Improved Power Quality in a Solar PV Plant Integrated Utility Grid by Employing a Novel Adaptive Current Regulator

Kumar, Vulisi Narendra; P, Narendra Babu; Kiranmayi, R.; Siano, Pierluigi; Panda, Gayadhar

doi:10.1109/jsyst.2019.2958819

Cited by 40 publications

(20 citation statements)

References 33 publications

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“…The system is considered nonlinear behavior due to parameter changes, power electronic devices, variations in temperature in passive components, aging effects, etc. The Lyapunov stability theorem is considered to find out the dynamics of the proposed system 9 for analyzing stability, asymptotic, and exponential stability. Figure 4 shows the bode plot of the proposed control scheme with conventional FONF, which shows the effectiveness of the proposed control F I G U R E 5 (A) Conventional fractional order notch filter (FONF) and (B) equivalent block diagram of improved fractional order notch filter (IFONF) scheme in terms of dc-offset.…”

Section: Proposed Control Schemementioning

confidence: 99%

Improved power quality with an adaptive grid‐forming inverter control scheme in solar PV system

Dadinaboina

Pedakota²,

Chinnathambi

et al. 2021

Int Trans Electr Energ Syst

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In this paper, an improved fractional order notch filter (IFONF)-based gridforming inverter control scheme is employed to mitigate the harmonics in photovoltaic system applications. Moreover, a fuzzy gain tuning proportionalintegral-derivative (FTPID) controller is developed for the dc-link voltage to maintain its reference value. The proposed FTPID-IFONF control scheme is executed to evaluate the active fundamental weight components (FWC) of the load currents and distorted grid voltages consequently generates the PWM pulses to the grid-forming inverter for power quality enrichment in a grid integration with photovoltaic applications. The integer order based filters have some constraints due to differentiator term and fixed integrator. For this reason, an improved design of an integer order notch filter is suggested in the proposed FTPID-IFONF controller scheme. The behavior of the proposed FTPID-IFONF control scheme is found good in-terms of elimination of dc offset, grid-synchronization, separation of fundamental components, adaptive behavior and harmonic elimination at the consumer terminals. The proposed controller is validated under several load and grid dynamic conditions such as steady-state, grid voltage sag-swell, distorted, load dynamic and removed conditions on MATLAB/Simulink platform. A prototype PV integrated with grid setup is constructed to validate the proposed system in the real-time. The FTPID-IFONF control scheme is well justified under several grid and load dynamic conditions and the harmonic distortions of the grid characteristics are found well based on the limits of IEEE-519 standards. A comparative study is also analyzed to show the effectiveness of the controller with recently published works.

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Section: Proposed Control Schemementioning

confidence: 99%

Improved power quality with an adaptive grid‐forming inverter control scheme in solar PV system

Dadinaboina

Pedakota²,

Chinnathambi

et al. 2021

Int Trans Electr Energ Syst

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show abstract

“…To conclude, based on the existing scientific literature, it is presumed that the emerging topic of multiple PV inverters (employing various anti-islanding protection algorithms) at the same PCC has not been sufficiently investigated yet [23,24]. At this point, it is imperative to highlight that some sophisticated anti-islanding schemes that use advanced techniques for the mitigation of current harmonics components, such as [25][26][27][28], are excluded from this study, due to the fact that they have not been widely employed by commercial PV inverters yet. It is recalled that this study focuses on the cooperative response of the commercial PV inverters, which are widely used and established in markets.…”

Section: Introductionmentioning

confidence: 99%

Study on the effectiveness of commercial anti‐islanding algorithms in the prospect of mass penetration of PVs in low‐voltage distribution networks

Boubaris

Kyritsis

Babouras

et al. 2021

IET Energy Syst Integration

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In the coming years, distribution grids will be progressively flooded by renewable energy sources (RES) that will be interconnected with the main grid through power electronic converters. Photovoltaics (PVs) are one of the most promising renewable technologies even for densely built‐up areas where space problems are inevitable. The high penetration prospect of PV facilities on low‐voltage distribution networks raises questions regarding the necessity of advanced functions that will enable electronically coupled RES to support the operation of distribution grids and to enhance their reliability. In this context, the objective of this study is to investigate the effectiveness of various islanding prevention measures installed in commercial PV inverters, when multiple inverters are operating in parallel with a low‐voltage distribution network (LVDN). Extensive experiments were performed under various PV penetration levels, linear/non‐linear load and over/under voltage and over/under frequency conditions, as well as for various values of total harmonic distortion of the mains voltage. Further to the primary statistical analysis, the results were analysed in depth by advanced mathematical methods such as box plot and cluster analysis. The findings of this study indicate that commercial anti‐islanding techniques present a high probability of failure in the case of multiple PV units at the same point of common coupling, calling for new and more advanced algorithms.

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“…Harmonic sources are not only energy consumers but also power electronics-based generators can be important sources of harmonic generation in the network. These harmonic sources can reduce the harmonic output and improve power quality indices by installing proper filters or optimising system control [2,3].…”

Section: Introductionmentioning

confidence: 99%

Harmonic indices for continuous evaluation of consumer's harmonic contribution

Tadayon

Hooshmand

Kiyoumarsi

et al. 2020

IET Generation, Transmission & Distribution

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Improved Power Quality in a Solar PV Plant Integrated Utility Grid by Employing a Novel Adaptive Current Regulator

Cited by 40 publications

References 33 publications

Improved power quality with an adaptive grid‐forming inverter control scheme in solar PV system

Improved power quality with an adaptive grid‐forming inverter control scheme in solar PV system

Study on the effectiveness of commercial anti‐islanding algorithms in the prospect of mass penetration of PVs in low‐voltage distribution networks

Harmonic indices for continuous evaluation of consumer's harmonic contribution

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