INVESTIGATION AND DEVELOPMENT OF NEWTONIAN GENERALIZED METHODS FOR ANALYZING STEADY-STATE POWER-SYSTEM REGIMES AND THEIR CONTROL.

Generalized methods of Newton type are being developed to improve the effectiveness of calculations of normal (unstressed) and various limiting steady-state regimes (ST) of electric power systems; here methods are considered in which the ST variables (phases, absolute values of node voltages, transformer ratios of transformers with regulation under load) are represented by continuous functions of one or many parameters. A special place is occupied by problems associated with improving the initial approximations of ST variables. The most rational areas of utilization of the proposed methods are investigated. To improve the reliability of the convergence of the methods and ensure maximum speed at each approximation problems of choosing the maximum permissible and optimal steps of variation in the ST variables are solved. An analytic approximation of the errors of closure of the ST equations is employed in solving the problems.