电网技术2012，Vol.36Issue(11)：153-158,6.
两回HVDC并行输电系统送端谐波不稳定问题的判据研究
Research on Criterion for Harmonic Instability at Sending End of HVDC Transmission System Composed of Parallel Double-Circuit Lines
摘要
Abstract
Based on the research result of harmonic instability in single-circuit HVDC power transmission system, by use of switching function a further theoretical derivation of the modulation of converter is performed, and in the viewpoint of circuit principle the whole process of transferring harmonics between AC power transmission system and the HVDC power transmission system composed of parallel double-circuit lines back and forth via DC converter is overall considered, and a new criterion to judge whether harmonic instability occurs in HVDC power transmission system is proposed. The fact that the results of frequency scanning analysis based on the proposed criterion coincide with results of electromagnetic transient faults simulation shows that the proposed new criterion can well assess the risk of harmonic instability at the sending end of HVDC power transmission system composed of parallel double-circuit lines.关键词
谐波不稳定/低次谐波谐振/两回高压直流并行输电/频率扫描/电磁暂态仿真Key words
harmonic instability/ low-order harmonic resonance/ parallel double-circuit HVDC power transmission/ frequency scanning/ electromagnetic transient simulation分类
信息技术与安全科学引用本文复制引用
穆子龙,李兴源,王渝红..两回HVDC并行输电系统送端谐波不稳定问题的判据研究[J].电网技术,2012,36(11):153-158,6.基金项目
国家自然科学基金重点项目(51037003) （51037003）
四川省科技厅基础应用计划(2010JY0018). （2010JY0018）
