Enin

pp. 145-161

pp. 154-177

pp. 120-139

To ensure reliable operation of electric power systems it’s necessary to analyze and evaluate the inventory of dynamic stability of synchronous generators under large perturbations. In this paper the authors consider a methodology for analysis and evaluation of dynamic stability a feature of which is sharing high quality (the method of Lyapunov functions) and numerical methods. The authors propose an approximation method with the use of the interpolation polynomial to reduce computational costs and to carry out more accurate calculation of the critical value of the Lyapunov function. This method can improve accuracy of results to assess dynamic stability and make a more grounded choice of states of power systems and configuration of emergency automation systems.