随着环境压力日益增长，人们已经认识到需要大力发展可再生能源。在不远的将来，可再生能源将成为电网中的主要一次能源来源。由于可再生能源具有间隙性、波动性等特点，且发电机组特性与传统能源有很大差异，从而对以交流模式为基础的电网带来巨大挑战。研究分析表明，发展直流电网将是重要的解决方案和趋势。为此，超导直流输电将有可能成为未来直流电网的一种有前景的输电方式。本文介绍了国内外在超导直流输电方面的研究进展和近期有关发展计划，并讨论了超导直流输电技术发展的瓶颈问题和技术挑战，同时探讨了未来发展超导直流输电技术的主要努力方向。%With the increasing development of renewable energy, it is expected that the renewable energy would become the dominant energy of the power grid. As the electric power from renewable energy is quite different from that of the traditional energy in controllability and availability, resulting in great challenges for AC power grid, it is recognized that the DC operation mode for power grid would be required in the fu⁃ture. For this reason, the superconducting power transmission would be a promising solution for future DC power grid dominated by renewable energy. In this paper, the state⁃of⁃art of superconducting DC power transmission is reviewed, and the challenges for HVDC superconducting power transmission are discussed.
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