摘要
为了了解钠冷快堆蒸汽发生器内部流体运行状态、内部成分等不易测量的变化,引入现代谱估计AR模型法和传统经典法谱估计的周期图法、Welch改进周期图法、BT法对钠冷快堆蒸汽发生器运行产生的背景噪声原始数据进行了分析和比较。结果表明,采用AR模型法对钠水反应背景噪声进行谱估计分析效果更加理想。
In order to understand the variation of fluid operation and internal composition in the steam generator of sodium-cooled fast reactor, the AR model of modern spectrum estimation and the periodic graph method of classical spectrum estimation, Welch improved periodic graph method and BT method are introduced to compare and analyze the original background noise data produced by the operation of sodium cooled fast reactor steam generator. The results show that AR model is more effective in estimating the background noise of sodium-water reaction.
作者
曹韵奇
刘桂娟
刘志国
Cao Yunqi;Liu Quijuan;Liu Zhiguo(China Institute of Atomic Energy,Beijing,102413,China;Beijing Normal University,Beijing,100875,China)
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2019年第1期140-143,共4页
Nuclear Power Engineering
关键词
经典法谱估计
现代谱估计
AR模型法
Classical spectral estimation
Modern spectral estimation
AR model method
