Application of Linear Programming for Overcurrent Protection

Abstract

Power system without proper protective scheme is similar to an unstable system, it is more prone to fault and unwanted tripping. In major distribution system overcurrent protection is used for protection. Hence a proper coordination should be done for overcurrent protection scheme. A protective scheme should operate as fast as possible, but when it operates a lesser area must be isolated, so that less blackout should occur. The two main parameter of overcurrent protection scheme are Time setting and current setting. The setting of relay should be such that, the desired operation should occur. This paper discusses the different Linear programming techniques implemented on a proposed system. Dual Simplex method is faster as compared to other methods of Linear programming.