Systems and methods for improving the accuracy of appliance level disaggregation in non-intrusive appliance load monitoring techniques
First Claim
1. A system for detecting individual appliance energy loads from a whole house composite load profile, comprising:
- a transitions generator, that receives the whole house composite load profile and identifies transitions within the whole house composite load profile;
a detector in selective communication with the transitions generator, that receives transitions from the transitions generator and determines a household specific appliance state machine for each appliance in the household, the household specific appliance state machine comprising transitions associated with different functions, if any, of the appliance, thereby modeling an inner mechanism of the appliance; and
a solver in selective communication with the detector, which receives as input all of the transitions identified by the transitions generator and the household specific state machines from the detector, and parses all transitions received from the detector as a whole, thereby assigning each transition to a household specific appliance state machine, and disaggregating the whole house composite load profile into individual appliance energy loads.
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Abstract
The present invention generally teaches systems and methods for creating appliance signatures based upon whole house composite load profiles. Methods may includes steps such as identifying primitive elements including transients and absolute steady state levels; clustering the primitive elements along multiple dimensions to form impulses; combining impulses to form simple bundles; combining simple bundles with each other or impulses to form complex bundles; and determining specific appliance signatures that substantially match the complex bundles. Methods may also include steps such as determining transitions within the whole house composite load profile; determining household specific appliance state machines for each appliance in the household; and disaggregating the whole house composite load profile into individual appliance energy loads by assigning the determined transitions to the determined household specific appliance state machines.
120 Citations
21 Claims
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1. A system for detecting individual appliance energy loads from a whole house composite load profile, comprising:
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a transitions generator, that receives the whole house composite load profile and identifies transitions within the whole house composite load profile; a detector in selective communication with the transitions generator, that receives transitions from the transitions generator and determines a household specific appliance state machine for each appliance in the household, the household specific appliance state machine comprising transitions associated with different functions, if any, of the appliance, thereby modeling an inner mechanism of the appliance; and a solver in selective communication with the detector, which receives as input all of the transitions identified by the transitions generator and the household specific state machines from the detector, and parses all transitions received from the detector as a whole, thereby assigning each transition to a household specific appliance state machine, and disaggregating the whole house composite load profile into individual appliance energy loads. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for creating an appliance signature based upon a whole house composite load profile, comprising:
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identifying primitive elements comprising transients and absolute steady state levels; combining primitive elements to form impulses, using multi-dimensional clustering to group primitive elements along multiple dimensions; combining impulses to form simple bundles; combining simple bundles with other simple bundles or with impulses to form complex bundles, the complex bundles combining simple bundles associated with different functions of an appliance; determining, based upon the complex bundles, specific appliance signatures that substantially match the complex bundles, and identifying the specific appliance signatures from the whole house composite load profile. - View Dependent Claims (8)
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9. A method for detecting individual appliance energy loads from a whole house composite load profile, comprising:
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determining transitions within the whole house composite load profile; determining household specific appliance state machines for each appliance in the household, the household specific appliance state machine comprising transitions associated with different functions, if any, of the appliance, the determined transitions being parsed together in order to model an inner mechanism of the appliance; disaggregating the whole house composite load profile into individual appliance energy loads by assigning each of the determined transitions to the determined household specific appliance state machines. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of incentivizing users to replace inefficient appliances with efficient appliances based upon energy usage data measured from the user'"'"'s specific inefficient appliances, comprising:
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determining an appliance load signature from the user'"'"'s specific appliance, determined from a whole house composite load signature, wherein such determination is based at least in part on; determining transitions within the whole house composite load profile; determining household specific appliance state machines for each appliance in the household, the household specific appliance state machine comprising transitions associated with different functions, if any, of the appliance, the determined transitions being parsed together in order to model an inner mechanism of the appliance; disaggregating the whole house composite load profile into individual appliance energy loads by assigning each of the determined transitions to the determined household specific appliance state machines; determining an appliance signature from an alternative appliance; presenting to the user the difference in energy usage and associated costs between the user'"'"'s specific appliance and the alternative appliance. - View Dependent Claims (19, 20, 21)
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Specification