The optimal design of large transformers with combinatorial optimization and with the reactance voltage drop as the constraint is described.
本文运用组合优化方法进行大型变压器的优化设计，提出了电抗约束判别条件。
The step up transformers for Three Gorges project are EHV extra large transformers. Their reliability will affect the economic benefits of the project directly.
三峡电站升压变压器属于超高压特大型变压器，它的安全可靠性直接影响三峡电站的经济效益。
Through the analysis of some neutral-point insulation faults of large transformers, the necessity of on-site examination on neutral-point insulation of large transformers is discussed.
笔者通过对几例大型变压器中性点绝缘故障实例的分析，说明了现场考核变压器中性点绝缘的必要性。
Large current transformers usually work in the environment of strong stray flux, so some effective methods must be taken to shield them from electromagnetic interference.
大电流互感器通常工作于强杂散磁场环境，必须采取有效措施来保护其不受外界电磁干扰。
As a novel shielding way, shielding windings have been widely used in the large current transformers.
屏蔽绕组作为一种新颖的屏蔽方式，在大电流互感器中得到了广泛的应用。
The structure and function of the field testing and diagnostic system of the large transformer insulation condition are introduced. The diagnostic techniques for transformers are presented.
介绍了一个大型变压器绝缘状态可现场测试诊断系统的结构和功能，以及应用该系统对变压器进行诊断的技术与手段。
A kind of three-phase models of three-winding transformers were presented which overcame some drawbacks in the existent models such as the large error or high dimension and singularity.
本文提出了三绕组变压器的一种新的三相模型，这种模型避免了现有模型存在的误差大或维数高以及奇异性问题。
As the fault information of large power transformers has characteristics such as, complementarity, redundancy and uncertainty, the basic ideas of information fusion are introduced in this paper.
由于大型电力变压器具有互补性、冗余性和较强的不确定性等特点，该文将信息融合的基本思想引入到变压器的故障诊断中。
Aiming at early stage latent faults of EHV large capacity transformers, a new fault diagnosis method based on mathematical morphology combined with multiple neural networks is presented.
针对超高压、大容量电力变压器的早期潜伏性故障，提出了一种基于数学形态学融合多神经网络的故障诊断新方法。
Because of the poor power factor and other concerns regarding a large phase back, multiple tap transformers are recommended even when the control device is a SCR.
由于缺乏能量的因素还有关于多了一大段的关系，即使当使用可控硅整流器时也推荐使用多插孔变压器。
In this paper, Fault Tree Analysis Method is used for analyzing and calculating various failures of large power transformers in our country.
本文应用故障树分析法对我国大型电力变压器的各种故障进行了分析计算。
South Korea will phase out the tariffs of motors and transformers, and phase out the tariffs of the handbags, golf clubs and other large household items imported from China in 15-20 years.
韩国将分阶段取消电动机、变压器关税，并在15到20年内逐步取消手提包、高尔夫球杆等自华进口量较大的生活用品关税。
The low voltage side of the main transformers in the substations of large and middle-sized plants USES operation mode in the single-bus sections.
大、中型工厂变电所主变压器低压侧常采用单母线分段的运行方式。
For the parallel inverter system without output isolation transformers, the difference of DC components of the output voltage can cause large DC loop-current among modular inverters.
对于无输出隔离变压器的逆变器并联系统，各模块输出电压直流分量不一致会在模块间产生较大的直流环流。
For a parallel inverter system without output isolating transformers, discrepancy in DC biases contained in the output voltage of each module can cause large DC circulating current among inverters.
对于无输出隔离变压器的逆变器并联系统，各模块输出电压直流分量不一致会在模块间产生较大的直流环流。
Geomagnetically induced current (GIC) will affect the secure operation of large power transformers.
地磁感应电流(GIC)会对大型电力变压器的安全运行产生不利影响。
In order to protect transformers of the large generator-transformer unit in power systems, the paper puts forward a kind of new principle of transformer protection based on break-variable of current.
本文针对当前电力系统中大型发变组保护中的变压器保护提出了一种基于电流突变量的保护新方案。
However, the power transformers, as an important part in the equipment, mainly is electromagnetic transformers with a large volume.
电源是这些电子设备中的一个重要部件，目前所用变压器多为体积较大的电磁式变压器。
We discuss the application of transformer down oil pumps in large-and-medium-scale electric transformers here and demonstrate the design, experiments and applications of electric cooler transformers.
文章阐述了变压器冷却油泵应用于大中型电力变压器及电炉变压器中的设计及试验与应用。
The first batch of companies in the country to introduce the world's advanced functions, superior performance of equipment, large-scale production of high-quality dry-type transformers.
公司在全国首批引进了世界先进、功能齐全、性能优越的设备，大规模生产高品质的干式变压器。
It was concluded that with good weatherability, gloss, fullness and protection property, these coatings met the demands of large-scale transformers for application technology and protection property.
结果表明，产品的耐候性、光泽、丰满度及防护性良好，很好地满足了相关大型变压器涂装的工艺及产品防护性能的要求。
The distribution law of furan content in oil of large step-down transformers in Shanghai Grid is researched by statistical analysis. The cautions in its application are presented.
利用统计分析技术，研究了上海地区电网大型降压变油中糠醛含量的分布规律，提出了在其应用中应注意的问题。
The multi-point grounding fault of power transformer's iron-core accounts for a large proportion of all the common faults in the transformers.
论述变压器绝缘试验中温度、升压速度、极性、铁心是否接地对绝缘试验结果的影响，并分析产生这些影响的原因。
The multi-point grounding fault of power transformer's iron-core accounts for a large proportion of all the common faults in the transformers.
论述变压器绝缘试验中温度、升压速度、极性、铁心是否接地对绝缘试验结果的影响，并分析产生这些影响的原因。
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