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SYSTEM AND METHOD FOR SYNCHRONIZING AN AUXILIARY ELECTRICAL GENERATOR TO AN ELECTRICAL SYSTEM

  • US 20110115302A1
  • Filed: 01/25/2011
  • Published: 05/19/2011
  • Est. Priority Date: 08/21/2007
  • Status: Active Grant
First Claim
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1. An energy meter for measuring the delivery of electrical energy from an energy supplier to a consumer through an electric circuit, said meter comprising:

  • a meter module comprising;

    a plurality of sensors for sensing electrical parameters of lines of an electrical power distribution system;

    a plurality of analog-to-digital (ND) converters for receiving the sensed electrical parameters output from the plurality of sensors, the analog-to-digital converters being configured to convert the sensed electrical parameters to digital signals for processing by at least one digital signal processor;

    the at least one digital signal processor configured for receiving the digital signals from the A/D converters to perform calculations required to determine power usage of a load and for controlling the overall operations of the meter;

    a communication device for interacting with a user and for communicating events, alarms and instructions to the user;

    a display for providing visual indications to the user;

    a synchronization module comprising control logic operative to output a first control signal to adjust a frequency of the auxiliary generator, said control logic being further operative to determine when a phase angle difference between a voltage phase of the auxiliary generator and a corresponding voltage phase of the electrical distribution system are within a defined tolerance; and

    control means for outputting a second control signal to synchronize said auxiliary generator with said three-phase power electrical system upon determining that said phase angle difference is within said defined tolerance.

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