Patent US3789201A successfully refreshed from Google Patents.
US3789201A
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Simulated load forecast and control apparatus
Assignee: Butler Manufacturing Co
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Filing: 1972-05-18
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Granted: 1974-01-29
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Expires: 1992-05-18
Abstract
Abstract In order to observe the effect of adding or shedding a load upon the total energy consumed during a billing period and, if desired, to effect such an add or shed operation, simulation and control apparatus is provided for use in conjunction with a power demand monitor and limiter. The power demand monitor and limiter, which is prior art apparatus, contains at all times an account of the time consumed during a billing period, the energy consumed to that time, and the current rate of energy consumption. This information is utilized by an incremental control unit which also accepts information representing the size of each individual load in a system, which information is utilized to affect the rate of oscillation of a simulated load oscillator. When a forecast is to be made of the effect of adding or shedding a load, the information from the power demand monitor and limiter is utilized to simulate the remaining time in the period at a very fast rate while simultaneously simulating the effect of adding or shedding the load contemplated in exactly the same accelerated rate. The forecast results are contained in an accumulator which may drive a display unit for the benefit of an operator observing the simulation. Additionally, set point switches and count comparison logic provides the optional ability to actually add or shed the load at an optimum point in time during the billing period to avoid exceeding the consumption limit while approaching such limit as closely as possible.
Inventors
- 👤 E Carpenter
- 👤 W Leyde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:49
CPC Classifications
H; H02; H02J; H02J3/00; H02J3/003; G; G06; G06F; G06F30/00; G06F30/20; G06F2119/00; G06F2119/06
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
197 words
In a system for determining the total power consumption of an electrical load during a predetermined demand interval, which system includes means for recording the total time consumed to a selected time during the demand interval, the total electrical energy consumed during the corresponding time period, and the actual rate of electrical energy consumption at the selected time; means for forecasting the total energy consumption during the demand interval comprising: a. means for simulating the time remaining in the demand interval at an accelerated rate; b. means for developing simulated impulses representative of the rate at which power will be consumed during said time remaining of the demand interval, which simulated impulses are developed at said accelerated rate and c. means for accumulating said simulated impulses, the accumulated total of said simulated impulses during said accelerated time remaining in the demand interval being representative of the energy consumption during the remainder of the demand interval; and d. means for recording the algebraic sum of said accumulated total of said simulated pulses and the total electrical energy consumed during said corresponding time period, said algebraic sum being representative of the forecast energy consumption for the entire demand interval.
Claim 2
Dependent Claim
197 words
In a system for determining the total power consumption of an electrical load during a predetermined demand interval, which system includes means for recording the total time consumed to a selected time during the demand interval, the total electrical energy consumed during the corresponding time period, and the actual rate of electrical energy consumption at the selected time; means for forecasting the total energy consumption during the demand interval comprising: a. means for simulating the time remaining in the demand interval at an accelerated rate; b. means for developing simulated impulses representative of the rate at which power will be consumed during said time remaining of the demand interval, which simulated impulses are developed at said accelerated rate and c. means for accumulating said simulated impulses, the accumulated total of said simulated impulses during said accelerated time remaining in the demand interval being representative of the energy consumption during the remainder of the demand interval; and d. means for recording the algebraic sum of said accumulated total of said simulated pulses and the total electrical energy consumed during said corresponding time period, said algebraic sum being representative of the forecast energy consumption for the entire demand interval.
Claim 3
Dependent Claim
36 words
The system of claim 1 including a rate modifier, in which said simulated pulses represent the algebraic sum of said actual rate and said rate modifier simulating the effect of adding or shedding a load portion.
Claim 4
Dependent Claim
40 words
The system of claim 2 in which said simulated pulses are developed in a simulated load oscillator functioning at a rate determined by the total simulated load, said simulated pulses accumulating for the accelerated simulated remainder of the demand interval.
Claim 5
Dependent Claim
48 words
The system of claim 3 in which said accumulating means is an accumulator, said system further including means for transferring the recorded energy actually consumed to the selected time and means for incrementing said accumulator with said simulated pulses for the accelerated simulated remainder of the demand interval.
Claim 6
Dependent Claim
29 words
The system of claim 4 which further includes means for digitally displaying the total count in said accumulator at the end of the simulated remainder of the demand interval.
Claim 7
Dependent Claim
68 words
The system of claim 4 which further includes means for entering a predetermined count representing the total energy consumption desired for the demand period; means for comparing said predetermined count to the total count in said accumulator at the end of the simulated remainder of the demand interval; and means for providing an indication of the quantitative relationship between the predetermined count and the count in the accumulator.
Claim 8
Dependent Claim
43 words
The system of claim 6 which further includes means responsive to the polarity of the difference between the predetermined count and the count in the accumulator at the end of a simulation for issuing a command to alter the rate of energy consumption.
Claim 9
Dependent Claim
45 words
The system of claim 7 in which means are provided to inhibit alteration of the rate of energy consumption until the magnitude of the difference between the predetermined count and the count in the accumulator at the end of a simulation falls within predetermined limits.
Claim 10
Independent Claim
106 words
A system for forecasting the total power consumption by an electrical load during a demand interval comprising: a. means for simulating the total time of the predetermined demand interval at an accelerated rate by compressing said demand interval; b. means for developing simulated pulses representative of the rate at which power will be consumed if the electrical load is altered, which simulated impulses are developed at said accelerated rate in said compressed demand interval; and c. means for accumulating said simulated pulses during said compressed demand interval, resulting in an accumulated total, which accumulated total is representative of the forecast energy consumption for the demand interval.
Claim 11
Independent Claim
106 words
A system for forecasting the total power consumption by an electrical load during a demand interval comprising: a. means for simulating the total time of the predetermined demand interval at an accelerated rate by compressing said demand interval; b. means for developing simulated pulses representative of the rate at which power will be consumed if the electrical load is altered, which simulated impulses are developed at said accelerated rate in said compressed demand interval; and c. means for accumulating said simulated pulses during said compressed demand interval, resulting in an accumulated total, which accumulated total is representative of the forecast energy consumption for the demand interval.
Claim 12
Dependent Claim
24 words
A system in accordance with claim 9, including means for recording said accumulated total representative of the forecast energy consumption for the demand interval.
Claim 13
Dependent Claim
21 words
A system in accordance with claim 10, including means for digitally displaying the recorded forecast energy consumption for the demand interval.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |