Method and System for Providing Power Factor Correction in a Power Distribution System
First Claim
1. A device for providing power factor correction of a low voltage subnet that includes a low voltage feeder line that is connected to one or more low voltage power supply lines that supply power to one or more customer premises, comprising:
- a power factor measurement module configured to measure power parameters for determining a power factor of the power traversing the low voltage subnet;
a power factor correction assembly configured to vary a capacitance connected to the low voltage feeder of the low voltage subnet;
a controller in communication with said power factor measurement assembly and said power factor correction assembly; and
wherein said controller is configured to cause said power factor correction assembly to change the capacitance based on a determined power factor.
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Accused Products
Abstract
A device for providing power factor correction of a low voltage subnet that includes a low voltage feeder line that is connected to one or more low voltage power supply lines that supply power to one or more customer premises is provided. In one embodiment, the device includes a power factor measurement module configured to measure power parameters for determining a power factor of the power traversing the low voltage subnet; a power factor correction assembly configured to vary a capacitance connected to the low voltage feeder of the low voltage subnet; a controller in communication with the power factor measurement assembly and the power factor correction assembly. The controller may be configured to cause the power factor correction assembly to change the capacitance based on the determined power factor. The controller may form part of a power line communication device configured to provide communications to the one or more customer premises.
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Citations
36 Claims
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1. A device for providing power factor correction of a low voltage subnet that includes a low voltage feeder line that is connected to one or more low voltage power supply lines that supply power to one or more customer premises, comprising:
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a power factor measurement module configured to measure power parameters for determining a power factor of the power traversing the low voltage subnet; a power factor correction assembly configured to vary a capacitance connected to the low voltage feeder of the low voltage subnet; a controller in communication with said power factor measurement assembly and said power factor correction assembly; and wherein said controller is configured to cause said power factor correction assembly to change the capacitance based on a determined power factor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of providing power factor correction of a low voltage subnet that includes a low voltage feeder line that is connected to one or more low voltage power supply lines that supply power to one or more customer premises, comprising:
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determining a power factor of the power traversing the low voltage feeder; determining if the power factor is below a threshold power factor; if the power factor is below a threshold power factor, changing a capacitance connected to the low voltage feeder; and if the power factor is not below a threshold power factor, not changing the capacitance connected to the low voltage feeder. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A system for providing power factor correction to a power distribution system that includes a plurality of distribution transformers connected on a first side to a medium voltage power line and connected on a second side to one of a plurality of low voltage power line subnets that each includes one or more low voltage power supply lines supplying power to one or more customer premises, the system comprising:
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a plurality of correction assemblies comprising; a first capacitance connected to one of the plurality low voltage subnets; a first switch configured to vary said first capacitance; a first voltage sensor device configured to be connected to the voltage subnet; a first current sensor device configured to be connected the low voltage subnet; and a first controller in communication with said switch and configured to receive current data from said first current sensor device and receive voltage data from said first voltage sensor device; wherein said first controller is configured to determine a power factor based on said current data and said voltage data; and wherein said first controller is configured to operate said first switch to vary said first capacitance based on said determined power factor. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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Specification