Power line communication without line couplers
First Claim
1. A system comprising:
- a power line communication (PLC) modem electrically connected to a transmission medium configured to transmit a medium or high voltage, a voltage divider electrically connected to the transmission medium and configured to receive medium or high voltage power from the transmission medium and deliver power to the PLC modem;
wherein the PLC modem is electrically connected to the transmission medium without a line coupler, andwherein the PLC modem is electrically connected to the transmission medium without electrical isolation between the PLC modem and the transmission medium.
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Accused Products
Abstract
A disclosed PLC system includes a PLC modem electrically connected to a transmission medium that transmits or carries medium or high voltage without electrical isolation. The PLC system further includes a voltage divider that draws power from the transmission medium to the PLC modem, thereby eliminating a need of a separate power source for operating the PLC modem. Since the PLC modem is electrically connected to the transmission, the PLC modem or communication connections of the PLC modem may be located at a same potential level as the transmission medium and thus the PLC modem does not see a surge during a surge event occurs in the transmission medium. Therefore, the disclosed PLC system eliminates the use of a line coupler and a surge protection component for providing high-voltage isolation and surge protection to the PLC modem.
9 Citations
18 Claims
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1. A system comprising:
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a power line communication (PLC) modem electrically connected to a transmission medium configured to transmit a medium or high voltage, a voltage divider electrically connected to the transmission medium and configured to receive medium or high voltage power from the transmission medium and deliver power to the PLC modem; wherein the PLC modem is electrically connected to the transmission medium without a line coupler, and wherein the PLC modem is electrically connected to the transmission medium without electrical isolation between the PLC modem and the transmission medium. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A device comprising:
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a power line communication (PLC) modem configured to transmit or receive signals over a transmission medium configured to transmit a medium or high voltage, the PLC modem being connected to the transmission medium without a line coupler, the PLC modem being galvanically connected to the transmission medium without electrical isolation between the PLC modem and the transmission medium for high voltage isolation and surge protection; and a voltage divider connected to the transmission medium and configured to receive medium or high voltage AC (alternating current) power from the transmission medium and deliver DC (direct current) power to the PLC modem. - View Dependent Claims (16, 17)
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18. A method comprising:
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electrically connecting communication connections of a power line communication (PLC) modem to a transmission medium configured to transmit a medium or high voltage without grounding the PLC modem, the PLC modem being connected to the transmission medium without a line coupler, the PLC modem being directly electrically connected to the transmission medium without electrical isolation between the PLC modem and the transmission medium; and connecting a voltage divider to the transmission medium to deliver power from the transmission medium to the PLC modem.
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Specification