VFT：电压频率瞬变

英文缩写词VFT的例句

1. The high quality of power is indicated by the stability of voltage and frequency, distortion rate of voltage, transient process and so on.
2. 电能的高质量体现在电压和频率的稳定性、电压畸变率、暂态过程长短等多个方面。
3. The recovery voltage contains power frequency component and low-frequency decaying component when transient fault occurs, and it only contains power frequency component when permanent fault occurs.
4. 瞬时性故障时，恢复电压由工频周期分量和非工频衰减分量组成，永久性故障时，恢复电压仅由工频周期分量组成。
5. Such problems as the attenuation of DC elements and Sine waveform, voltage sag and frequency deviation should be taken into account in order to analyze the transient process in the power system.
6. 要分析电网的暂态特性，还必须考虑衰减直流分量和衰减正弦波，以及电压缺口和频率偏移等问题。
7. By the aid of AC Small Signal Analysis in Saber, the relations between the voltage transfer function, the width of the capacitive frequency band and spacial factor are studied in frequency domain for the transient model of power transformer windings.
8. 运用Saber的交流小信号分析工具，对建立的变压器绕组暂态仿真模型，从频域的角度研究了电压传输函数及其容性频带的宽度与绕组空间因数的关系。
9. Parameter setting for under frequency load shedding ( UFLS ) and under voltage load shedding ( UVLS ) should not only ensure static security of frequency and voltage, but also suffice their transient security.
10. 指出了低频和低压减载装置的整定不仅要满足静态和中长期动态对频率和电压的安全性要求，而且要满足暂态过程中的频率和电压安全约束。