Automatic assessment of electrical unbalance on three-phase loads
AssigneeSchneider Electric USA, Inc.
InventorJon A. Bickel
Life of this patent
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Abstract
Method and system for assessing and managing an electrical unbalance condition associated with a three-phase electrical system. An Intelligent Electronic Device (IED) coupled to the load acquires energy-related signals associated with the electrical system. A processor is configured to characterize electrical unbalance between a plurality of conductors analyze data associated with the characterization to identify electrical unbalance across the plurality of conductors, and determine the extent of the contribution of the electrical source(s), and the extent of the contribution of the load(s) in the electrical system, to the identified electrical unbalance condition.
Claims28
A method of assessing and managing an electrical unbalance condition associated with a three-phase electrical system under analysis, the method comprising:
- acquiring, by at least one Intelligent Electronic Device (IED) of the electrical system, energy-related signals associated with the electrical system, the energy-related signals comprising a plurality of measurements taken over time from a plurality of conductors;
- processing the energy-related signals acquired by the at least one IED to construct a characterization of an electrical unbalance between the plurality of conductors based on the energy-related signals;
- analyzing data associated with the characterization to identify the electrical unbalance across the plurality of conductors;
- and
- determining the extent of contribution of one or more electrical sources, and the extent of contribution of one or more loads in the electrical system, to the identified electrical unbalance condition.
A system for assessing and managing an electrical unbalance condition associated with a three-phase electrical system under analysis, the system comprising:
- at least one Intelligent Electronic Device (IED) communicatively coupled to the three-phase load of the electrical system, the IED configured to acquire energy-related signals associated with the electrical system, the energy-related signals comprising a plurality of measurements taken over time from a plurality of conductors;
- a processor receiving and responsive to the energy-related signals acquired by the at least one IED;
- and
- a memory storing processor-executable instructions that, when executed, configure the processor to:
- construct a characterization of an electrical unbalance between the plurality of conductors based on the energy-related signals;
- analyze data associated with the characterization to identify the electrical unbalance across the plurality of conductors;
- and
- determine the extent of contribution of one or more electrical sources, and the extent of contribution of one or more loads in the electrical system, to the identified electrical unbalance condition.
Dependencies are inferred from the claim text.