DISTRIBUTION LINE CARRIER RECEPTION METHOD AND ITS DEVICE

PURPOSE:To provide the distribution line carrier reception method being able to detect stably a carrier without resetting of a threshold level against fluctuation of harmonic noise of a commercial frequency in a distribution system. CONSTITUTION:A 1st comparator circuit 11 compares the output of an...

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Bibliographic Details
Main Author MITANI SHIGEO
Format Patent
LanguageEnglish
Published 28.01.1994
Edition5
Subjects
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
GENERATION
SYSTEMS FOR STORING ELECTRIC ENERGY
TRANSMISSION
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Summary:PURPOSE:To provide the distribution line carrier reception method being able to detect stably a carrier without resetting of a threshold level against fluctuation of harmonic noise of a commercial frequency in a distribution system. CONSTITUTION:A 1st comparator circuit 11 compares the output of an integration circuit 4 with a 1st reference value to extract its minimum value and a 2nd reference value B2 is generated based on an output and a 2nd comparator circuit 6 compares the output of the integration circuit 4 with the 2nd reference value B2 to detect a carrier, then even when the harmonic level of a commercial frequency is fluctuated, the 2nd reference value B2 is automatically set again in following to the fluctuation, then mis-detection of the carrier is avoided and the carrier is stably detected.
Bibliography:Application Number: JP19920173555