I. Introduction
A power grid involves different power systems that together serve as the source to the grid which in turn supplies power to the customers. The performance and availability of the generated power varies from system to system. For example, steam power systems with fuel sources like nuclear or coal provides for the baseload, which requires continuous operation with approximately constant power output. Moreover, a steam powered system requires prolonged time for responding to the load change or varying its output. Whereas a natural gas power system responds faster to load changes.