Power angle relay to measure and respond to the power angle of a

Details Power angle relay to measure and respond to the power angle of a Power angle relay to measure and respond to the power angle of a

1978-08-07

1980-10-21

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With rotor

361 20, G01R 3100, H02H 706

Patent

active

042296943

ABSTRACT:
A power angle relay to measure the power angle of a synchronous alternator. The power angle relay receives a reference voltage signal corresponding to a fixed point on a reference voltage waveform (usually a zero crossing) from some point in the power system to which the alternator is normally synchronized and an electric signal representative of the angular position of the shaft of the synchronous alternator and is operable to combine the two to provide an indication representative of the power angle between the direct axis of the synchronous alternator and said fixed point.

REFERENCES:
Power Angle Relay; Apr. 1978; Wiln-Otte, Inc., 29 Highgate Rd., Wayland, Mass. 01778.
Prewett, J. N.; "Method of Measuring . . . "; Proc. of the I.E.E.; Part C; Apr. 1958; pp. 605-608.

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