Relevance. New equipment and sophisticated industrial technologies, adapted at load nodes, require an identification of static load voltage characteristics according to experimental measurements, and the correction of their coefficients in computational models. The correction is carried out as soon as static load voltage characteristics are identified, but a correction effect on limit active power flows is not practically researched, although, maximum permissible active power flows at sections depend on them directly. The slowing cause is the existing loading method, having disadvantages. Therefore, it is required to develop the automatic loading method to increase efficiency of limit mode routine calculations and scientific and practical researches. Aim. Development and testing the loading method, based on an automatic shaping the loading with an adaptive selection generator and load nodes at each step, and on the balancing trajectory. Methods. Triangular Jacobi matrix and piecewise constant function. Results. The proposed method permits to calculate limit active power flows at sections and research the effect of the correction of static load voltage coefficients on those flows. Conclusions. According to this method, the research problem relating to an evaluation of a correction effect of static load voltage coefficients on the value of limit active power flows at sections is shown, and it is revealed that this correction changes limit active power flows.