scholarly journals Problems of the Estimation of the Consumer’s Contribution to the Power Quality Distortion in the Point of Common Coupling

2017 ◽  
pp. 12-19 ◽  
Author(s):  
Dmitrii V. DVORKIN ◽  
◽  
Maxim A. SILAYEV ◽  
Vladimir N. TUL’SKII ◽  
Stefan PALIS ◽  
...  
Keyword(s):  
Power Quality ◽  
Point Of Common Coupling ◽  
Common Coupling

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

Power Quality Assessment and Enhancement in a Grid Connected Renewable Energy System Using Dynamic Voltage Restorer

2014 ◽  
Vol 573 ◽  
pp. 716-721
Author(s):  
S. Rajeshbabu ◽  
B.V. Manikandan
Keyword(s):  
Neural Network ◽  
Renewable Energy ◽  
Power Quality ◽  
Energy System ◽  
Dynamic Voltage Restorer ◽  
Renewable Energy System ◽  
Voltage Restorer ◽  
Point Of Common Coupling ◽  
Dynamic Voltage ◽  
Common Coupling

Renewable energy sources provide the additional/satisfy the power to the consumer through power electronics interfaces and integrated with the grid. In grid integration power quality is one of the important parameter that need to be paying more attention. This proposed work focuses on power quality issues in a grid connected renewable energy system. Power quality issues will arises due to many factors here with the by introducing a fault condition in a grid connected renewable energy system the measurements were made at the point of common coupling and the mitigation is done with the help of a dynamic voltage restorer. The dynamic voltage restorer is a device which offers series compensation activated by neural network based controller. The sag improvement and the total harmonic assessment were made at the point of common coupling. Keywords: Neural network, Point of common coupling, Renewable energy source, Power quality, Dynamic voltage restorer ,electric grid.

Determining Harmonic Contributions Based on Reweighted Complex Least Squares Method

2013 ◽  
Vol 448-453 ◽  
pp. 2660-2666
Author(s):  
Hui Chun Hua ◽  
Xiu Fang Jia ◽  
Hai Qing An ◽  
Shao Guang Zhang
Keyword(s):  
Quality Management ◽  
Least Squares ◽  
Power Quality ◽  
Least Squares Method ◽  
Test System ◽  
Important Task ◽  
Reasonable Result ◽  
Point Of Common Coupling ◽  
Common Coupling

Determining harmonic contribution quantitatively at the point of common coupling is an important task for power quality management. Outliers and influential points could have strong influences on regressors. This paper puts forward a method named reweighted complex least squares to eliminate or reduce the influences to ensure the robustness of the regression. The method can improve precision of the equivalent harmonic impedance and it can get a more reasonable result in harmonic contribution determination than previous methods. A case study based on the IEEE 14-bus test system was conducted, which shows the validity of the proposed method.

A 28-Pulse AC-DC Converter Based SMPS for Telecom Power Supply

2010 ◽  
Vol 11 (4) ◽  
Author(s):  
R. Kalpana ◽  
G. Bhuvaneswari ◽  
Bhim Singh ◽  
Shikha Singh ◽  
Sanjay Gairola
Keyword(s):  
Power Quality ◽  
Power Factor ◽  
Power Supply ◽  
Simulated Performance ◽  
Harmonic Currents ◽  
Point Of Common Coupling ◽  
Common Coupling ◽  
Switched Mode Power Supply ◽  
Laboratory Prototype ◽  
Wide Operating

This paper presents a new 28-pulse ac-dc converter for enhancing the power quality at the point of common coupling, while feeding a medium capacity switched mode power supply (SMPS). It consists of two series connected 14-pulse ac-dc uncontrolled converters fed by seven phase-shifted ac voltages. The proposed converter is found capable of suppressing up to 27 harmonic currents in the ac mains. The power factor is also improved to near unity over a wide operating range of the SMPS. The design and analysis of the proposed ac-dc converter is carried-out in detail. A laboratory prototype of the autoconnected transformer based 28-pulse ac-dc converter is developed, and various tests have been conducted on it to validate the simulated performance of the proposed converter. Several experimental results are also included to show the effectiveness and robustness of the proposed converter.

scholarly journals Experimental data on power quality assessment at point of common coupling of a steel mill to an electric power grid

Data in Brief ◽  
2021 ◽  
Vol 39 ◽  
pp. 107681
Author(s):  
Emenike Ugwuagbo ◽  
Adeola Balogun ◽  
Ayobami Olajube ◽  
Osita Omeje ◽  
Ayokunle Awelewa ◽  
...  
Keyword(s):  
Experimental Data ◽  
Quality Assessment ◽  
Electric Power ◽  
Power Quality ◽  
Power Grid ◽  
Steel Mill ◽  
Electric Power Grid ◽  
Point Of Common Coupling ◽  
Common Coupling

scholarly journals A New Aluminum Pot Line Rectiformer Scheme with Effective Harmonic Suppression Capability

2018 ◽  
Vol 9 (4) ◽  
pp. 1573
Author(s):  
Mahmood Al-Mahari ◽  
S. Ali Al-Mawsawi ◽  
Fadhel Albasri
Keyword(s):  
Power Quality ◽  
Direct Current ◽  
Alternating Current ◽  
Harmonic Suppression ◽  
Matlab Simulink ◽  
Harmonic Elimination ◽  
Point Of Common Coupling ◽  
Common Coupling ◽  
Quality Issues ◽  
Space Requirements

The conversion from alternating current to direct current creates harmonics and causes power quality issues especially when large amount of power being converted. To mitigate these issues, conventional schemes for pot line Rectiformers are integrated with passive harmonic filters (PHF), which are either connected directly to the feeding grid or connected to each tertiary winding of the Rectiformer regulating transformer. This paper presents a new pot line Rectiformer scheme that reduces the distortion at the Rectiformer terminal and has better harmonic attenuation capability at the point of common coupling (PCC) by using parallel delta connected (PDC) tertiary winding between two adjacent Rectiformers. The proposed pot line scheme is modeled and simulated using MATLAB/Simulink. A comparison is made with Aluminum Bahrain (ALBA) new 900MW pot line 6 (PL6) scheme in terms of harmonic elimination, capability, operational constrains and cost/space requirements.

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