Method and arrangement for controlling a high voltage d-c transm

Details Method and arrangement for controlling a high voltage d-c transm Method and arrangement for controlling a high voltage d-c transm

1988-08-11

1989-11-28

Wong, Peter S.

Electric power conversion systems

Current conversion

Including an a.c.-d.c.-a.c. converter

363 79, 363 87, 363 96, H02J 336

Patent

active

048841811

ABSTRACT:
In the rectifier station (GR), the reference d-c current (J.sub.w) is automatically formed from the differences of a reference current-dependent control angle function and the current controller-dependent control angle (A) on the rectifier side, where the actual d-c current (J.sub.d) is termined by the power-dependent bucking voltage in the inverter state (WR), and that in the latter the difference of the actual d-c current (J.sub.d) and a reference d-c current obtained from the reference power (P.sub.W) through division by the actual d-c voltage (U.sub.d) influences a controller which sets the reference d-c current for the voltage controller (UR) in the inverter station (WR).

REFERENCES:
patent: 4494179 (1985-01-01), Inokuchi et al.
patent: 4516198 (1985-05-01), Liss
patent: 4578743 (1986-03-01), Inokuchi et al.
patent: 4649466 (1987-03-01), Rogowsky
patent: 4685044 (1987-08-01), Weibelzahl et al.
patent: 4727467 (1988-02-01), Bendl et al.

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