quadratic function. However thermal units are sometimes made to run on multiple fuels like coal, natural gas and oil. The performance of the proposed method has been demonstrated under simulated conditions on IEEE- 6 bus system with 3-generator unit and IEEE-30-Bus system with 6-Generation units.