Lévis de-icer
Coordinates: 46 ° 42 ′ 34 " N , 71 ° 11 ′ 29" W.
The Lévis de-icer is a system for de-icing overhead lines . The system installed in the Lévis substation south of Québec has a maximum output power of 250 MW and a bipolar operating voltage of ± 17.4 kV . The direct current for de-icing can be up to 8 kA . It is conducted for about 1 hour through a line segment that is short-circuited at the far end and separated from the rest of the network . Due to the high current and the ohmic resistance , the line heats up and the ice melts. In addition to the de-icing function, the system also serves as a static reactive power compensator (SVC). Components such as those used in HVDC technology are used to generate and control the direct current .
The Lévis de-icer went into operation in 2008, was built by Areva and serves several overhead lines with lengths of 27 km to 242 km, which in normal operation are operated with three-phase alternating current of 315 kV or 735 kV.
The facility was built after a major ice storm in January 1998 . This had destroyed over 600 km of overhead lines of the Hydro-Québec and there had been large-scale power outages that lasted up to a few weeks in some regions. The Lévis de-icer was built in the following years to avoid such weather-related power outages.
Web links
Literature sources
- C. Horwill, CC Davidson, M. Granger, A. Dery: An Application of HVDC to the de-icing of Transmission Lines, Transmission and Distribution Conference and Exhibition . IEEE, 2006, doi : 10.1109 / TDC.2006.1668552 .
Individual evidence
- ^ Neil Kirby: AREVA T&D Power Electronics - HVDC & FACTS. (PDF) (No longer available online.) AREVA HVDC Technology, December 2007, p. 26 , archived from the original on December 24, 2013 ; accessed on July 24, 2014 (English). Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
