Totalizing and Metering for Optimum Control of Purchased and Generated Power at a Large Chemical Complex

A large chemical complex having the total electrical load served by in-plant generation and purchased power from four remotely located purchased-power substations required electrical load information in one location. The megawatt and megavar information is used to control the ``take´´ from the utility company to optimize billing costs. Total purchased power and individual substation load information is required to permit control of purchased-power load by manipulation of generation and plant load.