Adaptive Ɩ0-LMS based algorithm for solution of power quality problems in PV-STATCOM based system

Gajjar, Nimita A.; Zaveri, Tejas; Zaveri, Naimish

doi:10.11591/eei.v12i2.4174

Cited by 3 publications

(1 citation statement)

References 22 publications

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“…Some examples of active IIS are harmonic injection [14], sandia frequency/voltage shift (SFS, SVS) [15], active power and reactive power variation [16], [17], and impedance measurement [18]. While these methods decrease NDZ, they compromise power quality [19] due to the injected perturbations. Active techniques require more time for islanding detection, to observe the response of injected perturbation.…”

Section: Introductionmentioning

confidence: 99%

A flexible islanding identification technique for PV based grid-tied systems

Sarojam,

Savier

2024

IJPEDS

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The phenomenon of islanding, which occurs in grid integrated distributed generators (DGs), poses significant challenges and potential risks for customers, utility providers, and operational personnel. Detecting islanding quickly and accurately is crucial. The issues related to the conventional islanding methods paved the way in developing a hybrid islanding identification scheme. The developed method achieves accurate results within a reduced time span of 30 ms. The hybrid technique combines the passive method of sliding window based moving average (SWMA) for faster detection and the active method of asymmetrical bilateral reactive power perturbation (ABRPP) for improved precision. The developed hybrid method is simulated and tested using MATLAB/Simulink 2023a. It undergoes testing under various load conditions, including small and large power mismatches between DG generation and local load demand, as well as different load quality factors (QF). Additionally, the hybrid algorithm demonstrates no nuisance tripping when subjected to different load switching conditions such as capacitor switching, motor load switching, and nonlinear load switching. A comparison with existing islanding detection methods confirms the accuracy and speed of the proposed method in identifying islanding conditions.

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Section: Introductionmentioning

confidence: 99%

A flexible islanding identification technique for PV based grid-tied systems

Sarojam,

Savier

2024

IJPEDS

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Three novel machine learning-based adaptive controllers for a photovoltaic shunt active power filter performance enhancement

Azzam Jai,

Ouassaid

2024

Scientific African

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ILA Optimisation Based Control for Enhancing DC Link Voltage with Seamless and Adaptive VSC Control in a PV-BES Based AC Microgrid

Samoon,

Hussain,

Iqbal

2023

Energies

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The paper presents a grid-connected microgrid with a photovoltaic system and a battery as a storage element. The optimal design and control of storage elements and power quality improvement are enhanced using sigmoid-function-based variable step size (SFB-VSS) adaptive LMS control. The DC-link voltage and battery current are enhanced using an ILA-optimization-based PI controller. Comparative analysis shows that an ILA-optimized PI controller improves battery stress and DC-link voltage fluctuations, enhancing overall system stability. The relative percentage error of Vdc is only 0.5714% for ILA-optimized values as compared to GA, PSO, and manually tuned PI gains which are 0.857%, 1.14285%, and 0.86%, respectively. ILA-optimized parameters also enhance battery current, reducing stress on the battery. The system was studied under various dynamic conditions, achieving power balance in all conditions. The system has the capability of seamless transfer of control from GC mode to SA mode when the grid is disconnected. The proposed VSC control shows better performance in steady-state and dynamic conditions, maintaining a THD under 5%, which follows IEEE standard 519, and providing better DC offset rejection, fewer oscillations in the weight component of the load, and better convergence. The proposed control also enhances the frequency of the grid, ensuring a smooth transition between modes. The system is simulated in the MATLAB Simulink environment, and all the optimization techniques were carried out offline.

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Adaptive Ɩ0-LMS based algorithm for solution of power quality problems in PV-STATCOM based system

Cited by 3 publications

References 22 publications

A flexible islanding identification technique for PV based grid-tied systems

A flexible islanding identification technique for PV based grid-tied systems

Three novel machine learning-based adaptive controllers for a photovoltaic shunt active power filter performance enhancement

ILA Optimisation Based Control for Enhancing DC Link Voltage with Seamless and Adaptive VSC Control in a PV-BES Based AC Microgrid

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