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System for controlling power distribution to customer loads

  • US 4,419,666 A
  • Filed: 08/06/1982
  • Issued: 12/06/1983
  • Est. Priority Date: 07/02/1979
  • Status: Expired due to Fees
First Claim
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1. A system for permitting an electric power utility to control the distribution of its three-phase, AC high voltage power along its power lines from a plurality of substations to a plurality of customer loads arranged in groups, which comprises:

  • a master control station including first programmable digital data processor means and input/output devices under the control of an operator for generating data signals in response to group control command signals;

    a plurality of substation injection units in two-way communication with said master control station, each of said units located at a different one of said substations and having its own programmable digital data processor means, each of said substation injection units responsive to said data signals for generating pulse code signals for injection onto said power lines; and

    a plurality of remote receiver units each located at and connected to control one of said customer loads and responsive to a particular one of said pulse code signals for connecting or disconnecting its load from said power lines; and

    wherein said master control station includes;

    means for polling each of said substation injection units to obtain information pertaining to its status, possible alarm conditions, and analog or discrete data generated at the respective substation;

    means for transmitting and receiving serial binary block messages to and from each of said substation injection units, said block messages including substation injection unit address data, substation injection unit function commands and said data signals; and

    means for prioritizing and executing said group control commands.

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