瞬时故障广泛存在于各种系统并导致功能失效。
Transient faults appear widely in various systems and lead to malfunctions.
按照其导致系统故障的机理不同,瞬时故障可被划分为若干类。
According to the mechanism of system failures resulted from them, transient faults can be classified into three types.
瞬时故障时在最佳重合时刻分相重合,永久故障时闭锁重合闸。
Further more, the switches reclose at optimal reclosing time by phase for instantaneous fault and shut down reclosure for permanent fault.
第一类瞬时故障具有这样的性质,其持续时间一旦超过某一界限即引起系统故障。
Type I transient faults include those which lead immediately to system failures once their time duration exceeds some specified limit.
对于网络中存在的节点瞬时故障,通过时间冗余的检测方法,降低故障诊断的虚警率。
Time redundancy is used to reduce faulty alarm rate for transient faults of nodes in WSNs.
硬件瞬时故障可以通过修改指令操作码和操作数的方式引发控制流错误,破坏程序的正常执行。
Hardware transient faults can cause control flow errors and corrupt the normal execution process by altering the operand and opcode of instructions.
本文以机车瞬时故障检测记录仪为背景,致力于嵌入式us B主机故障数据转储技术的设计和实现。
This dissertation is dedicated to the design and implement of the USB-Host data transmission technology in the background of the Distributed Fault Detecting System of the Train.
通过该简化的文件系统函数,可以在减少资源消耗的前提下,更快捷的完成机车检测瞬时故障记录仪的故障数据转储。
Through the simplified file system, it completes the data transmission on the Distributed Fault Detecting system of the Train more quickly with less consumption of resources.
动态电流监测器能瞬时反映出负载跳变状态,更容易判断手机板的故障部份。
Dynamic current monitor reflects transient loading current instantly to judge the faulty parts of mobile circuit board easily.
提出了一种新的智能实时捕捉方法,对瞬时性故障的最佳重合闸时间进行了捕捉。
A new intelligent on-line capturing of the optimal reclosing time of transient fault is presented.
通过数字模拟实验与齿轮箱故障信号检测,验证了新的双线性时间-频率分布对复杂信号中瞬时分量的探测效果。
By digital simulation and detection of gearbox fault signal the detection effect of the novel bilinear time-frequency transform is validated for the transient components in complex signal.
对于后备保护装置防止高阻抗接地故障,将配置一只双极方向过电流继电器,同瞬时跳闸附件的时间成反比。
For backup protection against high resistive ground faults, there will be a dual polarized directional overcurrent relay, inverse time with instantaneous trip attachment.
应用瞬时值对称分量变换,可提取电压、电流故障分量的正序空间向量。
The transformation of the instantaneous value symmetry component applied, the positive sequence space vector of fault component of the voltage and current can be derived.
针对试验过程中可能产生的瞬时过电压和故障过电压分别建立了数学和仿真模型,分析了过电压的产生机理、危害及特点。
The mathematics and simulation model for transient and fault overvoltage are established and their generation mechanisms, harm and characteristic are analyzed.
对发动机气缸压力和瞬时转速的分析和研究是获取发动机工作情况和故障原因的重要手段;
The analysis and research of engine cylinder pressure and transient speed is the important method to obtain the working condition and breakdown reason of engine.
提出一种利用瞬时转速信号在线监测汽车发动机各缸工作不均匀性和失火故障的方法。
This paper proposes a technique for on line detection of cylinder-to-cylinder nonuniformity and incipient misfire by instantaneous angular velocity signals in automotive engines.
在分析瞬时功率频谱特性的基础上,提出了一种基于瞬时功率的变压器励磁涌流和内部故障电流识别新方法。
A new method, based on the analysis of frequency spectrum of instantaneous power, for the discrimination between internal fault currents and inrush currents in transformer is proposed.
提出了一种用于区分输电线路瞬时性故障和永久性故障的新方法:利用高频通道及其信号区分瞬时性故障和永久性故障,从而实现三相自适应重合闸。
This paper brings forward a whole new scheme of three-phase adaptive reclosure, which uses the carrier channel and its signals to distinguish transient faults and permanent faults.
针对感应电动机轴承故障特征提取的不足,提出了瞬时功率小波包分解的方法。
To solve the problem in obtaining bearing fault characteristics of induction motors, a method based on instantaneous power decomposition via wavelet packet is put forward.
提出基于小波尺度图重分配的信号瞬态特征检测方法和瞬时能量估计方法,并应用于轴承在多种轻微故障状况下的振动非平稳特征的检测与表示。
The singal transient feature detection represent method, and a transient energy evaluation method are used based on the reassigned scalogram for the vibration non-stationary feature representation.
建议了一种基于复解析小波变换的瞬时频率分析齿轮故障振动信号的方法。 该方法将希尔伯特变换与小波变换相结合,具有自适应分析能力。
A method using transient frequency based on complex-analytical- wavelet-transform, which combines Hilbert transform with wavelet transform and possesses adaptive analytical ability, is proposed.
在高中压系统,充电保护电流定值是按躲过最小运行方式故障电流整定,并要求瞬时动作;
In high-middle voltage power system, the current setting of the charge-protection always bases on the fault current in the minimal operation mode, and the break should be snapped action.
区分瞬时性和永久性故障为目的的自适应重合闸,能减少故障对电能的损失,增强电网的稳定性。
The self-adaptive reclosure, which is aimed to distinguish the transient fault and the permanent fault, can reduce the power loss caused by faults and enhance the stability of power system.
提出了一种新型区分输电线路单相瞬时性故障与永久性故障的方法。
On the basis of detailed research a new method isproposed which can distinguish the temporary faults frompermanent faults in transmission lines.
结果表明,重分配的小波尺度图能够以较高的时频分辨率表示轴承振动中的非平稳特征,反映轴承的多种故障,瞬时能量估计可以作为分析轴承状态的依据。
Results show that the reassigned scalogram has the signal feature in the time-scale plane with the high resolution, the transient energy evaluation has the transient feature in a more distinct as…
结果表明,重分配的小波尺度图能够以较高的时频分辨率表示轴承振动中的非平稳特征,反映轴承的多种故障,瞬时能量估计可以作为分析轴承状态的依据。
Results show that the reassigned scalogram has the signal feature in the time-scale plane with the high resolution, the transient energy evaluation has the transient feature in a more distinct as…
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