High-voltage direct current transmission installation having a h

Details High-voltage direct current transmission installation having a h High-voltage direct current transmission installation having a h

1996-02-08

1997-12-23

Wong, Peter S.

Electric power conversion systems

Current conversion

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

363 37, 363 95, H02J 336, H02M 545, H02M 324

Patent

active

057012393

ABSTRACT:
An installation for transmission of electric power by means of high-voltage direct current has two converters (SRI, SRII), each of which is connected to an alternating-voltage network (NI, NII) and which are connected to each other through a dc connection (L). One converter (SRI) is controlled as a rectifier and another converter (SRII) is controlled as an inverter. One converter (SRI) is current-controlling and another converter (SRII) is voltage-controlling. The installation has means (VARC.sub.rect) adapted, at such a change of the control angle (.alpha..sub.rect) of the current-controlling converter (SRI) that the angle reaches a limit of a predetermined interval (.alpha..sub.max nom rect -.alpha..sub.min nom rect) to control, by means of the voltage-controlling converter (SRII), the direct voltage (Ud) of the transmission in such a way that said change is limited.

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Power Transmission By Direct Current, Springer-Verlag Berlin-Heidelberg-New York 1975 (Index).

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