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US 8,027,795 B2Granted
Load model generation for estimating a load value from a base load value in a system
AssigneePower Measurement Ltd.
InventorsJohn C. Van Gorp, Shaun M Hope, Peter Cowan, Matthew Stanlake
Life of this patent
Estimating the term…
Abstract
A method and system for establishing a load model (120) that utilizes a measurement from a second monitor (140) to estimate a value taken by a first monitor (150). A base load value associated with a load (160) is collected. The load model (120) is applied to the base load value, yielding an estimated load value. The estimated load value is representative of at least one measured load value for the load (160).
Claims16
A system comprising:
- a processor;
- a permanent monitor operably coupled to a load connected to an energy distribution system, wherein the permanent monitor produces base load values indicative of an energy-related parameter associated with the load and transmits the base load values to the processor, the base load values being collected over a period of time sufficient to capture an operational range of the load;
- a temporary monitor operably coupled to the load, wherein the temporary monitor produces, at substantially the same time as the permanent monitor, temporary load values indicative of the energy-related parameter or a different energy-related parameter associated with the load and transmits the temporary load values to the processor, the temporary load values being collected over the period of time without having to disconnect the load from the energy distribution system, and wherein each of the permanent monitor and the temporary monitor is configured to measure values of the energy distribution system to produce the base load values and the temporary load values, respectively, the temporary monitor being capable of monitoring (a) more advanced measurements of the value than the permanent monitor is capable of or (b) more accurate measurements of the value relative to the permanent monitor;
- wherein the processor generates at least one load model indicative of a relationship between the transmitted base load values and the transmitted temporary load values, wherein, responsive to the temporary monitor being disconnected from the load, (a) the permanent monitor produces a new base load value indicative of the energy-related parameter associated with the load and (b) the processor calculates an estimated load value based on the new base load value and the load model, wherein the load model incorporates known characteristics of the load provided by the manufacturer of the load, and wherein the processor determines a confidence interval for the estimated load value to determine an estimation range for the load model, the estimation range corresponding to a range within which the estimated load value approximates at least one of the temporary load values.
1 more element
A method comprising:
- establishing, using a processor, a load model that utilizes a measurement of an energy distribution system from a second monitor to estimate a value taken by a first monitor operably coupled to a load connected to the energy distribution system;
- collecting, using the processor, from the first monitor base load values indicative of an energy-related parameter associated with the load over a period of time sufficient to capture an operational range of the load;
- collecting, using the processor, from the second monitor temporary load values indicative of the energy-related parameter or a different energy-related parameter associated with the load over the period of time without having to disconnect the load from the energy distribution system, the second monitor being capable of monitoring (a) more advanced measurements than the permanent monitor is capable of or (b) more accurate measurements relative to the permanent monitor, the base load values and the temporary load values being produced at substantially the same time;
- responsive to the second monitor being disconnected from the load, collecting a new base load value indicative of the energy-related parameter associated with the load and calculating, using the processor, an estimated load value by applying the load model to the new base load value, wherein the load model incorporates known characteristics of the load provided by the manufacturer of the load;
- storing the estimated load value in a memory device coupled to the processor;
- and
- determining, using the processor, a confidence interval for the estimated load value to determine an estimation range for the load model, the estimation range corresponding to a range within which the estimated load value approximates at least one of the temporary load values.
4 more elements
A computer program product, comprising one or more non-transitory computer-readable media, wherein information embodied on the non-transitory computer-readable media is configured to cause a processor to implement a method comprising:
- establishing a load model that utilizes a measurement of an energy distribution system from a second monitor to estimate a value taken by a first monitor operably coupled to a load connected to the energy distribution system;
- collecting from the first monitor base load values indicative of an energy-related parameter associated with the load over a period of time sufficient to capture an operational range of the load;
- collecting from the second monitor temporary load values indicative of the energy-related parameter or a different energy-related parameter associated with the load over the period of time without having to disconnect the load from the energy distribution system, the second monitor being capable of monitoring (a) more advanced measurements than the permanent monitor is capable of or (b) more accurate measurements relative to the permanent monitor, the base load values and the temporary load values being produced at substantially the same time;
- responsive to the second monitor being disconnected from the load, collecting a new base load value indicative of the energy-related parameter associated with the load and calculating an estimated load value by applying the load model to the new base load value, wherein the load model incorporates known characteristics of the load provided by the manufacturer of the load;
- storing the estimated load value in a memory device;
- and
- determining a confidence interval for the estimated load value to determine an estimation range for the load model, the estimation range corresponding to a range within which the estimated load value approximates at least one of the temporary load values.
4 more elements
Dependencies are inferred from the claim text.