Development of PC based energy management system for electrical energy saving of high voltage customer

This paper has developed a PC based energy management system associated with automatic meter reading and various load control functions for load management of industrial and commercial customers. Automatic meter reading configured by a programmable logic controller and power meter supports the function of recording 20 power parameters retrieved from an academic substation. Load control functions; which consist of demand control, timer control, cycling on/off control and direct control, are designed to effectively reduce peak load and to save electrical energy. Several types of software program coded by Visual Basic, PLC ladder language, and partial Diamond package, are designed to integrate all hardware equipment in energy management system. The entire system has been installed and successfully operated since October 1997. Statistical data collected from 1997/10 to 1999/10 indicate that the proposed effect for peak load cutting and energy saving may be justified