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Development cogeneration plant automation system

CAP SERVICE has received new order for the development of automation system for a new cogeneration plant in Italy. The plant consists of a gas turbine of 6,300 kW, a gas recovery boiler which produces steam, heated water through a battery placed in the rear and two steam generators to produce steam.

The monitoring process will be carried out with two Siemens S7 400 PLC connected in hot-backup via optical fiber. These redundant PROFIBUS PLC control in the I / O station of the auxiliary signals, control power panels with all the different devices including inverters with Profibus interface card, and various measuring devices in the field (DIRIS, Endress + Hauser).

Operator interface will be used as a supervisory system consists of two PCs and monitors based on the four-Wonderware Intouch SCADA package capable of handling the many variables of the process to be terminated. In the supervision system stores all data and control system made the production of all reports required by the customer. The two computers for redundancy are continuously linked by a mutual update of the database.

On the main PLC will be assigned to directly manage a GSM modem so that any alarm has been on the choices made, can generate an SMS alert to the telephone numbers set to the same supervisor.