In this paper, the use of the supplementary controller of a unified power flow controller (UPFC) to damp low frequency oscillations in a weakly connected system is investigated. The potential of the UPFC supplementary controllers to enhance the dynamic stability is evaluated by measuring the electromechanical (EM) controllability through singular value decomposition (SVD) analysis. Individual d...

We present a new method of a small-signal stability analysis for power systems with parametric uncertainties in load characteristics. These uncertainties must always be considered in a power system stability assessment since a power demand changes constantly and a precise composition of the electrical loads is usually unknown. The proposed method is based on an iterative algorithm which determi...

This paper presents an approach for designing Unified Power Flow Controller (UPFC) using Bacterial Foraging Algorithm (BFA) for damping low frequency oscillations in a power system. The problem of UPFC-based damping controller is formulated as an optimization problem according to the eigen value-based objective function comprising the damping factor, and the damping ratio of the un-damped elect...

In the last decades, various events have shown that electromechanical oscillations are a major concern for large interconnected Alternative Current (AC) power systems. DC segmentation - method consists in turning AC grids into set of asynchronous clusters linked by Direct (DC) links is promising solution to mitigate this and other issues. However, no systematic procedure given system exists so ...

Renewable energy sources bring to fore the significance of power electronics and corresponding control. The topic of wind turbine fault-tolerant control has emerged as a promising line of research for improving their market competence. The paper presents summarized control of wind turbine converter with a fault-tolerant control extension for generator electromechanical faults, based on a proper...

The low frequency electromechanical oscillations have been observed in many power systems and have resulted in system separation on several occasions. The main objective of this paper is to damp out the power angle oscillations of a two-area power system using Power System Stabilizers (PSSs) and Static Synchronous Series Compensator (SSSC) controllers. In this paper, the damping performances of...

This paper is concerned with control-based damping of friction-induced self-excited oscillations that appear in electromechanical systems an elastic shaft. approach does not demand additional measurements or observer design. The control system provides the angular velocity and via combination a parallel feed-forward compensator (PFC) adaptive λ-tracking feedback control. PFC designed to stabili...

In this paper, we study the oscillation of nonlinear fractional nabla difference equations of the form [Formula: see text]where c and α are constants, [Formula: see text] is the Riemann-Liouville fractional nabla difference operator of order [Formula: see text] is a real number, and [Formula: see text]. Some sufficient conditions for oscillation are established.

Impact of Active Distribution Network Cell (ADNC) Study on Power System Oscillation requires modelling of power system components. The system covers the well knows Two AreasSystem benchmark which studies low frequency electromechanical oscillations in large interconnected power system. This study examined the effect of passive cell on Active Distributive Network Cell (ADNC). The method adopted ...