Electricity: measuring and testing – Impedance – admittance or other quantities representative of... – With auxiliary means to condition stimulus/response signals
Patent
1994-05-24
1996-05-07
Regan, Maura K.
Electricity: measuring and testing
Impedance, admittance or other quantities representative of...
With auxiliary means to condition stimulus/response signals
364578, G01R 2702, G06G 748
Patent
active
055149693
ABSTRACT:
A power monitoring instrument evaluates and displays the source impedance, load impedance, and distribution system impedance of an alternating current power system using voltage and current measurements taken at a source and load of the power system. The power monitoring instrument and associated voltage and current pods for coupling to voltage probes and current clamps incorporate unique safety features to minimize operator exposure to high-voltage. The measurements are performed noninvasively without disconnecting elements of the power system. Evaluation of impedances takes advantage of incidental variations in the load characteristics.
REFERENCES:
patent: 3534400 (1970-10-01), Dahlin
patent: 3832533 (1974-08-01), Carlson et al.
patent: 3883724 (1975-05-01), Pradhan et al.
patent: 5298853 (1994-03-01), Ryba
Osmolovskiy et al, Telecommunications and Radio Engineering vol. 27/88 May 1973.
Gibbs et al. Power Plant Training Simulator Jul. 1976.
Galanos et al. IEEE Power Engineering Winter Meeting Feb. 1977.
Moore Robert E.
Nitz Frederic W.
Regan Maura K.
Reliable Power Meters Inc.
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