1 250 kV·A三相高温超导变压器的系统集成与试验

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摘要

对1 250 kV·A/10.5 kV/0.4 kV三相高温超导变压器的系统设计、集成、试验与并网示范运行进行了研究。该超导变压器的一次侧绕组为螺线管型,二次侧绕组为饼式线圈结构,均采用Bi2223/Ag铜合金加强高温超导带材制备;铁心为三相三柱式,采用取向硅钢片叠成;低温恒温器带有室温孔,采用耐低温的玻璃钢制作。测试表明,该超导变压器的空载损耗为2 319.2 W,空载电流为0.254%,短路阻抗为5.6%,负载损耗为249 W。此外,对一、二次侧之间的主绝缘进行了35 kV/1 min/50 Hz工频耐压测试,测试最大泄漏电流12.6 mA;对一次侧绕组纵绝缘进行了负向75 kV/1.2 μs/50 μs全波雷电冲击电压测试。完成相关测试后,该超导变压器于2014年9月9日开始并网示范运行,长时间运行可靠。

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	马韬
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关键词 ：高温超导变压器, Bi2223/Ag超导带材, 变压器测试

Abstract：

A 1 250 kV·A/10.5 kV/0.4 kV three-phase high temperature superconducting (HTS) transformer has been designed, integrated,tested and grid-connection demonstrated.The windings of the HTS transformer are made from copper alloy enforced Bi2223/Ag tapes,and the structures of the primary and secondary windings are solenoid and double-pancake,respectively.The three-phase three-limb core is composed of oriented silicon sheet steel,and the cryostat is made of low-temperature resistant glass fiber enforced plastics with room temperature bore.According to the tests,the no-load loss is 2 319.2 W,the no-load current is 0.254%,the short-circuit impedance is 5.6%,and the average load loss is 249 W.Besides,the maximum leakage current between primary and secondary windings is about 12.6 mA under the power frequency voltage withstand test of 35 kV/1 min/50 Hz,and the negative full wave lighting impulse test with a peak voltage of 75kV/1.2 μs/50 μs from the primary winding is carried out.The grid-connection demonstration of the HTS transformer was carried out since September 9th,2014 and is reliable until now.

Key words： High temperature superconducting (HTS) transformer Bi2223/Ag hermetic tapes transformer test

收稿日期: 2015-06-17 出版日期: 2016-11-21

PACS:

TM41

基金资助:

国家自然科学基金(61403361,51377154,51477168)和甘肃省科技重大专项计划(1302GKDD010)资助项目。

作者简介: 马韬男,1984年生,博士,助理研究员,研究方向为超导电力技术与信号处理。E-mail:taom@bjtu.edu.cn(通信作者)朱志芹女,1979年生,硕士,高级工程师,研究方向为超导电力设备测控技术。E-mail:zzqbit@mail.iee.ac.cn

引用本文:

马韬,朱志芹,邱清泉,胡磊,滕玉平. 1 250 kV·A三相高温超导变压器的系统集成与试验[J]. 电工技术学报, 2016, 31(21): 188-195. Ma Tao,Zhu Zhiqin,Qiu Qingquan,Hu Lei,Teng Yuping. Integration and Tests of the 1 250 kV·A Three-Phase High Temperature Superconducting Transformer. Transactions of China Electrotechnical Society, 2016, 31(21): 188-195.

链接本文:

https://dgjsxb.ces-transaction.com/CN/Y2016/V31/I21/188

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