一种基于相关函数法的超导失超检测方法  

Correlation function based superconducting quench detection

作　　者：周羽生[1] 邝江华[1] 唐攀龙[1] 韦肖燕[1] 彭琢[1] 唐跃进[2] 

机构地区：[1]长沙理工大学电气与信息工程学院,湖南长沙410004 [2]华中科技大学超导电力科学技术研究与发展中心,湖北武汉430074

出　　处：《电力科学与技术学报》2009年第4期64-67,共4页Journal of Electric Power Science And Technology

基　　金：国家高技术研究发展计划("863"计划)基金(2007AA03Z243);湖南省自然科学基金(07JJ3101;06JJ2044);湖南省科技计划基金(2007FJ3008)

摘　　要：提出一种基于相关函数相位差法的高温超导体失超检测方法.利用带通滤波器提取被测信号的电压和电流基波分量,消除谐波对相关函数的干扰;对电压和电流的基波信号作相关运算,测量相位差,提高超导失超检测的灵敏度和抗干扰能力.并通过MATLAB软件中的Simulink组件进行仿真分析,验证了该方法的可行性.A quench detection method based on correlation function phase difference is proposed for high temperature superconductor in this paper. Using band-pass filter to separate the fundamental voltage and current signals from the measured signals, the harmonics interference in the correlation function is eliminated. Then the correlation operation for fundamental voltage and current signals is Carried out, the phase difference is measured, and the superconducting quench detection sensitivity and anti-interference capability are thus improved significantly. MATLAB simulation results show that this method is with feasibility and high accuracy

关 键 词：失超检测 高温超导体 相关函数法 带通滤波器 

分 类 号：TM26[一般工业技术—材料科学与工程] TM725[电气工程—电工理论与新技术]