电力变压器

Power transformer and reactor fittings - Part 2: gas and oil actuated relay for liquid immersed transformers and reactors with conservator.

电力变压器和电抗器配件。第2部分：带储油箱的液浸式变压器和电抗器用气动和油动继电器。

The authors combine the equivalent magnetic circuit in time domain with equivalent electric circuit in frequency one,and use it to analyze and calculate the specialities of a three-phase transformer successfully.

作者将时域中变压器的等效磁路法同频域中变压器的等效电路法有机地结合在一起，成功地用于分析和计算GIC作用时三相电力变压器的特性。

These are widely used in: micro-wave oven transformer, three-phase electric power, low-voltage control transformer, machine tool control transformer, neon light transformer, rectifier in lamps, electric soldering machine, washer double thermoelectricity machine, rectifier, wide screen color degaussing turn, kitchen electric machine, magnetic mine choosing facility, auto spare part, motor car spare parts, electric motor car, and wire and cable, fan jar, inverted power source, UPS power source, water pump electric machine, air-compress electric machine, disk wire, and so on.

公司的主营业务为漆包圆铝线，漆包圆铜线，铜包铝线和裸铝丝的制造和销售，主导产品为220级聚脂复合聚酰亚胺漆包圆铝线、铜包铝线和裸铝线等，广泛应用于：微波炉变压器、三相电力变压器、低压控制变压器、洗衣机双热电机、整流器、大屏幕彩电消磁线圈、厨房电机、磁矿选设备、汽车备件及电线电缆等。

Existing principles of transformers main protection, especially in criterions of magnetizing rush current, are analyzed deeply in this paper. The author points out questions in existence, and describes a new method based on the sum of positive sequence active power flowing into transformers from each terminal.

本文就现有的电力变压器主保护原理，特别是各种励磁涌流判据，进行了较深入的分析，指出了存在的问题，并提出了新的基于正序功率的变压器纵差保护原理。

Third, based on the example of over proof on-load loss in 180MVA/220kV power transformer, the eddy loss in winding is analyzed with the leakage flux element software. Some conclusions with practical use are given. In order to reduce the load loss, primarily we should reduce radial leakage flux of transformer possibily.

运用漏磁场分析软件，以180MVA/220kV电力变压器负载损耗超标为例，进行详细分析，提出有工程实用价值的结论：降低变压器负载损耗，从根本上应尽可能减少变压器辐向漏磁。

For this reason, the old methods can not fally meet the need of engineering practical application.3 By analyzing the principle and expound the methods of thecand the gray relationship clustering, the gray clustering matrix and method are presented.The gray clustering is a method that gather some obseration quotas or obseration objects to be some definable classification according to the gray relationship clustering matrix or gray albescent authority function.

3分析了灰色白化权函数聚类和灰色关联聚类的原理并阐述了其具体方法，提出了诊断变压器内部故障的灰色聚类模型和方法，灰色聚类是根据灰色关联矩阵或灰色白化权函数将一些观测指标或观测对象聚集成若干个可定义类别的方法；对结构复杂的大型电力变压器等电气设备的故障诊断，首要的问题是如何根据反映变压器故障的特征量指标来正确判断待诊设备是哪一类故障。

Power transformers are important facilities in power system. They are used in electricity generating transmitting distribution and other taches of power system.

电力变压器是电力系统中的重要电气设备，它在电力系统的发电、输电、配电等各个环节广泛使用，因而其安全运行关系到整个电力系统能否连续稳定的工作。

The power transformer is a very important equipment in power system.

电力变压器是电力系统中十分重要的电器设备，它的安全运行，直接关系到电力系统能否连续稳定地工作。

Strict management,creative spirit,super quality,perfect service and consumers'satisfaction are our destination.we have got the ISO9001 authentication,and the honor of "good promise-keeping enterprise"and "enterprise with good product quality".the products we have developed by ourselves such as the sh11-m anti-crystal alloy transformer,35kv transformer and zgs9 assembled transformer have been identified as the high-tech products,and our company is also entitled as the high-tech enterprise.our products are sold to many provinces and areas such as anhui,guangdong,hebei,xinjiang etc.

严格管理、不断创新、卓越品质、顾客满意、优质服务是我们立厂之本，近年来，公司通过ISO9001质量体系认证，获得省级重合同守信用企业，质量信得过企业称号，自行研制开发了SH11-M型非晶合金变压器，35KV电力变压器，ZGS9型组合式变压器，获得高新技术产品称号，同时，本公司被授予省高新技术企业，专、精、特、新企业。

There is larger clearance between S9-M power transformer terminal box lower side and transformer heat-radiation fi ns, foreign objects are easy to get into terminal box to make short circuit between phases and cause transformer tripping or damages.

S9-M电力变压器接线端子箱下面与变压器散热片之间存在较大空隙，外界物体容易进入端子箱内，造成相与相之间短路，导致变压器跳闸或损坏。

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。