Patent ID: 8346400

Claim:
A method for power management in a photovoltaic installation equipped with a plurality of power control minimum units (PCMU), said method including carrying out an active power control comprising: establishing an active power reserve set_point for the photovoltaic installation; the active power reserve set_point being selected from among an economic optimization algorithm, a grid frequency control loop, external requirements, an installation power output variation rate control loop and a combination thereof; determining a first array of power control minimum units “PCMU” which operate without limiting active power of the photovoltaic installation; estimating the active power producible by the photovoltaic installation; and determining a second array of power control minimum units “PCMU” which operate so as to limit the active power of the photovoltaic installation at a certain value; where the limiting operation is established from the active power reserve set_point and from the estimation of producible active power.