Short circuit currents evaluation in Combined Heat Cooling and Power (CHCP) systems

The paper deals with the analysis of the new combined heat cooling and power (CHCP) systems, considering a real installation in a plastic film industry. The major aim of the paper is the evaluation of the short-circuit currents in the main power center that supply the system. These values are really significant, because the presence of distributed generation (DG) systems connected to the distribution system determines an increase of the short-circuit currents that can impact the correct operation and selectivity of the protection system. A detailed model of the whole system has been implemented, using as input data the values coming from the real considered case of CHCP system. The test net, suitably realized, is then able to faithfully represents the considered system and it is used for carrying out many simulations.