Energy monitor and control system
First Claim
1. A system for controlling a plurality of variable rate consuming units comprising:
- means for determining the status of said units;
first means for comparing the sum of the consumption of said units with a target;
second means for comparing said sum and said target minus a differential for said units;
means for establishing a sequence of increasing and decreasing total consumption of said units, each step of said sequence representing a condition of more than one unit;
means for entering said sequence as a function of said status and traversing said sequence as a function of said comparisons.
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Abstract
A system for controlling a plurality of variable rate consuming units using a unique sequence to optimize the number of units on and the total consumption of the units relative to a target by increasing and decreasing total consumption from a status position in said sequence in response to a comparison of the total consumption of all units with a target and to a comparison of the total consumption with the target minus the differential consumption to the next step from the status position in the unique sequence. The units status and the results of the comparisons address a device storing said unique sequence to provide consumption requested status which may be overridden by a cycling means to provide a minimum and maximum off time and minimum on time demand command status for demand controllable units. A real time clock addresses a storage device to provide command status for time controllable units. The time command status and demand command status may be ORed to provide command status for units which are both demand and time controllable.
60 Citations
51 Claims
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1. A system for controlling a plurality of variable rate consuming units comprising:
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means for determining the status of said units; first means for comparing the sum of the consumption of said units with a target; second means for comparing said sum and said target minus a differential for said units; means for establishing a sequence of increasing and decreasing total consumption of said units, each step of said sequence representing a condition of more than one unit; means for entering said sequence as a function of said status and traversing said sequence as a function of said comparisons. - View Dependent Claims (2, 3, 4, 5, 6)
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7. In a system for controlling a plurality of individually controllable units by increasing or decreasing total units capacity to achieve a target value of the sum of a common measurable variable of said units, the improvement comprising means for increasing and decreasing said units capacity by traversing the following sequence from a sensed state:
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space="preserve" listing-type="tabular">______________________________________ U.sub.n U.sub.(n-1) . . . . U.sub.3 U.sub.2 U.sub.1 ______________________________________ 1 0 0 0 0 0 2 0 0 0 0 1 3 0 0 0 1 0 4 0 0 1 0 0 ;
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n 0 1 0 0 0 n+1 1 0 0 0 0 n+2 1 0 0 0 1 n+3 1 0 0 1 0 n+4 1 0 1 0 0 ;
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2n 1 1 0 0 0 2n+1 1 1 0 0 1 ;
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##STR1## 1 1 1 1 1 ______________________________________where n is the number of controllable units and the units are in increasing order of capacity where U1 has the smallest consumption, addressable storage means for storing said sequence, means for sensing capacity state of said units and means for addressing said storage means with said sensed state. - View Dependent Claims (8, 9, 10, 11, 12)
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13. In a system for controlling a plurality of individually controllable units by increasing or decreasing total units capacity to achieve a target value of the sum of a common measurable variable of said units, the improvement comprising means for increasing and decreasing said units capacity by traversing the following sequence from a sensed state:
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space="preserve" listing-type="tabular">______________________________________ U.sub.n U.sub.(n-1) . . . . U.sub.3 U.sub.2 U.sub.1 ______________________________________ 1 0 0 0 0 0 2 0 0 0 0 1 3 0 0 0 1 0 4 0 0 1 0 0 ;
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n 0 1 0 0 0 n+1 1 0 0 0 0 n+2 1 0 0 0 1 n+3 1 0 0 1 0 n+4 1 0 1 0 0 ;
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2n 1 1 0 0 0 2n+1 1 1 0 0 1 ;
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##STR2## 1 1 1 1 1 ______________________________________where n is the number of controllable units and the units are in increasing order of capacity where U1 has the smallest consumption, and said means includes means for decreasing total units capacity in said sequence when said sum exceeds said target and increasing total units capacity when said sum is less than said target minus the capacity differential for the next step in said sequence. - View Dependent Claims (14)
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15. In a system for controlling a plurality of individually controllable units by increasing or decreasing total units capacity to achieve a target value of the sum of a common measurable variable of said units, the improvement comprising means for increasing and decreasing said units capacity by traversing the following sequence from a sensed state:
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space="preserve" listing-type="tabular">______________________________________ U.sub.n U.sub.(n-1) . . . . U.sub.3 U.sub.2 U.sub.1 ______________________________________ 1 0 0 0 0 0 2 0 0 0 0 1 3 0 0 0 1 0 4 0 0 1 0 0 ;
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n 0 1 0 0 0 n+1 1 0 0 0 0 n+2 1 0 0 0 1 n+3 1 0 0 1 0 n+4 1 0 1 0 0 ;
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2n 1 1 0 0 0 2n+1 1 1 0 0 1 ;
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##STR3## 1 1 1 1 1 ______________________________________where n is the number of controllable units and the units are in increasing order of capacity where U1 has the smallest consumption, and said means includes means for not changing total units capacity when said sum exceeds said target minus the capacity differential for the next step in the sequence but is less than said target. - View Dependent Claims (16)
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17. A system for controlling a plurality of variable rate consuming units comprising:
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means for determining the status of said units; first means for comparing the sum of the consumption of said units with a target; means for establishing a sequence of increasing and decreasing total consumption of said units, each step of said sequence representing a condition of more than one unit; and means for entering said sequence as a function of said status and traversing said sequence as a function of said comparison; second means for comparing a variable other than consumption to a predetermined value and overriding said status whereby said traversing means traverses said sequence as a function of both comparison means and not said status.
