Basic study on electrical insulation test method and electrical insulation design of HTS power devices

高温超导功率器件电气绝缘测试方法及电气绝缘设计基础研究

• 批准号: 13450114
• 负责人: HARA Msanori
• 金额: $ 10.82万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13450114/
• 关键词: High temperature Superconducting Power Devices; Electrical Insulation Technology; High Voltage Test Method; Partial Discharge Onset; Equivalent High Voltage Test Method; SC Coil for HTS Tr.; Medium Factor; Quench; 絶縁設計技術; パンケーキコイル; ターン間絶縁系; 常温等

The electrical insulation system of the high temperature superconducting(HTS) power devices is generally placed in the pool of cryogenic coolant. Moreover, the quench phenomena are inevitable in it and its dielectric strength is significantly reduced if the coolant vaporizes due to the Joule heat at the quenched part of the superconductor. Then, these two factors must be taken into the insulation design, and also considered in high voltage tests to secure the reliability of the designed electrical insulation. In the present research, the equivalent high voltage testing method at room temperature for promising HTS power devices at the stages of development, manufacturing and shipment is studied. The determination method of the equivalent insulation test voltage at room temperature is proposed and the application of the method to the HTS power devices is attempted. Especially, the basic parameter of "Medium Factor" for the estimation of the equivalent insulation test voltage is proposed and its usefulness is confirmed by experiments using modeled HTS coil elements and real coils.

高温超导（HTS）功率器件的电绝缘系统一般放置在低温冷却剂池中。此外，淬火现象是不可避免的，如果冷却剂由于超导体淬火部分的焦耳热而蒸发，其介电强度会显着降低。那么，在绝缘设计中必须考虑这两个因素，在高压试验中也必须考虑这两个因素，以确保设计的电气绝缘的可靠性。在本研究中，研究了有前途的高温超导功率器件在开发、制造和运输阶段的室温等效高压测试方法。提出了室温等效绝缘试验电压的确定方法，并尝试将该方法应用于高温超导功率器件。特别是，提出了用于估计等效绝缘测试电压的“中因子”基本参数，并通过使用建模的高温超导线圈元件和真实线圈的实验证实了其有效性。

项目成果

原 雅則: "三重点近傍におけるガス中の部分放電開始特性の推定"電気学会論文誌. Vol.122-A, No.7. 650-657 (2002)

Masanori Hara：“三接点附近气体的局部放电起始特性的估计”，日本电气工程师学会学报，第 122 卷-A，第 7 期（2002 年）。

T.Kurihara: "Effect of Superimposed Sinusoidal Voltage on Partial Discharge Characteristics in an Artificial Air-Filled Void"Proc. of 12th Int. Sympo. on High Voltage Engineering. 1035-1038 (2001)

T.Kurihara：“叠加正弦电压对人工空气填充空隙中局部放电特性的影响”Proc。

栗原 隆史: "三重点近傍の大気圧空気中における部分放電特性の測定"放電研究. 41. 15-21 (2003)

Takashi Kurihara：“三接点附近大气中的局部放电特性的测量”Discharge Research 41. 15-21 (2003)。

M.Hara: "Estimations and Measurements of Partial Discharge Characteristics near a Triple Junction in Atmospheric Air"Proc.of XIIIth ISH. ISBN90-77017-79-8. (2003)

M.Hara：“大气中三重结附近局部放电特性的估计和测量”Proc.of XIIIth ISH。

B.Y.Seok: "Pressurizing and Sub-cooling Effects on Electrical Breakdown of LN$_{2}$ in Modeled HTS Coils"IEEE Trans. on Dielectrics and Electrical Insulation. Vol.8, No.6. 1016-1024 (2001)

B.Y.Seok：“加压和过冷对模拟高温超导线圈中 LN$_{2}$ 电击穿的影响”IEEE Trans。