IMPROVED POWER CONTROL OF A SET OF PHOTOVOLTAIC PANELS IN ORDER TO TAKE PART IN THE FREQUENCY ADJUSTMENT WITHOUT RESORTING TO A STORAGE MEANS

摘要

The invention relates to a method that makes it possible to set up a power reserve on a photovoltaic panel installation, which consists of controlling the power production of photovoltaic panels by adjusting the voltage that is applied to same and comprises the following consecutive steps: a) varying (S2) the voltage applied to the panels and measuring a corresponding variation in the power supplied by the panels, by consecutive voltage steps; b) identifying a maximum power supplied (MPP), in accordance with an identified voltage (V_MPP); and c) varying the voltage (S5, S12) once more in order to reach the power setpoint (P_RPP) that makes it possible to obtain the required reserve, in accordance with the frequency of the electricity transport network; and then the steps in parallel: d) measuring the frequency of the network and, at least if the frequency value is lower than a threshold value, adjusting the voltage in order to release all or part of the reserve according to the frequency deviation observed in relation to the nominal frequency (Δ f); and e) repeatedly measuring the power supplied (P) by the panels, and when said power diverges from the modulated power setpoint of the frequency deviation, beyond a predefined threshold, restarting steps a) to c).