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18. A system for controlling a plurality of variable rate consuming units comprising:
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means for determining the status of said units; first means for comparing the sum of the consumption of said units with a target; second means for comparing a variable other than consumption to a predetermined value; means for establishing a sequence of increasing and decreasing total consumption of said units, each step of said sequence representing a condition of more than one unit; and means for entering said sequence as a function of said status and traversing said sequence in sequence as a function of said first comparison means and out of sequence as a function of both comparison means.
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19. A system for controlling a plurality of variable rate consuming units comprising:
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means for determining the status of said units; means for comparing the sum of the consumption of said units with a target; means for establishing the following sequence of increasing and decreasing total consumption of said units;
space="preserve" listing-type="tabular">______________________________________ U.sub.n U.sub.(n-1) . . . . U.sub.3 U.sub.2 U.sub.1 ______________________________________ 1 0 0 0 0 0 2 0 0 0 0 1 3 0 0 0 1 0 4 0 0 1 0 0 ;
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n 0 1 0 0 0 n+1 1 0 0 0 0 n+2 1 0 0 0 1 n+3 1 0 0 1 0 n+4 1 0 1 0 0 ;
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2n 1 1 0 0 0 2n+1 1 1 0 0 1 ;
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##STR4## 1 1 1 1 1 ______________________________________where n is the number of controllable units and the units are in increasing order of capacity where U1 has the smallest consumption; and means for traversing said sequence as a function of said status and comparison.
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20. A system for controlling a plurality of variable rate consuming units comprising:
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first means for requesting increased or decreased unit consumption in a given sequence as a function of units status and the sum of consumption relative to a target, each step of said sequence representing a condition of more than one unit and traversing said sequence between steps can involve requesting simultaneously increased unit consumption and decreased unit consumption; and means for determining the minimum on and off periods and the maximum off period of each unit in response to said request of said first means to provide a demand command status. - View Dependent Claims (21, 22, 23, 24, 25)
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26. A system for controlling a plurality of variable rate consuming units comprising:
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first means for requesting increased or decreased unit consumption in a given sequence as a function of units status and the sum of consumption relative to a target, each step in said sequence representing a condition of more than one unit; second means for determining the period of on and off times of said units in response to said request of said first means to provide a demand command status; third means for requesting an increased or decreased unit consumption as a function of time to provide a time command status; and fourth means for ORing the demand and time command decrease status and commanding decreased unit consumption. - View Dependent Claims (27, 28, 29)
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30. A control system for controlling a plurality of variable rate consuming units comprising:
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first means for comparing the sum of consumption of all of said units with a target; second means for comparing said sum with said target minus a differential of consumption of demand controllable loads; means for establishing a sequence of adding and shedding demand controllable units; means for determining the status of said demand controllable units; and means for traversing said sequence from said determined status position as a function of said first and second comparisons to produce consumption requested status. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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40. The control system according to claim 39 including means for measuring a non-consumption variable and wherein said traversing means traverses said sequence in response to said measuring means.
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41. The control system according to claim 40 wherein said traversing means traverses said sequence from the status position non-sequentially in response to said measuring means.
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42. The control system according to claim 40 wherein said traversing means traverses said sequence in sequence from a status selected in response to said measuring means.
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43. The control system according to claim 39 wherein said sequence optimizes the number of units on and total consumption relative to said target.
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44. A control system for a plurality of consuming units comprising
means for comparing the sum of consumption of all of said units with a window having an upper and a lower value; -
means for establishing a sequence of adding and shedding demand controllable units to increase or decrease said sum; means for determining the status of said demand controllable units; and means for traversing said sequence from said determined status position when said sum is outside said window. - View Dependent Claims (45, 46, 47, 48)
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49. A system for controlling a plurality of variable rate consuming units comprising:
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first means for commanding increased or decreased total units consumption in a given sequence as a function of units status and the sum of consumption relative to a target; second means for commanding decreased unit consumption as a function of time; and third means for commanding decreased unit consumption in response to a decrease command from said first or second means and for commanding increased consumption for lack of decrease command from both said first and second means. - View Dependent Claims (50, 51)
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Specification