变压器

In this paper, a new method of identifying magnetizing inrush currents based on features of flux locus is presented.

本文提出了一种基于磁通轨迹特征的变压器励磁涌流识别方法。

The result of simulation shows that it is effective for the accurate discrimination of magnetizing inrush current and internal fault current.

仿真测试结果验证了该方案是切实可行的，能够准确识别各种变压器状态下的励磁涌流和故障电流。

The identification of magnetizing inrush is a key problem in transformer differential protection.

励磁涌流识别是变压器微机差动保护中的关键问题。

The difference between inrush current and short-circuit current is the focus of electrical specialist.

如何区分变压器励磁涌流和短路电流是众多学者研究的热点问题之一。

Discrimination for magnetizing inrush current of transformer based on artificial neural network was studied.

研究了基于神经网络方法的电力变压器励磁涌流鉴别。

Principle of transformer fast direction protection based on transformation of the instaneous value symmetry component.

基于瞬时值对称分量变换的变压器快速方向保护。

The conclusion and method are instructional to design and use of this type of sensor.

笔者从理论上分析了电源频率对差动变压器输出特性的影响，进行了实验验证，同时给出了减小这种影响的方法。1理论

The insulated state is one of the most important problems of large power transformer safely running in power system.

大型电力变压器在电力系统中的安全运行，其绝缘状态至关重要。

Based on the wavelet and multi-resolution theory, a new method is proposed to construct the protection judgment to discriminate the inrush current and internal fault by the ratio of high frequency segments in different scales of the energy spectrum.

基于小波多分辨率分析理论，提出了一种以能量变化率的比值作为判据，区分变压器励磁涌流和内部短路电流的新方法—小波能量谱图解法。

The amplifier itself consists of a cascade of RC neutralized common-emitter stages each with primary tuned interstage transformer.

放大器由中和了的共发射极级链接而成，级间用初级调谐的变压器耦合，叙述分三个部分：第一部分将中和了的共发射极电路用近似等效电路表示，第二部分分析级间网络，将晶体管放大器的功率增益表示成预给的频率函数后，就能导出各级间网络的谐振频率和Q值等，从而求出线路元件的数值。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。