Honey bee mating algorithm based location of UPFC for voltage stability

Optimization is an important technique followed to make the best possible use of a power system. Now a day's voltage instability problems in a power system have become one of the most concerns in power industries. By showing the voltage stability enhancement which will further lead to improvement in the system performance, reduction of the losses, and making the system more secure. In this paper the load flow analysis is done for IEEE 14 Bus system using Newton Raphson method without applying any algorithm. Later, optimization is done using the Advanced Honey Bee Algorithm and is tested in an IEEE-14 Bus power system. By using this optimization technique, the power losses are reduced and higher convergence is obtained. The results are obtained for the above mentioned algorithms using the MATLAB software.

I. Introduction

The two main components which influence the load flow in the power systems are real power and reactive power. Generally in a transmission line the powers flow from the generating station to the consumer load, in which power losses occur. Power flow studies in a transmission line is used to obtain various line data like line voltage, real power and reactive power. To ensure reliable power supply in the system, the location of the fault should be anticipated in the early stage and the status of the circuit breakers and the relays are to be acquired using Supervisory Control and Data Acquisition Systems (SCADA). The location of UPFC in a transmission line plays a very important role as the optimal injection of reactive power at the right spot enhances the efficiency of the transmission. In this regard, the optimization technique is so designed to calculate the Line Stability Index to find the pregnable bus which will be highly useful in deciding the location of the Unified Power Flow Controller (UPFC) for compensating the injection of reactive power.