Mode Selective Damping of Electromechanical Oscillations in Power Systems Considering Time Delay Uncertainty of Input Signals

摘要

This paper presents the design of an H_∞-based local decentralized power system stabilizer (PSS) controllers, using selected suitable remote signals from the whole system as supplementary inputs, for a separate better damping of specific inter-area modes, considering uncertainty in time delay. The wide area or global signals are taken from suitable remote network locations where the oscillations are well observable. The PSS controller uses only those local and remote input signals in which the assigned single inter-area mode is most observable and is located at a generator which is most effective.