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一、我国非晶合金铁心的应用和技术发展阶段非晶合金带材作为绿色节能型的高新技术材料,相比传统硅钢片运用于配电变压器,更具高效节能、环保的优势,已经得到了国内外用电企业的广泛应用和认可。作为非晶合金变压器的核心部件——非晶合金铁心,在整个从非晶合金原材料的生产到非晶合金变压器制造及运用的产业链中,起着承上启下的关键作用。随着原材料、非晶变压器的发展,非晶合金铁心的制造技术经历了几个阶段历程。第一阶段,非晶合金基础材料和应用的技术研究期我国早在20世纪70年代中期 相似文献
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《中国新技术新产品》2017,(5)
近年来,随着社会的发展以及科学技术的进步,使我国电力事业在实际的运行过程中获得了长足的发展。随着我国绿色发展以及可持续发展等观念的出现,使得电力事业逐渐加强了对于能源的节约。基于此,相关部门逐渐加强了对于新型节能型变压器的使用。目前,立体卷铁心与非晶合金变压器的技术在实际的使用过程中不仅缓解了国家电力紧张的问题,还进一步推动电力企业在运行过程中获得更高的经济效益以及社会效益。本文基于此,以平面非晶合金变压器与立体卷铁心非晶变压器的使用为例,分析探讨了其在实际的使用过程中所具备的经济性能。 相似文献
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非晶合金材料具有高饱和磁感应强度、矫顽力小、损耗低的优点,运用于电力变压器中,其高效、节能、环保的效果已经被电力行业所认可。但在2009年前,我国整个行业市场上非晶合金变压器用的非晶合金带材,几乎全部是日本的日立金属公司所生产。2010年,我国安泰科技公司具有自主 相似文献
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非晶合金铁心电力变压器是目前节能效果较好的新型变压器,但是由于非晶合金材料具有对机械应力敏感的特性,如果设计不规范、制造不合理、运输不当或安装不规范等环节出现问题,将会增大非晶合金铁心变压器的空载损耗,从而影响其节能效果。本文通过试验的方法模拟非晶合金铁心电力变压器的各种安装,运输、运行情况,通过分析各种不同情况下其空载损耗,为制定相应的政策提高其节能效果提供理论依据。 相似文献
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非晶合金闭口立体卷铁心采用多段非晶合金带材连续卷绕而成,由于每段非晶合金带材卷绕长度和宽度不同,损耗、片厚、叠片系数等参数存在差异,非晶合金铁心产品性能又受到生产工艺的影响,因此无法直接通过非晶合金带材性能控制非晶合金铁心的空载损耗大小,导致非晶合金铁心空载损耗性能离散度较大。本文提出基于非晶合金带材损耗性能估算非晶合金闭口立体卷铁心成品空载损耗值的方法,为从源头匹配到符合非晶合金铁心空载损耗性能需求的非晶合金带材提供了一种可行性方案。 相似文献
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文章针对非晶合金材料的特点及非晶合金干式变压器的特点,对非晶合金干式变压器的环保性能及经济效益做详细介绍。 相似文献
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Bizhan Mehrvarz Fatemeh Bahadori Saeed Zolfaghari Moghaddam 《Advanced Powder Technology》2019,30(2):221-226
A transformer is an electrical device that transfers electrical energy between windings by electromagnetic induction while producing a considerable amount of heat in circuits. The heat produced in windings is removed by an appropriate heat transfer fluid such as liquid dielectrics. The cooling and insulating of a liquid dielectric depend on the properties of the oil filling the transformer. One of the approaches to enhance the thermal and dielectric properties of transformer oil is employing an appropriate nanoparticle in a transformer.In this paper, a three-phase distribution transformer is simulated three-dimensionally in order to study the heat transfer efficiency for pure oil (single phase) and nanofluid (TiO2 nanoparticles- transformer oil). For both models, the electromagnetic field in solid sections and heat transfer in fluid and solid sections of the transformer are simultaneously investigated. The simulation results show that the presence of TiO2 nanoparticles in the transformer oil increases the heat transfer coefficient, i.e. adding 1% (vol/vol) of TiO2 nanoparticles to the transformer oil increases the Nusselt number from 2.17 to 2.49, while the maximum temperature of transformer components decreases from 47.20?°C to 43.05?°C. 相似文献
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Amorphous alloys are prepared in continuous ribbon form by rapid quenching directly from the melt. In particular, the process of chill block melt-spinning involves the continuous impingement of molten alloy against a rapidly moving substrate surface. Principles of chill block melt-spinning are presented with regard to the formation of continuous, rapidly-quenched amorphous alloy ribbon. The effects of numerous process variables on sample geometry and physical properties are examined through experimental results obtained by the author and by other researchers. Principles of narrow ribbon manufacture are extended to describe means of fabricating wide ribbon. Manufacturing problems unique to extended runs and potential solutions are cited. Effects of process parameters on magnetic and physical properties of as-cast samples are discussed. 相似文献
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城市环境噪声污染控制途径探讨 总被引:5,自引:1,他引:5
通过分析近年来太原市区域环境噪声变化规律,计算城市环境噪声与其影响因素的相关系数,表明交通噪声和生活噪声是影响城市区域环境噪声的主要因素,探讨控制噪声污染的途径。 相似文献
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The kinetics of the amorphous-to-crystalline transformation were studied in amorphous germanium (a-Ge) and its alloys with aluminium, silicon, indium, copper, iron, nickel, gallium and tin by using isochronal and isothermal annealing of the room temperature resistivity, differential thermal analysis and electron microscopy measurements. It was shown that the transformations in a-Ge and a-Ge alloy films are nucleation and growth controlled. The activation energy of 3.0 eV obtained for the amorphous-to-crystalline transition in a-Ge was found to decrease on alloying with metals, and the decrease depended on the nature of the alloying element. 相似文献