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High Voltage Direct Current (HVDC)Transmission Systems ...

1 Presented at Energy Week 2000, Washington, , USA, March 7-8, 2000 High Voltage Direct Current (HVDC)Transmission SystemsTechnology Review PaperRoberto CharpentierRaghuveer SharmaABB Power SystemsWorld BankABB Financial ServicesSwedenUnited StatesSwedenSynopsisBeginning with a brief historical perspective on the development of High Voltage Direct Current (HVDC)transmission Systems , this paper presents an overview of the status of HVDC Systems in the world today. Itthen reviews the underlying technology of HVDC Systems , and discusses the HVDC Systems from adesign, construction, operation and maintenance points of view. The paper then discusses the recentdevelopments in HVDC technologies. The paper also presents an economic and financial comparison ofHVDC system with those of an AC system; and provides a brief review of reference installations of HVDC Systems . The paper concludes with a brief set of guidelines for choosing HVDC Systems in today selectricity system today electricity industry, in view of the liberalisation and increased effects to conserve the environment,HVDC solutions have become more desirable for the following reasons: Environmental advantages Economical (cheapest solution) Asynchronous interconnections Power flow control Added benefits to the transmission (stability, power quality etc.)

electricity system development. ... In these filters the passive part is reduced to a minimum and modern power electronics is used to measure, invert and re-inject the harmonics, thus rendering the filtering very effective. ... In general, the basic parameters such as power to be transmitted, distance of transmission, voltage levels, ...

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