Electric power system control with packet stream redundancy and correction
AssigneeSchweitzer Engineering Laboratories, Inc.
InventorsMichael J. Holland, Phillip J. Stoaks
Life of this patent
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Abstract
Electric power delivery system monitoring, control, and protection using a transmission of a first stream of power system information and a second stream of power system information, where the second stream is a lower-resolution cumulation of the information in the first stream is disclosed herein. The power system information may be in the form of energy packets. When a packet from the first stream is lost, the receiving device may use the second stream to calculate a value for the lost packet from the first stream. The calculated value of the lost packet may be used to correct or remediate for a protection or control operation that was previously determined.
Claims13
A method to control an electric power delivery apparatus, comprising:
- obtaining electrical signals from the electric power delivery apparatus using a data acquisition subsystem;
- calculating electrical attributes of the electric power delivery apparatus using the electrical signals;
- transmitting a first stream of packets of electrical attributes at a first resolution;
- transmitting a second stream of packets of electrical attributes at a second resolution, wherein the second resolution is lower than the first resolution;
- receiving the first stream of packets of electrical attributes by a control device;
- determining a control action of the electric power delivery apparatus using the first stream of packets of electrical attributes;
- affecting the control action for the electric power delivery apparatus;
- receiving the second stream of packets of electrical attributes by the control device;
- determining a missing packet from the first stream of electrical attributes using the second stream of packets of electrical attributes;
- upon determination of the missing packet, determine a contingency control action for the electric power delivery apparatus;
- and
- affecting the contingency control action for the electric power delivery apparatus.
Dependencies are inferred from the claim text.