A Model of Cogeneration Plants Based on Small-size Gas Turbines

In the following a dynamic mathematical model of a generic cogeneration plant with microturbine is described and the corresponding regulating system is realized. The chief aim of this model is the evaluation of the services such a system is able to provide to an interconnected electric network, both in normal operation and in case of wide perturbations, or to an islanded grid in consequence of the separation from the main network. The design of the regulating system takes into account the maximum acceptable power variations, in observance of the limitations the constructor has imposed to the process variables and respecting the requirements of the local thermal loads; the result is a quick and robust regulation, even in case of internal failures.