Essays about: "HVDC LCC"

Showing result 6 - 7 of 7 essays containing the words HVDC LCC.

1. 6. LCC Bipole with one station earthed via a large capacitor : Theory and simulations

   University essay from Mittuniversitetet/Avdelningen för elektronikkonstruktion

   Author : Johan Jernberg; [2016]
   Keywords : HVDC; LCC; Bipole; Metallic return; pole trip.;

   Abstract : If one of the two poles will trip for some reasons in a regular bipolar HVDC transmission without a return conductor, it is necessary to block the other pole temporarily during the transition to a monopolar operation with metallic return, this procedure will take 1-2 seconds and will affect the connected AC networks by extra disturbances. The object of this survey has been to answer the question if it is possible to have a balanced bipolar transmission without a return conductor and during a trip of one pole control it as an HVDC transmission with series connected converters by adding the by-pass switches and the logic for a series connected HVDC converter system which means that a shutdown of the transferred power during the transition phases is not necessary. READ MORE

3. 7. Impact of Statcom on the Interconnection Of Offshore Wind Farms with HVDC Technology

   University essay from KTH/Elektriska energisystem

   Author : Dimitris Giannoccaro; [2006]
   Keywords : ;

   Abstract : The aim of this study is to define the minimum size of Statcom supporting the interconnection of a large offshore wind farm with high voltage direct current line commutated converters (HVDC LCC) and high voltage direct current voltage source converter (HVDC VSC) connected to a power system. The size of the Statcom is defined by using a simulation model consisting of a wind farm, HVDC LCC based transmission system, HVDC VSC based transmission system, a Statcom and the Cigr� Nordic 32 power system model. READ MORE