Certain investigation on voltage stability and maximum loading point in the power system with facts devices

Abstract

Nowadays the demand of electricity goes on increasing due to the rapid growth of industrial and infra structural facilities To meet out this demand of electricity a number of new private power producers are increasing All the power producers are utilizing the common existing transmission system Due to this the magnitudes of the power flow in some of the transmission lines reach closer to their maximum limits In addition the power system engineers operate the power system network up to its maximum limits economically to improve the system efficiency But voltage stability problems arise due to the maximum loadability of a transmission system Hence power system operators must track the system I e how close the transmission system is to its maximum loadability limit. As line loading of transmission system approaches their maximum loading limit action has to be taken to relive the critical transmission lines. Hence the Maximum Loading Point MLP of the system must be determined to operate the system upto their maximum limits without losing its stability In this situation if it fails to maintain bus voltage within the permissible limits then the system enters into voltage instability This will lead to cascaded outages and power system blackout newline