Study on transient stability of superconducting cables

超导电缆暂态稳定性研究

• 批准号: 06452206
• 负责人: ISHIYAMA Atsushi
• 金额: $ 4.86万
• 依托单位: Waseda University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06452206/
• 关键词: superconductivity; AC Application; multi-strand cables; transient stability; normal-zone propagation property; distibuted cricuit; current redistribution; cross contact electrical resistance; 超電導; 常電導伝播特性

19941. Numerical cord for simulation of transient stability of multi-strand superconducting cables : We developed some computer codes to simulate transient behaviors of multi-strant cables such as current distribution among srands and temperature distribution in cables. We also developed a method for estimation of the current distribution among strands by using a pick-up coil system.2. Sensitive method for measurement of electrical cross contact resistance between strands : We proposed a new method adopting superconducting transformer. By this method, we could measure small cross contact resistance of about 10^<-8> OMEGA.19951. Simulation of transition to normal state in multi-strand superconducting cables : We carried out a lot of experiments to evaluate the validity of the developod computer codes and to investigate the transient behavior of multi-strand cables in quench process. From these numerical simulations and experimental results, the influences of the material properties of superconduciting strand and the thermal effect of coolant on the transient stability became evident.2. Measurement of cross contact resistance of Rutherford type cables : We adopted the proposed method to measure the cross contact resistance of Rutherford cables for SSC project.19961. Simulation of transition to normal state in multi-strand superconducting cables : We newly developed a computer code by 3D finite element analysis to investigate the temperature evolution in cross-section of a strand and to clarify the effect of copper matrix on the transient stability. From these results obtained for the term of this project, the guideline for the design and development of highly stabilized superconducting cables for AC use.2. Measurement of cross contact resistance of Rutherford type cables : We investigated the influences of curing temperature and pressure on the cross contact resistance of Ratherford cables.

19941. 用于模拟多股超导电缆瞬态稳定性的数字线：我们开发了一些计算机代码来模拟多股电缆的瞬态行为，例如股之间的电流分布和电缆中的温度分布。我们还开发了一种利用拾波线圈系统估计股线间电流分布的方法。2．测量绞线之间交叉接触电阻的灵敏方法：我们提出了一种采用超导变压器的新方法。通过这种方法，我们可以测量约10^<-8>OMEGA.19951的小交叉接触电阻。多股超导电缆向正常状态转变的模拟：我们进行了大量的实验来评估所开发的计算机代码的有效性并研究多股电缆在失超过程中的瞬态行为。从这些数值模拟和实验结果来看，超导绞线的材料性能和冷却剂的热效应对瞬态稳定性的影响变得明显。 2．卢瑟福型电缆交叉接触电阻的测量：我们采用了所提出的方法来测量SSC项目的卢瑟福电缆的交叉接触电阻。19961。模拟多股超导电缆向正常状态的转变：我们通过 3D 有限元分析新开发了计算机代码，用于研究股线横截面的温度演变，并阐明铜基体对瞬态稳定性的影响。根据本项目期间获得的这些结果，制定了交流用高稳定超导电缆的设计和开发指南。2．卢瑟福型电缆交叉接触电阻的测量：我们研究了固化温度和压力对拉瑟福电缆交叉接触电阻的影响。

项目成果

S.Iino, A.Ishiyama: "Design and characteristics analysis of superconducting tubular linear induction motor" IEEE Transactions on Applied Superconductivity. Vol.3 to be published. (1997)

S.Iino、A.Ishiyama：“超导管状直线感应电机的设计和特性分析”IEEE 应用超导汇刊。

A.Ishiyama: "Optimal Design Method for MRI Superconducting Magnets with Ferromagnetic Shield" IEEE Transactions on Magnetics. (掲載決定). (1997)

A. Ishiyama：“带铁磁屏蔽的 MRI 超导磁体的优化设计方法”IEEE 磁学会刊（1997 年出版）。

A.Ishiyama: "Optimal Design Method for MRI Superconducting Magnets with Ferromagnetic Shield" IEEE Transactions on Applied Superconductivity. 3. (1997)

A.Ishiyama：“具有铁磁屏蔽的 MRI 超导磁体的优化设计方法”IEEE 应用超导汇刊。

T.Onuki, S.Wakao, T.Hattori: "Hybrid finite and boundary element method applied to nonlinear magnetic field analysis" IEEE Transactions on Magnetics. Vol.30. 2908-2911 (1994)

T.Onuki、S.Wakao、T.Hattori：“应用于非线性磁场分析的混合有限元和边界元方法”IEEE Transactions on Magnetics。

小貫 天: "三次元有限要素法によるskewを施したラダー形リニア誘電モータの特性解析" 電気学会論文誌D. 115(掲載決定). (1995)

大贯十：“利用三维有限元法对斜梯型直线介质电机的特性进行分析”，日本电机学会会刊D.115（决定出版）（1995年）。