Review of Converter Technology for HVDC Transmission Systems

Jun WEN; Weiyang YIN; Jialiang WEN; Minxiao HAN

doi:10.13648/j.cnki.issn1674-0629.2015.02.003

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South Power Sys Technol ›› 2015, Vol. 9 ›› Issue (2) : 16-24. DOI: 10.13648/j.cnki.issn1674-0629.2015.02.003

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Review of Converter Technology for HVDC Transmission Systems

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Abstract

Converters as the key equipment for HVDC transmission systems have the features of giant capacity, strongly controllability and highly reliability. Conventional thyristor converter is featured with great transporting capability, high cost and heavily harmonics.Voltage source converter (VSC), based on controllable power electronics elements and PWM technology, overcomes some problems of conventional thyristor converter and is developing rapidly. Typical converters for HVDC transmission systems, including conventional thyristor converter, two twelve-pulse converters per pole, capacitor commutated converter (CCC) and voltage source converter, etc. are reviewed in detail on their structure, basic principle and control strategy. Moreover, technology characteristics and application fields of these converters are also surveyed. It is shown that conventional thyristor converters are still the perfect candidates for long distance and giant capability HVDC transmission system, and voltage source converters have a good application prospect of future HVDC transmission applications.

Key words

(U)HVDC transmission / voltage source converter (VSC) / capacitor commutated converter (CCC) / modular multi-level converter (MMC) / converter valve

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Jun WEN , Weiyang YIN , Jialiang WEN , et al. Review of Converter Technology for HVDC Transmission Systems[J]. Southern Power System Technology. 2015, 9(2): 16-24 https://doi.org/10.13648/j.cnki.issn1674-0629.2015.02.003

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