For three phase LCL -filtered gird converters, this paper designs a robust control strategy to reduce high frequency and subsynchronous or supersynchronous oscillations. Two components, namely the grid side inductor component xmlns:xlink="http://www.w3.org/1999/xlink">LC filter component, c...

Two filtering algorithms for removal of DC offset and subsynchronous resonance terms in the current/voltage signals in a transmission line under fault condition are presented. One of the algorithms utilizes the samples of the signal over a time interval slightly greater than one cycle time of the fundamental component and is computationally less demanding than the existing Fourier filters. The ...

The microgrid (MG) system is a controlled and supervised power consisting of renewable energy (RE)-based distributed generation (DG) units, loads, storage. MG can be operated autonomously or while connected to the grid. Higher intermittencies uncertainties observed in MGs compared conventional system, which possible source small-signal stability systems. It seen as disturbances around stable op...

This study presents the auxiliary damping control with the reactive power loop on the rotor-side converter of doubly-fed induction generator (DFIG)-based wind farms to depress the sub-synchronous resonance oscillations in nearby turbogenerators. These generators are connected to a series capacitive compensation transmission system. First, the damping effect of the reactive power control of the ...

This paper presents the development of a new time domain simulation program for the computation of machine and network transients over a wide frequency spectrum. The program uses the extensive capability for the detailed representation of, and the computation of electromagnetic transients on, the power system network available in the BPA Electromagnetic Transients Program (EMTP). The model of t...

Subsynchronous oscillation, caused by the interaction between rotor side converter (RSC) control of doubly fed induction generator (DFIG) and series-compensated transmission line, is an alleged subsynchronous (SSCI). SSCI can cause DFIGs to go offline crowbar circuit breakdown, then deteriorate power system stability. This paper proposes a novel adaptive super-twisting sliding mode mitigation m...

In recent years, sub-synchronous oscillation incidents have been reported to happen globally, which seriously threatens the safe and stable operation of power system. It is difficult locate source in practice using parameterized model open-loop modal resonance. Therefore, this paper aims at problem instability caused by interaction between multiple voltage converters wind farm grid-connected sy...

Dynamically switched resistor banks connected to the generator transformer bus are known to improve transient stability of the power system. In this article, a braking resistor control strategy designed through fuzzy logic control theory has been proposed to damp the slowly growing subsynchronous resonant (SSR) frequency oscillations of a power system. The proposed control has been tested on th...