REGELVERFAHREN FUER EINE ZWEI DREHSTROMNETZE VERBINDENDE HOCHSPANNUNGSGLEICHSTROMUEBERTRAGUNG.

摘要

The system includes, between two ac power supplies, a high voltage dc transmission system with converters and compensating elements, also two transformers with stepping switches. The transmission system is controlled to maintain the main and reactive loading using fixed and switched capacitors and/or inductances to obtain optimum operating points, using the maximum permitted stepping of the transformers. The ratio of the primary currents of both transformers is determined by a specified formula. The formula is combined with a further formula giving the d.c. current which ensures that operating conditions of the a.c. supplies are within the required levels. Incorporated in the formula are the transformer ratios, their primary current ratios, also the number of rectifier bridges incorporated and the control, quenching and overlapping angles.