Frequency and active power control in islanded power systems based on the magnitude of the disturbance estimation

Abstract

Paper presents the difficulties of existing antiemergency automation when operating in islanded power system. The operation of existing anti-emergency automation is apprized from the point of view of elimination of active power deficiency or surplus. Shortages of existing anti-emergency automation as well as necessary areas for improvements are shown. New method for estimation of active power deficiency or surplus is proposed. It is based on the use of the mathematical description of the considered system to provide more accurate operation of anti-emergency automation, for instance, when shedding load or starting generation reserves. The analysis as well as possible application of the proposed method for estimation of active power deficiency or surplus is presented.Index Terms--Frequency, adaptive control, islanding.

Peculiarities of Frequency Transients in Isolated Baltic Power System

“…In the paper, frequency transients and stability conditions of isolated Baltic power system are analysed. Autonomously operating Baltic power system is considered as a small power system with large generating units and relatively low loads [3]. According to the development scenario of Baltic power system, new generators of large unit capacities will be installed till 2020.…”