摘要
新型多端直流输电系统(VSC-MTDC)是新型两端直流输电系统(VSC-HVDC)的扩展,其运行原理与两端系统相比有较大差别,很多问题有待深入研究,其中首要的是系统静态稳定性问题。引入混合势函数,采用平衡点判定法。提出了判定新型多端直流输电系统静态稳定性的方法。通过仿真实验,证明了该静态稳定性判定方法的正确性。
The novel multi-terminal VSC-HVDC (VSC-MTDC) is the expansion of two-terminal VSC-HVDC. Since the operating principle and control scheme of VSC-HVDC is much difference from two-terminal VSC-HVDC, the system static stability is the first problem being studied. The method for determing the static stability of VSC-HVDC is pointed out by applying a mixed potential function and balance-point judge. The correctness of static stability criterion is verified by simulation test.
