1) energy ratio of a high frequency component to a low one
高低频能量比
1.
The analysis in theory shows that the protection based on the energy ratio of a high frequency component to a low one can be applied on the EHV lines equipped with shunt reactors and its performance is hardly influenced by the number and locations of reactors.
理论分析表明,利用高低频段能量比的单端量保护可应用于带并联电抗器的超高压输电线路,且保护性能几乎不受并联电抗器的安装位置与数目的影响,在带并联电抗器的线路发生金属性故障时仍具有较高灵敏度,因此基于高低频能量比的保护应用于带并联电抗器的线路时对过渡电阻的变化不敏感。
2) the energy ratio of a high frequency band to a low one
高低频段能量比
1.
The wavelet packet transform technique is employed to determine the energy ratio of a high frequency band to a low one.
以小波包分解作为分频手段对暂态电流进行分频,利用高低频段能量比作为保护判据。
3) Proportion of low frequency energy
低频能量比
4) low frequency energy
低频能量
1.
Improvement of low frequency energy of vibration signal produced by repetitive shock machine
气动式振动台振动信号低频能量改善研究
6) high-low frequency weight
高低频分量
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