Apparatus for detecting a current peak value and a voltage peak

Details Apparatus for detecting a current peak value and a voltage peak Apparatus for detecting a current peak value and a voltage peak

1981-06-26

1984-07-10

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Demand, excess, maximum or minimum

324 52, G01R 1916, G01R 3108

Patent

active

044595450

ABSTRACT:
An apparatus for detecting a voltage peak value and a current peak of value and for detecting the amount of time or phase angle deviation between the voltage peak of value and current peak point to thereby locate a fault in a power line system. A decision circuit detects a sampling number indicating the peak point. The output of the decision circuit is applied to counter circuits while the number of sampling times is counted according to a preset sampling period. The operation of the counter is stopped by an output signal from the decision circuit to thereby output a digital number representing how many sampling numbers correspond to the distance between the peak points of the voltage and current.

REFERENCES:
patent: 3931502 (1976-01-01), Kohlas
patent: 4281386 (1981-07-01), Kondow et al.

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