特高压直流输电多端馈入方式稳态特性研究Steady State Characteristic of Multi Infeed UHVDC Power Transmission
高媛;韩民晓;
摘要(Abstract):
随着传统高压直流输电容量的不断增大,受端系统电压支撑能力限制特高压直流应用的问题变得越来越突出。在分析特高压单端馈入存在的局限性的基础上,提出多端单层馈入和多端分层馈入2种方式。根据节点阻抗矩阵推导出不同馈入方式下的受端系统短路比,并进行对比分析。以向上和德宝直流工程为算例,比较不同馈入方式下的受端系统短路比及功率传输特性曲线,验证多端馈入的优势。从直流联网、系统扩建等方面给出了各种馈入方式的优缺点。最后对未来的特高压直流输电接入方式给出合理建议。
关键词(KeyWords): 特高压直流输电;多端单层馈入;多端分层馈入;短路比;功率传输曲线
基金项目(Foundation): 国家自然科学基金项目(51177044)~~
作者(Author): 高媛;韩民晓;
Email:
DOI: 10.13335/j.1000-3673.pst.2014.12.028
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