Abstract: Adjusting and measuring method for a photovoltaic power plant comprising at least one photovoltaic string comprising solar panels connected in series and comprising at least one inverter configured to convert a DC voltage generated by the photovoltaic string into an AC voltage, the at least one inverter having a plurality of DC-voltage inputs, the method comprising the following steps: A. measuring a frequency f of an AC voltage generated by the photovoltaic power plant and computing a frequency variation ?f of the AC voltage with respect to a predetermined reference frequency fref such that: ?f=f?fref and computing a power variation ?P to be applied by the photovoltaic power plant based on the frequency variation, B.

Abstract: A method for determining a corrected current-voltage curve of an electrical system, the method including the following steps: obtaining a first current-voltage characteristic curve of the electrical system, by varying the voltage across its terminals at a first measurement rate, obtaining a second current-voltage characteristic curve of the electrical system, by varying the voltage across its terminals at a second measurement rate, different from the first rate, using a single notional capacitance to model an intrinsic stray effect to be corrected between an input voltage without the stray effect and the output voltage, determining a correction value representative of the stray effect and a step of determining a corrected current value on the basis of the determined correction value.

Abstract: A method for determining a corrected current-voltage curve of an electrical system, the method including the following steps: obtaining a first current-voltage characteristic curve of the electrical system, by varying the voltage across its terminals at a first measurement rate, obtaining a second current-voltage characteristic curve of the electrical system, by varying the voltage across its terminals at a second measurement rate, different from the first rate, using a single notional capacitance to model an intrinsic stray effect to be corrected between an input voltage without the stray effect and the output voltage, determining a correction value representative of the stray effect and a step of determining a corrected current value on the basis of the determined correction value.