Effect of Physical Constraints on the Dynamics of a Multi-Area Interconnected Power System

An attempt is made in this paper to study the dynamic performances of a multi ? area interconnected power system considering all possible physical constrains in the power system using conventional integral controllers. Three area with reheat type turbine either single stage or double stage system is considered. Performances of single stage and double stage turbine on the dynamics of power system have been investigated. Since the area control error (ACE) is measured at a fixed interval of time, hence the system is modeled in continuous-discrete mode. Appropriate values of physical constraints are considered. This paper examined the proper values of speed regulation parameter (Ri) and sampling time constant (T) to maintain the system stability. System performances are studied with 10% (sever case) load perturbation in all the areas in MATLAB-SIMULINK environment.