The dispersion of dynamic frequency in complicated system is one of reasons which lead the unsatisfactory performance of under frequency load shedding device 而复杂系统动态频率的时空分散性正是导致低频减载装置动作不令人满意的原因之一。
On the basis of discussing frequency characteristics , this thesis analyses the factors which affect dynamic frequency characteristics of simple and complicated power system separately through simulation 本论文在分析电力系统频率特性的基础上,分别通过仿真分析了影响简单系统和复杂系统动态频率特性的因素。