电力变压器

Firstly, the developing foreground and actuality of power transformer main protection principle are summarized and introduced in detail.

文中首先对电力变压器保护原理的现状和发展情况进行了介绍和总结。

The application of genetic support vector machine in power transformer fault diagnosis .

遗传支持向量机在电力变压器故障诊断中的应用。

The architecture of fault diagnostics expert system of power transformer.

设计了电力变压器故障诊断专家系统的体系结构。

Because of quality, run and other problems of power transformer, catastrophic accidents and faults often take place.

由于大型电力变压器设计制造质量和运行等诸多方面的原因，恶性事故和故障时有发生，严重影响了电网的安全稳定运行。

A diagnosis method of b gray relation of gas in fault electric transformer oil.

故障电力变压器油中气体的B型灰色关联度诊断法。

EC 33. Lead in solders for the soldering of thin copper wires of 100μm diameter and less in power transformers.

直径 100 微米的细铜线和小于直径 100 微米的电力变压器的焊料中的铅； 34。

Lead in solders for the soldering of thin copper wires of 100 μm diameter and less in power transformers.

电力变压器中直径100 微米及以下细铜线所用焊料中的铅。2009/443/EC

EC 33. Lead in solders for the soldering of thin copper wires of 100 m diameter and less in power transformers.

微米及以下细铜线所用焊料中的铅。电力变压器中直径 100 微米及以下细铜线所用焊料中的铅。

The three-dimensional electric fields of the high voltage winding of a shell type transformer arc calculated, and the insulation reliability is analyzed carefully.

还提出了运用多段规则曲线拟合的方法对大型电力变压器的高压套管均压球进行优化设计，得出了既具有了较好的工艺性又具有较好的电场强度分布的最佳的电极形状。

The research aim of this thesis is the winding end insulating structure of oil immersed power transformer 110kV . Beause of the very asymmetric electric field, the higher electric field would apeared in the oil-gap and partial charge will easily engendered in the wedge oil-gap between static ring and head block of winding end.The two-dimensional isoparametric and finite element method is used for analyzing and calculating the electric field distribution in high voltage winding end insulating structure.

本文以110kV油浸电力变压器绕组端部绝缘结构为研究对象，针对绕组端部绝缘结构中静电屏与垫块之间存在楔形油隙区，致使电场分布很不均匀，油隙区中的电场强度较高，容易产生局部放电的特点，采用二维等参元有限元法及有限元软件ANSYS电磁场分析功能对高压绕组端部绝缘结构进行电场计算分析。

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。