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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 ...
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.
Most of the VSC HVDC systems built until 2012 were based on the two-level converter, which can be thought of as a six-pulse bridge in which the thyristors have been replaced by IGBTs with inverse-parallel diodes and the DC smoothing reactors have been replaced by DC smoothing capacitors.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 discrete, two ...
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of three-phase voltage-source converter [29] and can be thought of as a six pulse bridge in which the thyristors have been replaced by IGBTs with inverse-parallel diodes, and the DC smoothing reactors have been replaced by DC smoothing capacitors.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 ...
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.
Since coming online, 11 instances of cable damage have occurred: one on the high voltage line and 10 on the return cable. Causes have included ship anchors, fishing nets, fire, and grid power disturbances. On 14 February 2005, the smoothing reactor at the HVDC station at Bruskowo Wielkie was destroyed by fire. Repairs took 20 hours.
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 .
Production of the first converter transformer 175 MVA as well as the first smoothing reactor 1200 А, 4 Gn for DC transmission line ±750 kV, Ekibastuz-Centre (HVDC Ekibastuz–Centre) 1977 - Production of 100000-th transformer stating from the company startup, namely three-phase transformer 1 000 MVA, 330 kV for CCPP Uglegorskaya, (Ukraine);