Method of controlling a tap changer of a transformer

Details Method of controlling a tap changer of a transformer Method of controlling a tap changer of a transformer

1996-07-29

1998-10-13

Masih, Karen

Electricity: motive power systems

Automatic and/or with time-delay means

Electrical conditions in circuit other than controlled motor...

364483, 323355, 323260, G05B 500

Patent

active

058217169

ABSTRACT:
A tap-changer transformer operated by the step-by-step principle in which its motor drive receives a signal to raise or lower the tap, has a voltage regulator in which the switching delay times and sensitivity values are freed matrix-like the respective tap changes. The actual voltage value of the transformer is compared with the preselected voltage setpoint and, based upon the control deviation, a value pair of delay and sensitivity are read out. This allows asymmetric response of the system as contrasted with the symmetrical response required by earlier systems.

REFERENCES:
patent: 3725771 (1973-04-01), Gilmore
patent: 4916377 (1990-04-01), Terada et al.
patent: 5602462 (1997-02-01), Stich et al.

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