System and method for controlling a harmonic filter bank of a renewable energy power system

A system for controlling a renewable energy power system having a plurality of renewable energy assets connected to a power grid, the system comprising:

• a controller configured to perform a plurality of operations, the plurality of operations comprising:
• receiving at least one of an actual power output of the renewable energy power system or a number of the plurality of renewable energy assets that are online;
• determining an actual number of active harmonic filter banks in operation based on at least one of the actual power output of the renewable energy power system or the number of the plurality of renewable energy assets that are online;
• and
• adjusting or maintaining the actual number of active harmonic filter banks in operation to maintain steady state reactive power capabilities of the renewable energy power system to meet reactive power-active power curve requirements for the renewable energy power system,
• wherein adjusting or maintaining the actual number of active harmonic filter banks in operation further comprises:
• comparing a number of required active harmonic filter banks in operation with the actual number of active harmonic filter banks in operation;
• and
• in response to the number of required active harmonic filter banks in operation is lower than the actual number of active harmonic filter banks in operation, generating a second pulse signal for the controller to trip at least one additional harmonic filter bank to increase the actual number of active harmonic filter banks in operation.

A system for controlling a renewable energy power system having a plurality of renewable energy assets connected to a power grid, the system comprising:

• a controller configured to perform a plurality of operations, the plurality of operations comprising:
• receiving at least one of an actual power output of the renewable energy power system or a number of the plurality of renewable energy assets that are online;
• determining an actual number of active harmonic filter banks in operation based on at least one of the actual power output of the renewable energy power system or the number of the plurality of renewable energy assets that are online;
• receiving, via the controller, a number of closed harmonic filter banks;
• and
• adjusting or maintaining the actual number of active harmonic filter banks in operation to maintain steady state reactive power capabilities of the renewable energy power system to meet reactive power-active power curve requirements for the renewable energy power system,
• wherein adjusting or maintaining the actual number of active harmonic filter banks in operation further comprises:
• comparing a number of required active harmonic filter banks in operation with the actual number of active harmonic filter banks in operation;
• and
• in response to the number of required active harmonic filter banks in operation is higher than the number of closed harmonic filter banks, generating a first pulse signal for the controller to close at least one additional harmonic filter bank to increase the actual number of active harmonic filter banks in operation.