多馈入直流系统的量化分析指标及其应用

在MIIF和MIESCR指标的基础上，对MIIF的概念进行了推广，使针对多馈入直流系统的量化分析指标能够适用于交直流系统不同运行方式分析的需要。解决了长期以来对多馈入直流系统中各直流落点间电气距离、交流系统相对强弱缺乏量化指标和分析方法问题，并结合南方电网2008年丰大运行方式，介绍了MIIF和MIESCR指标的计算和应用分析方法。

The Index Parameters for Analyzing Multi-infeed HVDC Systems and Their Applications

Based on the indexes of MIIF (multi-infeed interaction factor) and MIESCR (multi-infeed effective short circuit ratio), this paper generalizes the concept of MIIF to meet the purpose of analyzing ac and dc systems under different operation modes, and thus provides a solution for the issue of being short of indexes and methods to determine the electric distance between any two infeed points of the multi-infeed dc system, and relative strength of the ac system. Furthermore, taking 2008 high water level peak load operation mode of China Southern Power Grid as an example, indexes of MIIF and MIESC are calculated, and their usage to analyze the system is illustrated.