Taking into account the statistic volume of the analyzed electric supply interruptions the reducing of assumptions
application and precise of the reliability calculations results require the calculation of probability distribution of each
interruption. The estimation of the distribution hypothesis is realized in accordance with Hi – quadrant and Kolmogorov –
Smirnov distribution functions. The results of Hi – quadrant and Kolmogorov – Smirnov distribution functions correspondence are demonstrated in the way of p–values (Table II)