基于最小二乘法的行波启动元件新算法  

Traveling wave start-up components new algorithms Based on least square method

作　　者：滕淑芬 

机构地区：[1]上海吉亿电机有限公司,上海201600

出　　处：《大众科技》2012年第3期50-53,共4页Popular Science & Technology

摘　　要：文章提出了利用小波变换进行故障暂态信号奇异性检测的新方法,分析了目前的基于Lipschitz系数的行波启动元件算法,指出其最主要的缺点是只利用相邻尺度的WTMM或WTMS比值来确定Lipschitz系数。而通过拟合各尺度的数据,采用基于最小二乘法的Lipschitz系数进行估算。ATP-EMTP仿真结果表明,改进算法能够更精确的分析故障信号的奇异性。A new method of fault transient signal singularity detection was put forward by using wavelet transform in this paper,based on the analysis of the current Lipschitz coefficient of the traveling wave start-up component algorithm,most major disadvantage which determined the Lipschitz coefficient by using only the adjacent scale WTMM or WTMS ratio was pointed out.Through fitting different scale data,the method was estimated,based on the Lipschitz coefficient of the least squares.ATP-EMTP simulation results show that fault signal singularity was more accurate ananlyzed through improved algorithm.

关 键 词：超高速保护 启动元件 小波变换模极大值 奇异性检测 最小二乘法 

分 类 号：O241.2[理学—计算数学]