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小波分析--黄变换程序
- 首先,找出 上所有的极值点,然后用三次样条函数曲线循序连接所有的极大值点,得到信号 的上包络线 ,采用同样的方法连接所有的极小值点,得到 的下包络线 。循序连接上、下两条包络线的均值可得到一条均值线 : (7-1) 再用 减去 得到 : (7-2) 如果 满足IMF的两个条件,则 即为第一阶IMF,一般来说, 并不满足条件,此时,
floc
- 本程序为零序电流小波变换求首波头极性及模值大小原理:故障线路的波头极性与非故障线路相反。-This procedure is zero sequence current first wave wavelet transform modulus of the first polarity and the size principle: the first wave of fault lines fault lines and non-polar opposite.
choicephase
- 故障突变量计算 12point滤序,需改为根据N自动确定滤序公式 设置故障突变量单相定值 设置故障突变量相间定值 设置故障突变量负序\零序电流定值- Fault calculation 12point mutations order filter is required to determine the filter order based on the formula N automatically set the amount of single-phase
single_end_fault_location
- 单端频域法故障测距程序,采用零序电流相位修正法,精度较好-The single-ended fault location procedures using frequency domain method with good precision
newjidianqi
- 本文利用编写的MATLAB软件结合解析法证,分析了一种新型的接地距离继电器在系统振荡时再发生单相经过渡电阻接地短路时的动作特性。该接地距离继电器的动作判据是通过比较故障后测得的母线电压、补偿电压、零序电流和负序电流四个量的相位关系以确定继电器的动作行为情况 -In this paper, written in MATLAB software analysis and forensic analysis of a new type of ground distance relays in th
xiaodianzu_gaozujiedi
- 模拟10kV配电网小电阻接地系统高阻接地故障的仿真模型,可测量各出线的零序电压、零序电流-The simulation model of the high resistance grounding fault of the small resistance grounding system of the 10kV distribution network is simulated, and the zero sequence voltage and zero sequence current o