| 1. | Dynamic frequency selection dynamic channel selection dfs dcs
动态频率选择动态信道选择 |
| 2. | Transient state frequency variation
动态频率变化率 |
| 3. | Dynamic frequency allocation
动态频率分配 |
| 4. | Dynamic frequency scanning
动态频率扫描 |
| 5. | 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。 |
| 6. | 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。 |
| 7. | With development of modern power electronic technique , many reactive power - voltage controllers emerged which can improve voltage stability although debasing frequency dynamics at the same time
随着现代电力电子技术的发展，电力系统出现了许多用于无功-电压控制的装置，这些装置在提高系统电压稳定性的同时，使系统的动态频率特性变坏。 |
| 8. | All its properties make it best suitable for the system diagnosis which involves examining 13 analog signals , detecting several digital signal s , issuing the required instructions at an exact pace and sampling many analog signals simultaneously
在硬件设计中选用了pc / 104模块及多功能数据采集模块。实现了加速度计频差信号的动态频率测量、多通道模拟信号的高速同步采样。 |
| 9. | By analyzing load voltage characteristics , this thesis does some simulations of frequency dynamics of power system with or without voltage controllor and provides referenced idea of how to harmonize voltage and frequency emergency control when accident happen
论文在分析系统负荷的电压特性的基础上，对有无电压控制器的系统动态频率特性进行仿真，并为在发生事故的暂态过程中，电压、频率的紧急控制如何协调提出参考意见。 |
| 10. | Analysis of dynamic frequency process of power system is basis of system performance research 、 design of under frequency load - shedding scheme and evaluation of different measure of voltage regulation and frequency regulation . with development of power system , there are more and more factors that affect dynamic frequency characteristics which make it more and more complicated . the method which use single - generator - to - load model to analyse frequency dynamics can not suit for actual system
随着电力系统的发展，影响动态频率特性的因素越来越多，动态频率特性日趋复杂，用传统的单机模型分析系统动态频率特性的方法已不能适应实际系统的需要，迫切需要对现代电力系统中影响动态频率特性的因素进行分析。 |
