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超导技术在电力系统中的应用 总被引:1,自引:0,他引:1
本文回顾了超导技术的最新发展 ,重点介绍了已经或者正在商品化的超导电缆、超导变压器、超导电机、超导限流器、超导储能器等超导电力设备及其在电力系统中的应用。 相似文献
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低温系列超导电缆是超导磁体系统的重要组成部分,其超导磁体线圈均采用CICC(Cable-In-Conduit Conductors管装电缆导体)或卢瑟福电缆等绕制而成。目前,ITER(International Thermo nuclear Experimental Reactor)装置、强磁场、加速器等大科学装置所采用的超导电缆都使用Nb Ti和Nb3Sn低温超导材料。我国通过自主研发,已掌握了低温系列超导电缆的关键技术。讨论了超导电缆的基本绞制参数,介绍了低温超导电缆的种类以及低温超导电缆的国内发展状况与应用。 相似文献
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本文阐述了超导技术的发展,通过超导技术在智能电网中的应用,分析超导电缆和超导储能装置技术在这两个领域的作用及与传统方式的比较,得出超导技术所带来的革命性的进步,并分析超导技术发展所面临的一些难题。 相似文献
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本文介绍了超导电缆材料性能以及较普通电缆在电力传输中的节能优越性,分析了我国超导电缆行业生产企业的现状,并与国际超导电缆的研发和生产企业进行了全面的比较对目前国内的超导电缆市场情况进行了分析,并对整个行业市场的前景作了预测。 相似文献
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Kazuya Ohmatsu Hiroyasu Yumura Ken-Ichi Takahashi Ken-Ichi Sato Takeshi Ueda Yoshinobu Suganuma 《Electrical Engineering in Japan》1997,120(2):8-18
Superconducting ac machines such as transformers and reactors are expected to have an important role in future electric power transport lines. In these machines, superconducting coils are wound with superconducting cables that have low ac loss, stable ac quenching current, and high normal resistivity. We have developed Nb-Ti superconducting cables with ultrafine filaments and high-resistivity matrix for these coils. One such cable is a double-stranded round structure using 0.2-mm strands with 0.14-μm filaments and Cu-30wt%Ni as a matrix material. The 50-Hz quenching current without external magnetic field exceeds 1400 Arms. The ac loss is 15 kW/m3 at a transverse external magnetic field of 0.5 T, 50 Hz, and the normal resistivity is 0.21 Ω/m at 0 T, 10 K. © 1997 Scripta Technica, Inc. Electr Eng Jpn, 120(2): 8–18, 1997 相似文献
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海上新能源发电的快速发展急需大容量高效率的海上电力传输网络与之匹配。为促进海底超导电缆的发展,需要研究局部损伤对超导电缆的影响,尤其是对其损耗特性的影响。这关系到损伤是否会导致损耗骤升而冷却系统无法及时排出多余热量,进而导致低温平衡被破坏,超导电缆无法继续工作,甚至发生进一步大范围损伤。基于陆上超导电缆建立了包含单层到多层电缆的物理模型,并使用有限元方法分析电缆的电流分布、内部磁场分布和输电损耗。通过比较损伤前后电缆损耗特性的变化,分析并总结得出了最适宜用于海底输电的超导电缆结构。结果表明,在单根带材损伤的情况下,一层和二层电缆的损耗大幅度提升,而六层电缆的损耗不到5%。因此六层电缆较为适应海底环境。 相似文献
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Katsumi Miyashita Hiroyuki Sato Mitsuhiro Arika Ryukichi Takahashi 《Electrical Engineering in Japan》2006,156(3):24-31
The NbTi superconducting strands and cables for the field winding of the 200‐MW‐class high‐energy‐density‐type superconducting generator are developed. They are composed of Cu/Cu‐10wt%Ni/Nb‐46.5wt%Ti superconducting strands and the 10‐kA (at 5 T)‐class 9‐strand compacted cables. The diameter of strands is 1.33 mm, and the 9‐strand compacted cables are 2.4 mm thick and 6.0 mm wide. In order to produce high‐current‐density NbTi strands, we made strands under controlled aging heat treatments, the total and final strains, and the strains between heat treatments, by using large‐scale extruder. Moreover, in order to produce high‐stability and low‐AC‐loss NbTi strands and cables, the matrix ratio of strands and the cross sections of strands are optimized. The current density of NbTi filaments for the four‐time‐aging manufactured 1.33‐mm‐diameter strands was JC=3150 A/mm2 at 5 T, 1150 A/mm2 at 8 T. The critical current of the 9‐strand compacted cable is 10.7 kA at 5 T. The AC losses of the final compacted cables are less than 100 kW/m3 at 5 T, 5 T/s, that is, decreased to less than half of the target of the AC loss value (< at 5 T, 5 T/s). Compared with the strand (Cu ratio 1.77), the minimum quench energy (MQE) of the strand (Cu ratio>2) increased about 40% at the operation mode current of the superconducting generator. © 2006 Wiley Periodicals, Inc. Electr Eng Jpn, 156(3): 24– 31, 2006; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/eej.20266 相似文献
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高温超导电缆具有不同于常规电缆的优越特性,已在国内外研制成功并在工程中实验和应用。介绍了高温超导体特性和高温超导电缆,简要分析了国内外高温超导电缆的研究进展、应用现状和项目实例,对高温超导电缆在城市电网的应用前景作了初步探讨。 相似文献
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我国超导技术研究进展及展望 总被引:17,自引:1,他引:17
超导技术是近40年发展起来的高技术,它在电工、交通、医疗、工业、国防和科学实验等高科技领域都有着重要的现实意义和巨大的发展前景.许多科学家认为超导技术将是21世纪具有经济战略意义的高新技术,是本世纪高新技术发展的一个重要方向.我国自20世纪60年代末即开始超导技术的研究,经30多年的努力,在超导磁体技术及其应用、超导材料研究、超导电子学以及超导基础研究方面都取得很大成绩.本文概括介绍我国在超导技术各方面的研究进展并对今后发展前景进行简要分析. 相似文献
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Takuya Kishida Takashi Kaito Eiji Haraguchi Masao Morita Yasuo Fujiwara Yoshio Kubo Shiro Nakamura Tadatoshi Yamada 《Electrical Engineering in Japan》1997,118(3):13-21
A shell-type superconducting transformer was developed for experiments using Nb3Sn superconducting cables. The designed capacity is 667 kVA (single phase), the voltage is 440/220 V, the current is 1515/3030 A and the percent impedance is 16 percent. Main features of the transformer are as follows: (1) Magnetic field in superconducting coils is decreased by increasing the number of high and low coil groups. (2) Large-scale superconducting cables are not needed when the number of high and low coil groups is increased. (3) Epoxy impregnated coils are used to withstand an electromagnetic force at 120 Hz. The Nb3Sn basic strand was manufactured by the internal tin diffusion process. The cable consists of seven insulated subcables, and the subcable consists of seven strands. The primary (HV) coil of the transformer was excited, in which the secondary (LV) coil was shortened. The primary current reached 1618 Arms without quenching, and the reached capacity corresponds to 712 KA. © 1997 Scripta Technica, Inc. Electr Eng Jpn, 118 (3): 13–21, 1997 相似文献
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有机超导材料作为非常规超导体的代表,具有广泛的应用前景。本文对有机超导的研究进展进行了综述,介绍了有机超导理论和现有的有机超导材料体系。 相似文献
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