220 kV电阻型高温超导限流器高压套管研制  

Design and Fabrication of High Voltage Bushing for 220kV Resistive High Temperature Superconducting Fault Current Limiter

作　　者：黄勇 马韬[2] HUANG Yong;MA Tao(Jiangsu Zhongtian Technology Co.,Ltd.,Nantong 226010,China;School of Electrical Engineering,Beijing Jiaotong University,Beijing 100044,China)

机构地区：[1]江苏中天科技股份有限公司,江苏南通226010 [2]北京交通大学电气工程学院,北京100044

出　　处：《电工技术》2020年第3期121-123,126,共4页Electric Engineering

基　　金：中国南方电网重大科技专项（编号SZKJXM20170410）

摘　　要：220 kV电阻型超导限流器的高压套管用于实现超导线圈与外部电网的电气连接,与此同时满足从液氮温区(77 K)至室温环境的温度过渡。设计的高压套管额定传输电流为交流1.5 kA,额定电压为220 kV;套管采用电容式复合绝缘结构,包含30层电容屏;设计的低温端运行温度为70 K,运行工作压力为0.5 MPa。试验结果表明,研制的套管满足395 kV/1 min短时工频耐压、950 kV雷电冲击耐压和750 kV操作冲击耐压。The high voltage bushing of 220 kV resistive superconducting current limiter is used for the electrical connection between superconducting coil and external power grid,at the same time to realize the temperature transition from liquid nitrogen temperature(77 K)to room temperature environment.The rated transmission current of the high-voltage bushing is 1.5 kA and the rated voltage is 220 kV.The bushing adopts a capacitive composite insulation structure with 30 capacitive screens.The operating temperature of the low-temperature terminal is 70 K and the operating pressure is 0.5 MPa.The experimental results show that the developed bushing meets the requirements of 395 kV/1 min short time power frequency withstand voltage,950 kV lightning impulse and 750 kV operation impulse withstand voltage tests.

关 键 词：高温超导限流器 套管 低温 高电压 

分 类 号：TM725[电气工程—电力系统及自动化]