Three Area Network Load Frequency Control with Intelligent Controllers Including DG

Abstract

This paper deals with the automatic generation control of inter connected multi area grid network. The first purpose of the AGC is to balance the full system generation against system load and losses so the specified frequency and power interchange with neighboring systems are maintained. Any pair between generation and demand causes the system frequency to deviate from regular worth. So high frequency deviation could result in system collapse. This necessitates associate correct and quick acting controller to take care of constant nominal frequency. The limitations of the conventional controls are slow and lack of efficiency in handling system non-linearity. This leads to develop a control technique for AGC. In this paper both conventional PI and FUZZY controller approach of automatic generation control has been examined. Fuzzy based AGC has been used for all optimization purposes. System performance has been evaluated at various disturbances such as, load disturbances, grid disturbances and both load and grid disturbances. Various responses due to conventional and proposed FUZZY based AGC controllers have been compared at load disturbances, grid disturbances and both load and grid disturbances.