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HVDC cable termination and DC smoothing reactor on the Baltic Cable HVDC link. The direct current equipment often includes a coil (called a reactor) that adds inductance in series with the DC line to help smooth the direct current. The inductance typically amounts to between 0.1 H and 1 H. The smoothing reactor can have either an air-core or an ...
The two-level converter is the simplest type of three-phase voltage-source converter [29] and can be thought of as a six pulse bridge in which the thyristors have been replaced by IGBTs with inverse-parallel diodes, and the DC smoothing reactors have been replaced by DC smoothing capacitors. Such converters derive their name from the fact that ...
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]
Most notably, the McNeill station was the first HVDC installation to dispense with the DC smoothing reactor, a component which most engineers consider as an absolute must at HVDC plants. Even today, only a small number of back to back HVDC stations (and no point-to-point transmission schemes) have been built without DC smoothing reactors.
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 ...
The DC line has smoothing reactors and surge arrester capacitors at each station. Northeast of Apollo Converter Station the poles of HVDC Cahora Bassa undercross several 400 kV AC lines at 25°54'58"S 28°16'46"E respectively 25°54'57"S 28°16'51"E in such a low altitude that the area under the line may not be walked on and is fenced in [1] .
Only the transformers, the smoothing reactor and one harmonic filter remained on their original sites. Since shutdown of the static inverter, it was planned to sell the installation to eastern Europe, where it would have allowed the construction of an HVDC back-to-back station for exchanging power between eastern Europe and the former Soviet Union.
The New Zealand Inter-Island HVDC link is a long distance bipolar HVDC "Classic" transmission scheme that uses overhead lines and submarine cables to connect between the South and North Islands. It uses thyristor -based line-commutated converters at each end of the link for rectifying and inverting between AC and DC.