涌流

The calculation result shows that this method is able to detect transformer internal fault and magnetizing inrush current correctly.

计算结果表明该方法能可靠识别内部故障和励磁涌流，效果明显。

After analyzing the phenomenon of magnetizing inrush current and theory limitations of differential protection.

本文分析了变压器的励磁涌流现象以及变压器差动保护还存在的理论缺陷。

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。

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。

This was of importance for the further research of surge flow irrigation principle.

这对涌流灌溉原理的研究具有重要的参考价值。

Secondly, on the basis of mechanism of the magnetizing rush current, the new protection principle based conversation of energy is pointed out, and its feasibility also is proved in detail.

紧接着在对励磁涌流产生机理进行详细分析的基础上，提出了基于能量守恒定律的新的保护原理，并对其理论基础和可行性进行了充分的论证。

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

Matlab was used for the simulation calculation about a two-source power system, and the trained neural network was used to achieve regonition of the magnetizing inrush current.

利用Matlab软件对一个双端供电系统进行了仿真运算以得到神经网络的训练样本，用经训练的神经网络实现了对励磁涌流的识别。

Digital simulation shows that the proposed method can distinguish internal fault from external fault, magnetizing inrush current, normal operation.

经仿真计算验证，该方法能有效地区分内部故障和励磁涌流、外部故障及正常运行状态。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。