Determination of probabilistic descriptions and stochastic processes of changes loads

The correct initial data are very important for model adequacy, especially for load curves. Probabilistic evaluations and statistical analysis produce for determination of the conditions stochastic process of change loads. Basic properties of stochastic function are mathematical expectation, dispersion, correlation function, probability density. Loads of most current-using equipment are changing with time, it is impossible analytically to represent, therefore loads represent piecewise linear approximation in a rectangular system of co-ordinates. Diversity of loads is feature of stationary power engineering, which has significant difference in technology processes. Therefore, load curve of stationary factory is group and non-repetitive.