查询词典 current

The equation of magnetic line of force for current element is derived and the concluion is obtained that any magnetic line of force is a close circle and its center changing in straight line on three coordinate plane, the oblique rate is determined by current element.

导出了电流元的磁力线方程，发现任一磁力线是一闭合圆线，圆心在三个坐标平面上沿直线变化，斜率由电流元的取向决

The least load current to realizemagnetic insulation in MILO is obtained from the relation between current and azimuthmagnetic field and the relation between magnetic field and electron movement track.

根据电流与角向磁场的关系和磁场与电子运动轨迹的关系得到在MILO中实现磁绝缘所需要的最小负载二极管电流。

Magnetizing current and torque with good linear relationship with the excitation current at a very broad range of is proportional to.

且转矩随激磁电流呈良好的线性关系，与激磁电流在相当广阔的范围内成正比。

One is the method of distinguishing magnetizing inrush current based on the ratio of voltage and fluxional differential current, and the other one is the method based on attenuation of fundamental wave.

第一种是基于电压与电流微分比值原理的励磁涌流鉴别方法，第二种是基于基波分量衰减的励磁涌流鉴别方法。

Transformer; magnetizing inrush current; fault current; BP neural network; RBF network

变压器；励磁涌流；故障电流； BP神经网络； RBF神经网络

It is, again, helpful to use the magnetizing current As explained earlier, the magnetizing current imq can be approximated to be constant.

这是一次有益的利用激磁电流说过磁化电流过量可近似为常数。

This thesis chooses B spline wavelet that adapts to the analysis of power system signal, and uses the wavelet transformer to analyze the magnetizing inrush current and inner fault current.

而小波变换具有多尺度分析和良好时频域局部化分析特性，适合提取信号边缘和峰值突变的特征，能够很好的检测信号奇异性。

The waveform of differential current in each data window is divided into four parts averagely according to time, and the area-ratio among the four parts can be used to distinguish magnetizing inrush from internal fault current.

该算法以工频一周波为数据窗长，将数据窗内的差流波形按时间均分为4份，根据各份面积之间的比值来识别励磁涌流和内部故障电流。

In the transformer differential protection, it is a congenital and difficult problem that cant be avoided how to distinguish the magnetizing inrush current with the internal fault current. It has become the focus studied for many years. The existing transformer protection principles all have certain defects and the main reason lies in inadequate understand of the transformer fault mechanism.

在变压器差动保护中，如何区分励磁涌流与内部故障电流是一个先天性的、不可回避的难题，多年来一直成为研究的热点，而且现有的变压器保护原理也都存在一定的缺陷，其主要原因在于对变压器内部故障的机理认识不够。

Part One Research on Measuring of Resistive Current Passing Through XLPE Cable With Applying AC Voltage: By many tests,It is found that mains frequency is not sensitive to the mechanical fault of power cable main insulation.Accordingly,a new method that the fault of power cable main insulation is measured by measuring the resistance component of leakage current is put forward.

第一部分对XLPE 电力电缆施加工频交流电压时阻性电流的检测研究：通过大量的试验发现工频交流耐压试验对电力电缆主绝缘的机械损伤不灵敏，从而提出了通过检测泄漏电流的阻性分量来检测电力电缆主绝缘缺陷的新方法。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。