Systems and methods for dynamic rating of power grids

A method for dynamic rating of a power grid comprising a plurality of nodes coupled by a plurality of lines, the method comprising:

• receiving, by processing circuitry of a central or zone controller, signals from a plurality of terminal units indicative of voltage phasors and current phasors of the nodes in a zone of multiple zones,
• determining, by the processing circuitry and based on the voltage phasors and the current phasors of the nodes in the zone, a dynamic thermal stability power rating for the plurality of lines, wherein the dynamic thermal stability power rating is indicative of a maximum rating current and a maximum conductor temperature supported by the plurality of lines,
• determining, by the processing circuitry and based on the voltage phasors and the current phasors of the nodes in the zone, a dynamic angular stability power rating for the nodes, wherein the dynamic angular stability power rating is indicative of a maximum transmission power corresponding to an angular stability margin for the nodes,
• determining, by the processing circuitry and based on the voltage phasors and the current phasors of the nodes, a dynamic voltage stability power rating for the plurality of nodes in each of the multiple zones,
• determining, by the processing circuitry and based on the dynamic thermal stability power rating, the dynamic angular stability power rating, and the dynamic voltage stability power rating, a dynamic system rating for all of the multiple zones within the power grid,
• controlling, by the processing circuitry, the power grid in response to the dynamic system rating,
• based on the dynamic thermal stability power rating, the dynamic angular stability power rating, and the dynamic voltage stability power rating, in each operating interval, learning, by the processing circuitry, a dynamic system rating of lines in each zone of the power grid, and
• based on the dynamic thermal stability power rating, the dynamic angular stability power rating, and the dynamic voltage stability power rating, for a future operating interval, predicting, by the processing circuitry, the dynamic system rating of plurality of lines in each zone of the power grid.

A non-transitory computer-readable medium storing instructions that, when executed by processing circuitry of a central or zone controller, cause execution of instructions comprising:

• receiving signals from a plurality of terminal units indicative of voltage phasors and current phasors of nodes in a zone of multiple zones in a power grid,
• determining, based on the voltage phasors and the current phasors of the nodes in the zone, a dynamic thermal stability power rating for a plurality of lines, wherein the dynamic thermal stability power rating is indicative of a maximum rating current and a maximum conductor temperature supported by the plurality of lines,
• determining, based on the voltage phasors and the current phasors of the nodes in the zone, a dynamic angular stability power rating for the nodes, wherein the dynamic angular stability power rating is indicative of a maximum transmission power corresponding to an angular stability margin for the nodes,
• determining, based on the voltage phasors and the current phasors of the nodes, a dynamic voltage stability power rating for a plurality of nodes in each of the multiple zones,
• determining, based on the dynamic thermal stability power rating, the dynamic angular stability power rating, and the dynamic voltage stability power rating, a dynamic system rating for all of the multiple zones within a power grid,
• controlling the power grid in response to the dynamic system rating,
• based on the dynamic thermal stability power rating, the dynamic angular stability power rating, and the dynamic voltage stability power rating, in each operating interval, learning a dynamic system rating of lines in each of the multiple zones, and
• based on the dynamic thermal stability power rating, the dynamic angular stability power rating, and the dynamic voltage stability power rating, for a future operating interval, predicting the dynamic system rating of plurality of lines in each of the multiple zones.