Static and Dynamic Var Compensation in System Planning

This paper presents a comprehensive method for planning reactive compensation in power systems so as to maintain voltages in acceptable ranges during contingencies. The methodology allows the addition of further VAR compensation as may be economically justified. Reactive compensation considered consists of conventional shunt reactive compensation, synchronous condensers, as well as variable shunt reactive control devices called static VAR control devices. This work combines VAR optimization with static as well as with dynamic system performance evaluations. Necessary modelling of static VAR control devices for inclusion in dynamic performance programs is also given.