Assessment and mathematical modeling of energy quality parameters of grid connected photovoltaic inverters

Rampinelli, Giuliano Arns; Gasparin, Fabiano Perin; Bühler, Alexandre José; Krenzinger, Arno; Romero, Faustino Chenlo

doi:10.1016/j.rser.2015.07.087

Cited by 21 publications

(10 citation statements)

References 18 publications

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“…1100, the power quality is characterised as: "The idea of powering and grounding particular sensitive equipment in a matter that is appropriate for the functioning of that equipment" [41]. PQ issue might cause harm or inappropriate functioning of equipment connected to the grid along with end-user equipment [42]. Power quality turbulences associated to both current and voltage like poor voltage regulation, excessive harmonics current overloading in line, load unbalancing, deteriorated power factor (PF), unnecessary neutral current, sag, swell, voltage flicker short interruption, notch and spike worsen the excellence of power delivered.…”

Section: B Choice Of Pq Phenomena and Indices For Representationmentioning

confidence: 99%

“…Distributed generation has a significant role concerning the quality of power since the operational events of renewable energy affect the PQ of DNs. Specifically, large current fluctuations all through outage and synchronization of RES based DGs may result in substantial voltage transients [42]. The complete PQ performance of the distribution network is further exacerbated with high penetration of renewable energy along with non-linear loads at the same time [43].…”

Section: B Choice Of Pq Phenomena and Indices For Representationmentioning

confidence: 99%

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Power Quality Assessment of Distorted Distribution Networks Incorporating Renewable Distributed Generation Systems Based on the Analytic Hierarchy Process

et al. 2020

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LIST OF SYMBOLS m Number of criteria n Number of alternatives TVHD Total voltage harmonic distortion VSS Voltage sag score Va, Vb, Vc Post sag RMS voltages of phase A, B and C respectively VUF Voltage unbalance factor Vp Positive sequence voltage component Vn Negative sequence voltage component Vab, Vbc, Vca Three-phase imbalanced line voltages Vabe Difference between the line voltage Vab and the average line voltage VPPI Voltage Profile Performance Index A Pairwise comparison matrix ajk General element of pairwise comparison matrix j, k Names of criterion w Vector of criteria weight S Matrix of PQ phenomena scores v Vector of global PQ phenomena scores Fi Vector of individual corresponding indices of PQ phenomena Fthr Vector of threshold values of indices p Number of PQ phenomena considered UPQIi Unified power quality index for the i th bus Wg, Wd, Wl Weights assigned to grid, DG and load bus group respectively Ag, Ad, Al PQ priority scores of grid, DG and load bus group respectively g Total number of utility grid buses d Total number of DG buses l Total number of load buses wi Power quality importance score of the i th bus of the corresponding bus group UPQIg Unified power quality index of grid bus group UPQId Unified power quality index of DG bus group UPQIl Unified power quality index of load bus group UPQIoverall Unified power quality index of the overall system Iph Photocurrent Is Load current Id Diode current Ish Shunt current Fs Solar radiation To Ambient temperature Vs Load voltage P1, P2, P3 Constants Tj Junction temperature e The charge of an electron a The ideality factor of a diode Ns The number of cells connected in series K Boltzmann's constant Rs The value of series resistance Eg Energy bandgap

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Section: B Choice Of Pq Phenomena and Indices For Representationmentioning

confidence: 99%

Section: B Choice Of Pq Phenomena and Indices For Representationmentioning

confidence: 99%

Power Quality Assessment of Distorted Distribution Networks Incorporating Renewable Distributed Generation Systems Based on the Analytic Hierarchy Process

et al. 2020

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“…The power quality analysis of DG output power owning to the applied active IDMs has been carried out in [16]- [25], [28], [29]. Reference [16] has claimed that the ratio of the injected reactive power disturbance (ΔQ) to the active power output (P DG ) in AFD must be kept within the range of [-0.95%, 4.11%] to satisfy the standard requirements for a sample GCPVS.…”

Section: Introductionmentioning

confidence: 99%

“…Otherwise, THD I would be unacceptable in some multiple DGs scenarios. Reference [28] has studied the power quality assessment of ten string inverters, connected to the Brazilian power grid. The power analyzer has been employed to measure THD I and voltage THD (THD V ) as well as power factor with a few loadings.…”

Section: Introductionmentioning

confidence: 99%

“…The analysis of measured data demonstrates the compliance of the output energy with the quality requirements under a wide range of operation conditions, especially in high penetration levels. However, high THD I and THD V as well as low power factor have been observed at low power generations [28]. The effect of IM and AFD tech-niques on the power quality of a single-phase 1.5 kWp PV system has been assessed in [29].…”

Section: Introductionmentioning

confidence: 99%

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Power Quality Assessment of Voltage Positive Feedback Based Islanding Detection Algorithm

Bakhshi‐Jafarabadi

Ghazi

Sadeh

2020

Journal of Modern Power Systems and Clean Energy

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Islanding refers to a condition where distributed generators (DGs) inject power solely to the local load after electrical separation from power grid. Several islanding detection methods (IDMs) categorized into remote, active, and passive groups have been reported to detect this undesirable state. In active techniques, a disturbance is injected into the DG' s controller to drift a local yardstick out of the permissible range. Although this disturbance leads to more effective detections even in well-balanced island, it raises the total harmonic distortion (THD) of the output current under the normal operation conditions. This paper analyzes the power quality aspect of the modified sliding mode controller as a new active IDM for grid-connected photovoltaic system (GCPVS) with a string inverter. Its performance is compared with the voltage positive feedback (VPF) method, a well-known active IDM. This evaluation is carried out for a 1 kWp GCPVS in MATLAB/Simulink platform by measuring the output current harmonics and THD as well as the efficiency under various penetration and disturbance levels. The output results demonstrate that since the proposed disturbance changes the amplitude of the output current, it does not generate harmonics/subharmonics. Thereby, it has a negligible adverse effect on power quality. It is finally concluded that the performance of the sliding mode-based IDM is reliable from the standpoints of islanding detection and power quality. Index Terms-Islanding detection method (IDM), power quality, sliding mode controller, total harmonic distortion (THD), voltage positive feedback (VPF).

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Detailed Economic Analysis of Solar Rooftop Photovoltaic System: Case Study of Institutional Building

Kohli¹,

Rajput²,

Wadhwani³

2022

Sustainable Technology and Advanced Computing in Electrical Engineering

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Assessment and mathematical modeling of energy quality parameters of grid connected photovoltaic inverters

Cited by 21 publications

References 18 publications

Power Quality Assessment of Distorted Distribution Networks Incorporating Renewable Distributed Generation Systems Based on the Analytic Hierarchy Process

Power Quality Assessment of Distorted Distribution Networks Incorporating Renewable Distributed Generation Systems Based on the Analytic Hierarchy Process

Power Quality Assessment of Voltage Positive Feedback Based Islanding Detection Algorithm

Detailed Economic Analysis of Solar Rooftop Photovoltaic System: Case Study of Institutional Building

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