特高压多端直流技术的应用及前景分析

输电走廊紧张和单一市场消纳能力不足日渐成为限制我国大型能源基地外送和充分消纳的关键问题。特高压多端直流输电适用于多个送端和多个受端间的远距离大容量输电,可节省宝贵的输电走廊,可灵活匹配送受端,有助于解决我国大型能源基地外送面临的输电走廊紧张和单一市场消纳能力不足等问题。特高压多端直流输电代表了未来直流技术发展的一个重要方向。结合乌东德电站送电广东广西特高压多端直流示范工程的设计工作,介绍了特高压多端直流技术的优势、应用情况,并分析了该技术未来的应用前景。

拉挤梁风电叶片的相控阵超声检测数据分析

针对拉挤梁风电叶片相控阵超声检测时,信号受叶片特殊结构及材料各向异性影响出现数据信噪比低、缺陷识别困难的问题,通过分析叶片结构及其典型缺陷,明确相控阵超声图像信号与叶片结构的对应关系,并提出了高效、准确的数据分析流程。试验结果表明,该方法有助于提高风电行业数据分析工作的质量。

Study on Capability of Power Transmission from West to East in China Southern Power Grid

The uneven distribution of economic development and energy resources in the Southern Power Grid, yet with stronger complementary superiority has determined the necessity to actively push forward power transmission from west to east in the Southern Power Grid and realize optimal disposition in even greater scope. To further promote transmission capability and operational security from west to east, measures including power sources disposition, unit starting schemes, power grid configuration, DC modulation and application of new transmission technologies are analyzed in this paper.