请看看这份EMTP输出结论说的是什么意思？
1 ) -------------------------------------------------------------------------------------------------------------------------------Statistical distribution of peak voltage at node"X0002A". The base voltage for per unit printout isV-base = 6.53197300E+05
Interval voltage voltagein Frequency Cumulative Per cent
number in per unit physical units (density) frequency .GE. current value
22 1.1000000 7.18517030E+05 0 0 100.000000
23 1.1500000 7.51176895E+05 27 27 77.500000
24 1.2000000 7.83836760E+05 51 78 35.000000
25 1.2500000 8.16496625E+05 39 117 2.500000
26 1.3000000 8.49156490E+05 3 120 .000000
Summary of preceding table follows: Grouped data Ungrouped data
Mean = 1.18250000E+00 1.18075096E+00
Variance = 1.58193277E-03 1.50641231E-03
Standard deviation = 3.97735185E-02 3.88125278E-02
上面的结论是做操作过电压仿真计算出来的，采用统计开关按120次正态分布。请问这里面frequency和.GE. current value是什么意思？还有最后四行Grouped data和Ungrouped data有什么区别？Mean、Variance和Standard deviation代表了什么？谢谢各位大侠指教！::lol:: 回复 1# zfwlyl
这些都是概率论里的基础参数，专业词汇我也都忘了，你看一下工数里概率统计的书就明白了
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