Harmonics assessment and mathematical modeling of power quality parameters for low voltage grid connected photovoltaic systems

Solar Energy ◽  
2019 ◽  
Vol 183 ◽  
pp. 315-326 ◽  
Author(s):  
A. Elkholy
Keyword(s):  
Mathematical Modeling ◽  
Power Quality ◽  
Low Voltage ◽  
Quality Parameters ◽  
Photovoltaic Systems

Assessment of power quality parameters and indicators at the point of common coupling in a low voltage power grid with photovoltaic generation emulated

2022 ◽  
Vol 203 ◽  
pp. 107679
Author(s):  
Oscar Pinzón-Quintero ◽  
Daniel Gaviria-Ospina ◽  
Alejandro Parrado-Duque ◽  
Rusber Rodríguez-Velásquez ◽  
German Osma-Pinto
Keyword(s):  
Power Quality ◽  
Low Voltage ◽  
Power Grid ◽  
Quality Parameters ◽  
Photovoltaic Generation ◽  
Point Of Common Coupling ◽  
Common Coupling

scholarly journals Influence of Measurement Aggregation Algorithms on Power Quality Assessment and Correlation Analysis in Electrical Power Network with PV Power Plant

Energies ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 3547 ◽  
Author(s):  
Jasiński ◽  
Sikorski ◽  
Kostyła ◽  
Kaczorowska ◽  
Leonowicz ◽  
...  
Keyword(s):  
Power Plant ◽  
Correlation Analysis ◽  
Quality Assessment ◽  
Power Quality ◽  
Low Voltage ◽  
Electrical Power ◽  
Weather Conditions ◽  
Comparative Investigation ◽  
Quality Parameters ◽  
Voltage Variation

Recently a number of changes were introduced in amendment to standard EN 50160 related to power quality (PQ) including 1 min aggregation intervals and the obligation to consider 100% of measured data taken for the assessment of voltage variation in a low voltage (LV) supply terminal. Classical power quality assessment can be extended using a correlation analysis so that relations between power quality parameters and external indices such as weather conditions or power demand can be revealed. This paper presents the results of a comparative investigation of the application of 1 and 10 min aggregation times in power quality assessment as well as in the correlation analysis of power quality parameters and weather conditions and the energy production of a 100 kW photovoltaic (PV) power plant connected to a LV network. The influence of the 1 min aggregation time on the result of the PQ assessment as well as the correlation matrix in comparison with the 10 min aggregation algorithm is presented and discussed.

DIDACTIC PROCEDURE AND EQUIPMENT FOR THE STUDY OF LOW VOLTAGE POWER QUALITY PARAMETERS

2019 ◽  
Author(s):  
Calin Mihai Vinga ◽  
Francisc Pfeifer ◽  
Hannelore Elfride Filipescu ◽  
Nicolae Todea ◽  
Flaviu Mihai Frigura-Iliasa ◽  
...  
Keyword(s):  
Power Quality ◽  
Low Voltage ◽  
Quality Parameters

scholarly journals On the Correction of the Power Factor in Modern Low-Voltage Power Electrical Installations

2017 ◽  
Vol 17 (2) ◽  
pp. 10-15 ◽  
Author(s):  
Emil Cazacu ◽  
Marilena Stănculescu ◽  
Horia Andrei
Keyword(s):  
Power Quality ◽  
Power Factor ◽  
Power Flow ◽  
Reactive Power ◽  
Low Voltage ◽  
Harmonic Distortion ◽  
Quality Parameters ◽  
Specific Power ◽  
Industrial Installation ◽  
Reactive Power Flow

AbstractThe paper presents the main electrical loads that require reactive power, evaluating also its value in different operating states of the industrial installation (permanent sinusoidal or distorted). Also, the effects of reactive power flow in the networks are quantitatively estimated and accordingly, a series of specific power quality indicators (e.g. power factor, crest factor, total harmonic distortion) are highlighted. Different types of solutions dedicated to reduce the level of reactive power are also suggested. The proper design of the power factor correction systems is directly correlated with the consumer power quality parameters. A case-study will round up the work, underling the major importance of the reactive power flow in modern electric installations.

Reduction of the Low Voltage Substation Constraints by Inserting Photovoltaic Systems in Underserved Areas

2019 ◽  
Vol 12 (2) ◽  
pp. 105-112
Author(s):  
Benbouza Naima ◽  
Benfarhi Louiza ◽  
Azoui Boubekeur
Keyword(s):  
Low Voltage ◽  
Voltage Drop ◽  
Electrical Energy ◽  
Utilization Rate ◽  
Photovoltaic Systems ◽  
Voltage Distribution ◽  
Medium Voltage ◽  
Pv Systems ◽  
Transformer Substation ◽  
Load Pattern

Background: The improvement of the voltage in power lines and the respect of the low voltage distribution transformer substations constraints (Transformer utilization rate and Voltage drop) are possible by several means: reinforcement of conductor sections, installation of new MV / LV substations (Medium Voltage (MV), Low Voltage (LV)), etc. Methods: Connection of mini-photovoltaic systems (PV) to the network, or to consumers in underserved areas, is a well-adopted solution to solve the problem of voltage drop and lighten the substation transformer, and at the same time provide clean electrical energy. PV systems can therefore contribute to this solution since they produce energy at the deficit site. Results: This paper presents the improvement of transformer substation constraints, supplying an end of low voltage electrical line, by inserting photovoltaic systems at underserved subscribers. Conclusion: This study is applied to a typical load pattern, specified to the consumers region.

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