FIELD: electricity.
SUBSTANCE: according to this method for extraction of added electrical value the electrical value is converted into digital signal by means of analogue-to-digital conversion and phantom digital signal free from added electrical value is generated. Then the above phantom digital signal is converted into continuous signal by means of digital-to-analogue conversion, this continuous signal is subtracted from the electrical value and thus additional analogue signal is formed. Thereupon by analogue-to-digital conversion of the additional analogue signal readings of the extracted added value are obtained.
EFFECT: improved accuracy for extraction of the added electrical value against other prevailing components.
4 cl, 1 dwg
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