Data processing: generic control systems or specific application – Specific application – apparatus or process – Electrical power generation or distribution system
Patent
1997-10-31
2000-12-05
Grant, William
Data processing: generic control systems or specific application
Specific application, apparatus or process
Electrical power generation or distribution system
700286, 700 22, G05D 1100
Patent
active
061578746
ABSTRACT:
A control system comprises a utility power line; a first meter, a first generator, a second meter and a programmable logic controller. The utility power line provides power. The first meter is positioned to measure power provided by a utility company via the utility power line. The first generator generates additional power. The second meter is positioned to measure power generated by the first generator. The programmable logic controller is in communication with the first meter and the second meter to receive input information. The programmable logic controller is also in communication with the first generator to selectively control the first generator in response to the input information. The programmable logic controller controls the first generator to keep power provided by the utility company via the utility power line below a first amount at a first time. The programmable logic controller also controls load bearing equipment that consumes the power provided via the utility power line and from the first generator. A process of managing power usage of a plant comprises receiving energy pulses; determining actual kWh being delivered by a utility company, during a demand interval; comparing the actual kWh to a preset kWh amount to determine whether actual kWh is greater than the preset kWh amount; and, if the actual kWh is greater than the preset kWh amount, then reducing the amount of power consumed by load bearing equipment. Also, if the actual kWh is greater than the preset kWh amount, then the process increases power generated a generator.
REFERENCES:
patent: 4620283 (1986-10-01), Butt et al.
patent: 5631843 (1997-05-01), Munday et al.
patent: 5696695 (1997-12-01), Ehlers et al.
Carlson John
Cooley Edwin Martin
Cumpton Ray
Tucker Donald
Bahta Kidest
Basic Resources Inc.
Grant William
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