中文说明：
为考查各种不确定性因素对系统运行的影响，需要大量地重复性潮流计算。结合概率理论形成的概率潮流计算能够充分考虑这些不确定性因素。由概率潮流计算可以得到节点电压、电流、支路潮流的均值、方差、概率密度函数等统计特性，从而更全面地反映系统运行状况。
English Description：
In order to investigate the influence of various uncertain factors on system operation, a lot of repetitive power flow calculation is needed. The probabilistic power flow calculation combined with probability theory can fully consider these uncertain factors. The mean value, variance, probability density function and other statistical characteristics of node voltage, current and branch power flow can be obtained by probabilistic power flow calculation, so as to reflect the system operation more comprehensively.