Advantages of an electrical control and energy management system

This paper discusses an electrical control and energy management system (EC EMS) that was installed at Indian Petrochemicals Corporation Limited (IPCL) Nagathone Gas Cracker complex located in Maharashtra, India. This distribu ted control system (DCS) provided computer assisted control in the areas of : Demand control; Automatic generation control, including MW and MVAR manag ement; Power factor control; Automatic tap changer control; Load shedding; Automatic synchronization of generator and ties; Remote control of breakers . Previously, IPCL, like most other petrochemical companies in India, relie d on operator control For power house functions. The process is always auto mated, but the power house equipment is usually manually controlled, Electr ical control and energy management systems are not thought to be necessary. However, in this case the consultants for IPCL and the DCS supplier convin ced IPCL that an ECEMS would save them enough money in operating costs to p ay for the new control system. The control system discussed in this paper r educed operating costs by satisfying the process steam and power demands in the most cost-effective manner. In addition, the system took action to res pond to electrical disturbances, such as loss of tie line and generator tri pping, so that stable conditions were restored. (C) 2000 Elsevier Science L td. All rights reserved.