Abstract: Validation of solar altitude-dependent measured values of several measurement channels. Measured values of the measurement channels that take the solar altitude into consideration are stored. Stored ratios of the stored measured values for all solar altitudes are calculated and stored. An expected ratio is determined by calculation of a frequency distribution over all stored ratios A current ratio of a currently measured measured value to the current measured values of the other measurement channels are calculated The currently measured measured values are validated. If the expected ratio corresponds to the stored ratio and the stored ratio corresponds to the currently ratio, the current measured value is valid. If the expected ratio corresponds to the stored ratio and the stored ratio deviates from the current ratio, a disturbance is present. If the expected ratio deviates from the stored ratio, the validity for this measured value is not evaluated.

Abstract: A method for detecting the degree of soiling of PV modules of a string includes the following steps: determination of the deviations of the string power output values from a calculated reference value over the last year; calculation of a historical trend line from the deviations; determination of a maximum difference between the trend line and the deviations; calculation of final deviations of the power output values through subtraction of the maximum difference from the trend line; and determination of the degree of soiling through subtraction of the final deviations from the deviations.

Abstract: The invention relates to a system for the dynamic regulation of a regenerative energy generation installation comprising a plurality of energy generation units. The system has a signal input for receiving a pre-determined set value, a measuring device for measuring an actual value on an output of the energy generation installation, and a regulating device for regulating the energy generation units based on the set value and the measured actual value.

Abstract: A method for detecting the degree of soiling of PV modules of a string comprises the following steps: determination of the deviations of the string power output values from a calculated reference value over the last year; calculation of a historical trend line from the deviations; determination of a maximum difference between the trend line and the deviations; calculation of final deviations of the power output values through subtraction of the maximum difference from the trend line; and determination of the degree of soiling through subtraction of the final deviations from the deviations.

Abstract: A method for the validation of solar altitude-dependent measured values of several measurement channels (3) is disclosed. Measured values of the measurement channels that take the solar altitude into consideration are stored; Stored ratios (201) of the stored measured values (106) for all solar altitudes are calculated and stored (200); an expected ratio (301) is determined (300) by calculation of a frequency distribution over all stored ratios (201); a current ratio of a currently measured measured value to the current measured values of the other measurement channels (3) are calculated (400); and the currently measured measured values are validated (5). If the expected ratio (301) corresponds to the stored ratio (201) and the stored ratio (201) corresponds to the currently ratio, the current measured value is valid (506). If the expected ratio (301) corresponds to the stored ratio (201) and the stored ratio (201) deviates from the current ratio, a disturbance is present (505).

Abstract: The invention relates to a system for the dynamic regulation of a regenerative energy generation installation comprising a plurality of energy generation units. Said system has a signal input for receiving a pre-determined set value, a measuring device for measuring an actual value on an output of the energy generation installation, and a regulating device for regulating the energy generation units based on the set value and the measured actual value.