CONDITIONS OF STATIC STABILITY OF LONG-DISTANCE POWER TRANSMISSION-LINES WITH CONTROLLED SHUNT REACTORS

The paper describes a simplified analysis of the steady-state stabilit y conditions of a long-distance power transmission line with controlle d shunt reactors and its physical interpretation. It is shown that the standard condition for ensuring static stability of an idealized mode l of a system (with no allowance for transients or active resistances in the stator circuit), connected with the need to fulfil the requirem ent of a positive leading coefficient of the characteristic equation o f slightly disturbed motion, is none other than the condition of manif estation of generator asynchronous self-excitation, which in practice cannot be suppressed. (C) 1997 Elsevier Science Ltd. All rights reserv ed.