Control method and system for an high voltage direct current sys

Details Control method and system for an high voltage direct current sys Control method and system for an high voltage direct current sys

1979-02-01

1981-04-21

Griffin, Donald A.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Plural converters

307 85, 307151, 363 35, H02J 336

Patent

active

042635179

ABSTRACT:
A HVDC system has two converter stations, each of which has two converters connected in cascade to operate as a rectifier or an inverter and the stations are connected through a d.c. power transmission line to each other and are connected to respective a.c. power sources through the a.c. power transmission lines. Each converter is controlled depending on the difference between a current reference for the HVDC system and an actual current flowing in the HVDC system when the converter operates as a rectifier, and controlled depending on the output of the constant margin angle control circuit when the converter operates as an inverter. When the converter operation condition is changed, i.e. another converter operates in addition to the converters in operation or the direction of power transmission in the HVDC system is changed, the current reference for the HVDC system is reduced depending on the d.c. voltage during a predetermined period.

REFERENCES:
patent: 3487286 (1969-12-01), Persson
patent: 3883790 (1975-05-01), Hammarlund
patent: 3906335 (1975-09-01), Watanabe
patent: 3962625 (1976-06-01), Juhlin
patent: 4173780 (1979-11-01), Hausler

Affiliated with

Also associated with

Rating

Control method and system for an high voltage direct current sys does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Control method and system for an high voltage direct current sys, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control method and system for an high voltage direct current sys will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-559671