Electrical transmission or interconnection systems – Plural load circuit systems – Plural sources of supply
Patent
1989-08-03
1991-01-08
Pellinen, A. D.
Electrical transmission or interconnection systems
Plural load circuit systems
Plural sources of supply
307 19, 307 83, 323211, H02J 334
Patent
active
049838563
ABSTRACT:
The present disclosure describes a method and a system for interconnecting a first and a second three-phase alternating electric networks. The system comprises a first transformer having secondary windings for producing a first and a second secondary three-phase voltages, each phase of the first secondary voltage being out of phase with respect to one of the phases of the second three-phase voltage by a first angle; a second transformer having secondary windings for producing a third and a fourth secondary, three-phase voltages, each phase of the third secondary voltage being out of phase with respect to one of the phases of said fourth voltage by a second angle different from said first angle; a plurality of variable reactive impedances for establishing between each phase of the first and second voltages and two phases of said third and fourth voltages, two single-phase interconnections of variable susceptances, respectively; and a regulator for operating the variable reactive impedances to vary the susceptances of the interconnections so as to establish a desired transfer of electric active power from one of the first and second networks to the other network while maintaining at a desired level an electric reactive power engaged in said transfer of active power.
REFERENCES:
patent: 4621198 (1986-11-01), Roberge et al.
Hydro-Quebec
Osborn David
Pellinen A. D.
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