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The Matiari-Lahore transmission line is an 878 km-long, ±660kV bi-pole high-voltage direct current (HVDC) transmission line running from south to north Pakistan, complete with three repeater stations, two converter stations at Matiari and Lahore, two 40 km electrode lines, and two grounding electrode stations.
HVDC Pole 2 thyristor valve hall at Haywards in the New Zealand HVDC Inter-Island scheme. A valve hall is a building which contains the valves of the static inverters of a high-voltage direct current plant. The valves consist of thyristors, or at older plants, mercury arc rectifiers.
Electric power transmission through interconnectors using high-voltage direct-current (HVDC) involves usually two converter stations and a transmission line. Generally overhead lines are used, but an important class of HVDC projects use submarine power cables. A back-to-back station has no transmission line and joins two separate AC grids at a ...
Long distance HVDC lines carrying hydroelectricity from Canada's Nelson River to this converter station where it is converted to AC for use in southern Manitoba's grid. A high-voltage direct current (HVDC) electric power transmission system uses direct current (DC) for electric power transmission, in contrast with the more common alternating current (AC) transmission systems. [1]
Path 27, also called the Intermountain [c] or the Southern Transmission System (STS), [4] [5] [6] is a high-voltage direct current (HVDC) electrical transmission line running from the coal-fired Intermountain Power Plant near Delta, Utah, to the Adelanto Converter Station at Adelanto, California, in the Southwestern United States.
HVDC electrodes are also used in some monopolar HVDC systems, for example the Italy–Corsica–Sardinia scheme. [4] In such systems the electrode line permanently carries the same current as the high-voltage conductor; however since the ground current is then only unidirectional, one of the electrodes (the cathode) can be of simpler design ...
HVDC Leyte–Luzon is a high-voltage direct current transmission link in the Philippines between geothermal power plants on the islands of Leyte and Luzon. Abbreviated as 8LI1NAG-ORMOC, 8LI1NAG-ORMOC HVDC [ 1 ] (with " HVDC " at end) and known as Ormoc - Naga HVDC transmission line.
HVDC converters can take several different forms. Early HVDC systems, built until the 1930s, were effectively rotary converters and used electromechanical conversion with motor-generator sets connected in series on the DC side and in parallel on the AC side. However, all HVDC systems built since the 1940s have used electronic (static) converters.