Abstract This paper investigates the dynamic interactions between large‐scale PV plants and nearby synchronous generators. To this end, a comprehensive model of plant, including arrays characteristic their voltage controller, DC/DC converter, DC‐link dynamic, DC/AC inverter controllers, output filter, is obtained. Then, eigenvalues plant are calculated, it revealed that has mode in sub‐synchron...

In recent years, the wind energy conversion system faces significant challenges for stable and secure operations, especially in weak grid due to high penetration of into grid. Doubly fed induction generator (DFIG) is one most popular turbine generators its cost-effective variable speed low-cost partial size power converter. Impedance interaction between series or parallel compensated DFIG cause...

Replacing conventional generation by power electronics based changes the dynamic characteristics of system. This results among others in increased susceptibility to sub synchronous oscillations (SSO). paper proposes a systematic procedure for mitigating interactions between DFIG and series compensated transmission line using phase imbalance compensation (PIC) concept. The impact parallel PIC on...

The paper presents a new effective method to damp subsynchronous resonance (SSR) – shaft torsional oscillations for large synchronous generators. This is achieved by using a dynamic power filter and static compensator (DFC) scheme. The proposed scheme with a switched series capacitor compensation and a modulated Tuned-Arm-Filter can be used to damp SSR oscillation modes using a novel Tri-loop E...

This paper provides an H∞ robust control strategy for a permanent magnet synchronous generator (PMSG)-based wind farm to realize subsynchronous resonance suppression (SSR) subject uncertain system distortions and parameter perturbation. Firstly, eighth-order state space mathematical model of PMSG-based is established, including the grid-side converter (GSC), GSC controller, phase-locked loop (P...

An SSR problem has been noticed and caused repeated triggering of the protection. A study indicated that SSR conditions might appear for some network configurations. Thyristor Controlled Series Capacitor (TCSC) was found to eliminate the problem. The paper discusses the problem and introduce different types of protective relays for mitigation of SSR.

This paper describes a set of results of detecting nonlinear phenomena appearing in a turbine generator power system with series-capacitor compensation. The analysis was based on the Floquet theory as well as t h e Hopf Bifurcation theorem. After t he first Hopf bifurcation, t he stable limit cycle bifurcates t o a stable torus and a n unstable limit cycle which connects to a stable limit cycle...