Variable-limit demand controller for metering electrical energy
AssigneeDencor Energy Cost Controls, Inc.
InventorsTheodore A. Hedman, Maynard L. Moe
Life of this patent
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Abstract
A method and system for regulating power delivered to different commercial or residential users in which each user has variable demands for power consumption, there being a power source from which power is transmitted by a utility to each user and a utility control signal which is transmitted from the utility to each user in order to modify the power consumed by each user, the method and system of the present invention being characterized by measuring the power consumption of each user over a selected real time interval, and modifying the power consumption by each user by an amount directly related to the power consumption measurement of each user over that time interval.
Claims16
In a method for regulating power delivered by a utility to each of a plurality of users wherein each user has variable demands for power consumption, there being a power source, means for delivering power to each said user and a utility control signal transmitted from said power source to each user when it is desired to modify the power consumed by each user, the steps comprising:
- measuring the power consumption of each user;
- and
- modifying the power consumption by each user by an amount correlated with the power consumption measurement of each user when a utility control signal is transmitted to each user.
In a method for regulating electrical power delivered by a utility to each of a plurality of users wherein said users have variable demands for power consumption, there being a power source, means for transmitting electrical power to each said user, and a utility control signal selectively transmitted from a remote location to each said user to increase or decrease the electrical power consumed by each said user, the steps comprising:
- measuring the power consumption of each user over a real time interval to determine an energy usage pattern of each user;
- averaging the power consumption measurement over the real time interval based on the energy usage pattern determined for each said user;
- and
- reducing the power which can be consumed by each said user by a percentage corresponding to the average power consumption of each said user over the real time interval when said utility control signal is transmitted to each said user.
In an energy management system wherein power is delivered by a utility to each of a plurality of users wherein each user has variable demands for power consumption, said system including a power source, means for transmitting power to each said user and means for transmitting utility control signals from said utility to each user, the combination therewith of a variable demand limit controller circuit for each user comprising:
- program controlled circuit means for measuring the power consumption of each user including means for averaging the power consumption measurement of each user over a real time interval;
- utility signal receiver means for receiving utility control signals transmitted by said utility;
- data storage means for storing a percentage factor therein representative of a desired modification in power consumed by each user;
- calculating means responsive to receipt of each utility control signal by said utility signal receiver means to multiply the average power consumption measured by the percentage factor stored in said data storage means;
- and
- load control means for modifying the maximum power available to each user by an amount corresponding to the percentage factor of the average power consumption determined by said calculating means.
Dependencies are inferred from the claim text.