云南电网异步联网后的运行频率分析

摘要

The paper introduced structure of asynchronous interconnection of Yunnan power grid. Yunnan power grid connections changes from AC/DC hybrid interconnection to DC interconnection, The stability characteristics of the power grid will have great changes. The paper analyze the dynamic damping of power system and the effect of power grid by multiple DC transmission system fault, and take any measures better adapt to the power grid structure. At last, the paper proposed coordination scheme which advantageous to the yunnan power grid and stable operation.%介绍云南电网异步联网运行的电网结构，电网由运来的交直流混联运行变为与南方主网的纯直流联网，电网的稳定特性将发生较大的改变，分析了系统动态阻尼的变化、多回直流故障对电网的影响，采取何种措施更好的适应这种电网结构，同时还分析了交直流系统之间如何协调配合。最后根据提出有利于云南电网稳定运行的交直流协调配合方案。