Power System Stabilizers (PSS) are generally employed to damp electromechanical oscillations by providing auxiliary stabilizing signals to the excitation system of the generators. But it has been found that these Conventional PSS (CPSS) do not provide sufficient damping for inter-area oscillations in multimachine power systems. Thyristor Controlled Series Capacitor (TCSC) has immense potential ...

The special issue entitled “Mathematical modelling, nonlinear dynamics, bifurcation, synchronization and control of mechanisms driven by power supply,” published European Physical Journal: Special Topics (EPJST), aims to bring into discussion works involving dynamic chaotic behaviors, which are frequently found in mechanical electromechanical systems, circuits, biologically inspired stimulating...

Some disturbances can affect power system stability and generate electromechanical oscillations. In this paper, a robust controller design is presented, whose main objective to damp the oscillation modes ensure stability. order guarantee robustness of controller, singular values Relative Gain Matrix were used select most significant input- output pairs in system. The designed was low its parame...

Abstract This paper demonstrates the controlling abilities of a large PV-farm as Solar-PV inverter for mitigating chaotic electrical, electromechanical, and torsional oscillations including Subsynchronous resonance in turbogenerator-based power system. The include deviations machine speed, rotor angle, voltage fluctuations (leading to collapse), modes. During night with no solar generation, PV-...

This paper presents a new scheme of thyristor controlled series compensators (TCSC)-based damping controller for inter-area oscillations in bulk power systems based on wide area measurement system (WAMS). In this regard, the proposed provides an adaptive three-phase step through real-time working mode. first step, by proposing dynamic clustering-based technique, signals evaluate which procedure...

This paper proposes a new system-level application for monitoring out-of-step (OOS) events in power systems. As already known, amplitude-dependent frequency shift is nonlinear phenomenon of electromechanical oscillations under large disturbances. The indicates the system’s nearness to instability. tool utilizes Normal Form method identify named phenomenon, leading accelerated OOS detection. pro...

The results of low-frequency oscillations identification in the Republic Kazakhstan power grid by using a Wide Area Measurement System are presented and an algorithm for damping is proposed this paper. Analysis weakly damped inter-area revealed constant mode with frequency range 0.3‒0.4 Hz. It was determined that at these oscillations, amplitude active fluctuations along transmission line 150 M...

In stressed power systems with large induction machine component, there exist undamped electromechanical modes and unstable monotonic voltage modes. This article proposes a sequential design of an excitation controller and a power system stabiliser (PSS) to stabilise the system. The operating region, with induction machines in stressed power systems, is often not captured using a linearisation ...

Spatial oscillations in soil contaminant concentration profiles are sometimes observed, but rarely commented on, or are attributed to noisy data. In this paper we consider a possible mechanism for the occurrence of oscillatory reactant profiles within contaminant plumes. The bioremediative reactions which occur are effected by bacteria, whose rôle is normally conceived of as being passive. Here...

We consider a nanoelectromechanical system composed of carbon nanotube suspended between two normal leads and coupled to superconducting scanning tunneling microscope (STM) tip via vacuum tunnel barrier. Treating the as single-level quantum dot, it is shown that an applied voltage STM gives rise pumping or cooling mechanical subsystem depending on direction electronic flow. It also demonstrated...