System and method for controlling a power generating facility

A system for controlling a power generating facility, the system comprising:

• a plurality of power generating assets coupled to an electrical grid;
• and
• a facility-level controller communicatively coupled to the plurality of power generating assets and to the electrical grid, the facility-level controller comprising at least one processor configured to perform a plurality of operations, the plurality of operations comprising:
• receiving a reactive power demand signal from the electrical grid;
• determining a reactive-power-delivery coefficient for each of the power generating assets comprising at least one of a reactive-power-generation coefficient and a reactive-power-transmission coefficient, wherein the reactive-power-delivery coefficient is indicative of an impact on an active power production capability of each of the power generating assets due to an increase in an amount of reactive power delivered to a point of interconnect (POI) for the power generating facility, wherein determining the reactive-power delivery coefficient further comprises:
• determining an operating state of each of the power generating assets, the operating state defining at least one of an active power production, a reactive power production, a voltage setpoint, and an operating temperature for each of the power generating assets;
• and
• determining the reactive-power-generation coefficient for each of the power generating assets, wherein the reactive-power-generation coefficient is indicative of a reduction in kilowatts of the active power production per unit of increased reactive power production for each power generating asset at the determined operating state;
• determining a portion of the reactive power demand signal to be satisfied by each of the plurality of power generating assets based on the reactive-power-delivery coefficient for each of the power generating assets, wherein the portion of the reactive power demand signal satisfied by at least one power generating asset is greater than the portion satisfied by at least one additional power generating asset;
• generating a reactive power setpoint command for each of the power generating assets;
• and
• transmitting the reactive power setpoint commands to each of the plurality of power generating assets so as to control a reactive power output of each of the plurality of power generating assets.