A new high speed protection criterion for high voltage transmission line based on the wavelet transform of transient voltage signals from the two ends of the line is presented.
提出了一种基于双端电压暂态信号小波变换的高压输电线路快速保护算法。
Based on the analysis for microcomputer protection of high voltage line, the dissertation designs an adaptive microcomputer protection of high voltage line which is based on embedded systems.
本文在对高压线路微机保护现状分析的基础上，设计了一套基于嵌入式系统的微机保护装置。
So a virtual line flux has been constructed to serve as the oriented vector instead of the line voltage vector to remove the AC voltage sensors and reduce the cost of PWM rectifiers.
采用类似于交流电机磁链观测的方法来构造一个虚拟电网磁链，可以代替电网电压作为PWM整流器矢量控制中的定向矢量，达到省去交流侧电网电压传感器，降低PWM整流器成本的目的。
Thus, the system can restrain the noise from low voltage power line and improve communication reliability. It may be widely applied to the communication field using low voltage power line.
因此，该低压电力线扩谱通信系统能较好地抑制低压电力线通信信道的干扰，提高了通信的可靠性，可广泛应用于低压电力线通信领域。
The line voltage polarity detection circuit detects the polarity of line voltage and controls the drive circuit to conduct or cut off the gate-controlled transistor.
该线电压极性检测电路检测线电压的 极性且控制该驱动电路以导通或截止该栅控晶体管。
The voltage charged on transmission line will be unstable when capacity of transmission line is very low and the charging voltage is high. It then influences the stability of the output pulse.
传输线电容量小而充电电压高时，传输线上的充电电压不稳定，影响输出脉冲电压的稳定。
The coefficient of grounding is the ratio of the maximum sustained line-to-ground voltage during faults to the maximum operating line-to-line voltage.
接地系数是故障时最大持续相电压与最大运行线电压之比。
The time harmonic voltage and current wave propagation along a transmission line can readily be transferred from frequency domain voltage and current phasor distribution along the line.
由传输线上电压及电流沿线分布之频域相量，可转换为传输线上各频率成份弦波电压及电流沿线之时域传播。
Line-to-line voltage Line-to-line voltage is the voltage between any two phases of an AC generator.
线电压线电压是指交流发电机任何两相间的电压。
Line-to-line voltage Line-to-line voltage is the voltage between any two phases of an AC generator.
线电压线电压是指交流发电机任何两相间的电压。
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