Wavelet-Based Power System Stabilizer

Abstract

This paper proposes a wavelet-based power system stabilizer by using both the scaling coefficient energy and the wavelet coefficient energy with border distortions of a one-cycle sliding window. The boundary scaling coefficient energy is used for real-time extraction and compensation of electromechanical oscillations in the synchronous generator, whereas the boundary wavelet coefficient energy is used for the real-time detection of electrical oscillations and for tripping the wavelet-based power system stabilizer at the fault inception time. The performance of the proposed wavelet-based power system stabilizer was assessed in an experimental power system laboratory setup and compared with a conventional power system stabilizer.Index Terms-Wavelet transform, synchronous generator, power system stabilizer, electromechanical oscillations, electrical oscillations.

Analysis, Control and Optimal Placement of Static Synchronous Compensator with/without Battery Energy Storage

“…To improve system's damping, different kinds of power system stabilizers (PSSs) are designed, such as multi-objective PSS [4], wavelet-based PSS [5] and distributed PSS [6]. In principle, the PSSs inject an additional damping signal to enhance the oscillation damping performance by controlling the excitation voltage of the synchronous generator (SG).…”

Distributed power system stabiliser for multimachine power systems

“…In [17], the authors proposed an integrated controller to replace the combination of PSS and AVR for regulating the terminal voltage of generators as well as mitigating oscillations. In [18], the authors proposed an innovative waveletbased PSS to provide more effective damping by real-time detection of electromechanical and electrical oscillations.…”

Analysis and Applicability of Heffron–Phillips Model

“…Various authors draw an incomplete generalization of similar enough results between L3OM and N7OM (e.g. [8]- [10]). This may lead to inappropriate usage of the models.…”