Method of switching hydro-electric unit from group power control

Details Method of switching hydro-electric unit from group power control Method of switching hydro-electric unit from group power control

1975-01-23

1976-08-10

Hohauser, Herman

Prime-mover dynamo plants

Electric control

Engine control

307 85, 307 93, 290 43, F03G 1300

Patent

active

039743934

ABSTRACT:
A method of switching a hydro-electric unit from the group power control into the individual power control duty is disclosed wherein control system, preferentially featuring an electrohydraulic controller, of the hydro-electric unit being switched into the individual control duty is not fed with the output voltage available from the common power pre-setter of all the hydro-electric units under group control, but with the output voltage available from the individual power pre-setter of the hydro-electric unit being switched into the individual power control duty. The voltages from the individual power pre-setter are compared with the output voltage from the common power pre-setter and the resulting voltage equal to the difference of the voltages being compared, is used to shape the signal for changing the setting of the individual power pre-setter, the value of the setting required to switch the hydro-electric unit into the individual control duty being selected so that the output voltages from both the common and the individual pre-setters will be approximately equal.

REFERENCES:
patent: 3219832 (1965-11-01), Avery
patent: 3222532 (1965-12-01), Oldenburg
patent: 3546472 (1970-12-01), Hoffman

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