Most faults in power distribution systems are single phase to ground faults.
小电流接地系统发生最多的故障是单相接地故障。
Each alarm kit displays the phase to ground insulation through 15-20 branches of the network.
每台报警显示箱可反映15～20条电网支路的单相对地绝缘状态。
On account of the weak fault current and unstable fault arc, the problems of the single phase to ground fault line selection in the non-solid earthed network have never been thoroughly resolved.
由于故障电流小、电弧不稳定等原因，小电流接地系统单相故障选线问题始终没有得到彻底解决。
Small Current Grounding Power System is widely used in power distribution network with middle and low voltage in china, and the single phase to ground fault takes place most frequently in such system.
提出了一种基于线路分布参数的小电流接地系统的高精度故障模型，用于分析单相接地故障产生的暂态信号特征及进一步完善基于暂态信息的小电流接地故障选线判据。
Northrop Grumman Corporation has been awarded the first phase of a ＄30 million firm-fixed price U.S. Air Force contract to develop a global space surveillance ground radar system.
诺斯罗普·格鲁曼公司已经获得了美国空军第一阶段价值3000万美元的合同，以研发全球空间监视地面雷达系统。
Due to additive relative motion between ground jamming emitters and SAR, the spurious phase modulation of transmission signal is produced.
地面干扰发射机和SAR之间的附加相对运动，产生了传输发射信号的寄生相位调制。
When determine whether the three phases are in balance, directly measuring phase residual voltages to ground is proved to be inaccurate.
通过测量各相对地的残压来判定发电机三相是否对称的方法是不准确的。
Due to three-phase capacitance to ground, certain voltage exists between the neutral and the ground for a generator with ungrounded neutral.
对于中性点不直接接地的发电机，由于三相对地电容值存在差异，中性点与地之间存在一定电压。
The capacitance to ground of that bit of metal produces a small phase adjustment in the circuit.
小块金属的接地电容在电路中产生小相位调整。
The course of take-off and landing are both divided into three phases: the phase from flying at safe height to contacting the ground.
本论文把起飞和着陆过程均分为三个阶段：从安全高度到接触地面阶段。
Great attention has been paid to the research on the ground maneuvers of aircraft during the phase of aircraft design.
飞机地面运动特性研究已成为现代飞机设计及研制中的重要内容。
The fault phase selector discussed is based on the result that the fault component of sound phases is zero when a single-phase-to-ground fault occurs.
文中所探讨的相电流突变量选相元件，是利用单相接地故障时，两健全相相间电流突变量为零这一特征来得到的。
During fast starting, stopping or running phase, humans often use the impact of their feet on the ground to improve moving velocity.
人类在快速起停或跑动过程中，往往利用脚对地的冲击来提高运行速度。
When a fault occurs on one phase of a 3-phase, 4-wire system, the other two phases rise in voltage relative to ground (about 20%).
当故障发生在3相4线系统中的一相时，其它两相的对地电压就升高（约升高20%）。 好评（0）
The final phase has begun for the striker, as he has finally returned to the training ground, and commenced light running to redevelop the strength lost in his knees.
对于这位射手，最后的阶段已经开始了，因为他终于回到了训练场，并开始轻量的跑步训练来使他的膝盖恢复力量。
Furthermore, based on Lab VIEW virtual instrument technology, the chaotic single-phase-to-ground fault protection is developed.
采用虚拟仪器技术，开发了基于混沌选线方法的小电流接地系统单相接地故障选线仪。
And the ground-state entanglement varies suddenly at the critical point of phase transition. The entanglement between two particles is enhanced due to the energy current.
基态纠缠在相变临界点处发生突变，两粒子之间的纠缠由于能量的流动而得到增强。
Combined with the research status of single-phase-to-ground fault locating for small current grounding system, a new idea based on non-fault-phase transient current is presented.
针对小电流接地系统单相接地故障定位的研究现状，提出基于非故障相暂态电流的单相接地故障定位的思想。
The examples given in this paper show that it is very necessary to take the ground motion phase lags into account for long span...
文中给出的对比例题表明，对大跨度结构考虑地震输入相位差的影响是十分必要的。
In this paper, the method based on the combination of wavelet transform and BP neural network is presented to realize fault location for the single-phase-to-earth fault in non-direct-ground systems.
提出一种基于小波变换与BP神经网络相结合的方法来实现小电流接地系统单相接地故障定位。
Under normal operation of distribution network, the device automatically traces network parameters and calculates phase-to-ground capacitive current.
配电网正常运行时，装置自动跟踪电网参数并计算相对地电容电流。
When permanent phase-to-ground faults occur, this method can be used to identify the fault phases and justify fault location.
对永久性接地故障，该方法可实现故障选相并进行定位。
The control circuit calculates the phase-to-phase voltages from the phase-to-ground voltages.
控制电路从单相接地电压计算得出相间电压。
The control circuit calculates the phase-to-phase voltages from the phase-to-ground voltages.
控制电路从单相接地电压计算得出相间电压。
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