电力变压器

After analyzing the working character of the transformer in details and absorbing the advantages in other power transformer protection, a scheme which is fit to power transformer of 35kV or below voltage ratings is put forward.

根据这一类电力变压器的运行特点，吸取以往各种保护方法的长处，提出了一套适合于35kV及以下电压等级的电力变压器保护方案。

This dissertation gives a special research in microcomputer relay protection for power transformer of 110kV or below voltage ratings, which based on widely summarizing the theory of power system relay protection and its advanced trend. After analyzing the working character of the transformer in details and absorbing the advantages in other power transformer protection, a scheme which is fit to power transformer of 110kV or below voltage ratings is put forward.

本文在全面介绍和评述电力系统微机保护原理及其发展趋势的基础上，对电力系统中大量应用的110kV及以下各电压等级的变压器保护进行了专门研究，根据这一类电力变压器的运行特点，吸取以往各种保护方法的长处，提出了这类电力变压器保护方案。

Company main products has: 35KV class the following types of electrical transformers, single-voltage devices match, S 9, S 11 series three-phase distribution transformer, SH15 Distribution Transformer Amorphous Alloy, SC 10, SG 10 series dry-type transformer, American box changed, CKSC, CKSG Series Dry-type iron core reactor, filter reactor, CKSK dry-type air-core reactor, rectifier, inverter, energy conservation, compensation, filtering, Furnace, Salt Bath furnace and other industries with a variety of isolation, autotransformer, reactor, product sales at home and abroad.

公司主要产品有：35KV级以下各种电力变压器，单相配电压器、S9、S11系列三相配电变压器、SH15非晶合金配电变压器、SC10、SG10系列干式变压器、美式箱变、CKSC、CKSG系列干式铁芯电抗器、滤波电抗器、CKSK干式空心电抗器，整流、变频、节能、补偿、滤波、电炉、盐浴炉等行业用各种隔离、自耦变压器、电抗器，产品国内外销售。

Based on a summary of main work in the field of analyzing impulse voltage distribution on normal transformer windings by computer over last several years, a new method for building up the equivalent circuit and calculating equivalent parameters of converter transformer is given in this paper. Meanwhile , a new method for calculating inductance parameters is given also .

本文在回顾总结国内外几十年来普通电力变压器波过程计算工作的基础上，从工程实际应用的观点出发，论述了换流变压器与普通的变压器在电磁性能、绝缘结构方面的不同之处，提出了换流变压器绕组波过程的等值电路和等值参数的计算方法，同时给出了一种新的电感参数的计算方法。

A power transformer also produces a secondary voltage directly proportional to its primary voltage; the difference between a potential transformer ang a power transformer is that the potential transformer and a power transformer is that the potential transformer is designed to handle only a very small current.

同时生产的电力变压器二次电压成正比，其主要电压；之间的潜在昂一电力变压器变压器不同的是，潜在的变压器和电源变压器的是，电压互感器的设计处理只有一个很小的电流。

In this paper, their origin and frequency spectrum characteristics were analyzed and a new digital filtering method based on the transversal inhibition effect of MAXNET was proposed.

电力变压器局部放电在线监测技术是一门综合性的新技术，由于在线监测的对象是正在运行中的电力变压器，因此对及时准确了解变压器绝缘状况有着十分积极的意义。

Beijing Group grows out of Beijing BeiErBian Transformer Co.,ltd.,in2002.the BeiErBian Transformer Corporation merged BeiErBian Scientific Technology Co.,ltd、Shanghai First Transformer Corporation ,for establishing trans-trade group,presently,our corporation has become designated producer authorized by State Power Corporation and State Mechanical Bureau,it is specialized in producing SH15、SCB9、SCB10、SG10、S9、S10、S11 series power transformer、mining transformer、rectifier transformer、amorph ous alloy distribution transformer、box type substation etc.

中国 北二变集团总部设在北京，主要围绕电力设备、太阳能新能源和房地产开发、投资等畅i、产业，集团总部以设计、研发、销售、财务管理等为中心，主要生产基地为南京、浙江，专业生产SHl5、SCB9、 SCBl0、SGl0、S9、S10、S11系列电力变压器、矿用变压器、整流变压器、非合金变压器、箱式变电站等产品。

A data precessing method is provided through constructing the power transformer fault information data warehouse, based on analyzing and reorganizing the various existing data sources, the transformer failure diagnosis and early failure predication can be benefit from OLAP (On-Line Analysis Processing) and data mining technology.

为了进行变压器状态和故障自动预测，以及便于维护人员对于变压器状态进行人工预测，提出了构建电力变压器数据仓库的数据处理思想，在对有关变压器信息的多种数据源进行分析和重新组织的基础上，利用联机分析处理和数据挖掘技术，可对变压器故障诊断和早期故障预测起到积极作用。

On the basis of instantaneous forced analysis to short circuit of power transformer and numerical value calculation using low voltage impulse analysis, the paper presents the essentiality of winding distortion after short circuit of power transformer. By contrasting the three main ways of the world such as low-voltage impulse、 short circuit impedance analysis and frequency response analysis , FRA is adopted for distortion testing. Then we design a new testing instrument of transformer winding distortion—testing system of transformer winding distortion.

本文首先在对电力变压器短路时的瞬时受力分析及所受电磁力的有限元法的数值计算的基础上，论证了电力变压器短路以后进行绕组变形测试的必要性；然后通过比较的方法对目前国内外主要使用的三种方法：低压脉冲法、短路阻抗法和频率响应法，进行了一一对比，并根据对比结果，确定在本课题中使用频响法；最后在理论研究的基础上，设计出了一种新型的变压器绕组变形测试仪——电力变压器绕组变形测试系统。

Main research content includes:1 The relationship between common faults and the dissolved gases in the transformer oil are analyzed. Been exposed to the effects of heat and electricity, the oil and the organic insulation material of the oil-filled transformer which is running will be aged and decomposed gradually, several kinds of gases will be produced, moreover the components and contents of dissolved gases are tied up to the type and degree of the fault.

主要研究内容有：①电力变压器运行中常见故障与油中气体关系研究，对于运行中的充油变压器：在热和电的作用下，变压器油和有机绝缘材料将逐渐老化和分解，产生多种特征气体，而特征气体的组分含量与故障类型及故障严重程度有非常密切的关系，变压器油中溶解气体的成分和含量能有效体现运行变压器内部的绝缘故障情况。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。