METHOD FOR EXTRACTION OF ADDED ELECTRICAL VALUE

摘要

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