Mode selective damping of power system electromechanical oscillations using supplementary remote signals

Trajectory-Based Supplementary Damping Control for Power System Electromechanical Oscillations

“…The control rules and parameters are usually calculated based on local information and objectives, and remain "frozen" in practical application. In recent researches on electromechanical oscillations, some remote information reflecting global dynamics is introduced as additional inputs to local damping controllers so as to enhance their performances of damping inter-area oscillations [4]- [6].…”

Mode selective damping of power system electromechanical oscillations for large power systems using supplementary remote signals

“…The residue method is derived from the modal control theory of linear time-invariant systems. The concept presented in [11] is to find the locations of local H-infinity based PSS controllers based on the amplitude gains of frequency responses of the best-suited measurement to the inputs of all generators in the interconnected system. The mode selective damping of power system electromechanical oscillations using supplementary remote signals is presented in [11].…”

“…Ref. [11] also proposes a technique for the selection of suitable local and remote feedback input signals to the controllers. For the selection of suitable local and supplementary remote input signals, the features or measurements from the whole system are pre-selected first by engineering judgment and then using a clustering feature selection technique.…”

“…Ref. [11] has applied the proposed technique on a three machine system which is too small to provide any convincing justification for the method. The power system, in practical, is large in size.…”

“…The much larger system with many choices of signal would provide a much more thorough case. In this study, the authors have applied the technique proposed in [11] to realistic large-scale multi-owner power systems such as the European interconnected power system. This paper deals with the design of local decentralized PSS controllers using remote signals as supplementary inputs, for a better damping of inter-area oscillations in a large-scale power system, in a manner that each decentralized PSS controller is designed separately for each of the inter-area modes of interest.…”