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A power flow controller seeks to inject a voltage V.sub.ser on a transmission path between a first electrical area and a second electrical area, in order to cause a desired power flow into the second electrical area. The power flow controller (20) includes a series transformer (40), a regulating tra

A power flow controller seeks to inject a voltage V.sub.ser on a transmission path between a first electrical area and a second electrical area, in order to cause a desired power flow into the second electrical area. The power flow controller (20) includes a series transformer (40), a regulating transformer (44), a rotary phase shifting transformer network (44), and a control system (46). The rotary phase shifting transformer network (44) includes a first rotary phase shifting transformer (102.sub.1) and a second rotary phase shifting transformer (102.sub.2). The first rotary phase shifting transformer and the second rotary phase shifting transformer have first terminals (windings of one of either rotors or stators) connected in parallel to a regulating winding 62) of the regulation transformer. Second terminals (windings of the other of rotors or stators) are connected in series with an excited winding (52) of the series transformer. The control system applies control signals to the first rotary phase shifting transformer and the second rotary phase shifting transformer to obtain desired phase angles .theta..sub.E1, .theta..sub.E2 between the rotor (110) and stator (112) of each transformer, and thereby achieve an effective phase shift .theta..sub.PFC and a voltage magnitude ratio T.sub.PFC between the first electrical area and the second electrical area.

대표청구항 ▼

[ What is claimed is:] [1.] A power flow controller connected on a transmission path between a first electrical area and a second electrical area, a first side of the transmission path being connected to the first electrical area, the apparatus comprising:a first rotary phase shifting transformer ha

[ What is claimed is:] [1.] A power flow controller connected on a transmission path between a first electrical area and a second electrical area, a first side of the transmission path being connected to the first electrical area, the apparatus comprising:a first rotary phase shifting transformer having a first rotary phase shifting transformer first terminal and a first rotary phase shifting transformer second terminal;a second rotary phase shifting transformer having a second rotary phase shifting transformer first terminal and a second rotary phase shifting transformer second terminal;wherein the first rotary phase shifting transformer first terminal and the second rotary phase shifting transformer first terminal are connected in parallel to the first side of the transmission path and the first rotary phase shifting transformer second terminal and the second rotary phase shifting transformer second terminal are connected in series with the transmission path; anda control system for applying control signals to the first rotary phase shifting transformer and the second rotary phase shifting transformer whereby an effective phase shift and a voltage magnitude ratio are provided between the first electrical area and the second electrical area.