A Power-Quality Management Algorithm for Low-Voltage Grids With Distributed Resources

2008 ◽  
Vol 23 (2) ◽  
pp. 1055-1062 ◽  
Author(s):  
C.E.T. Foote ◽  
G.M. Burt ◽  
I. Wasiak ◽  
R. Mienski ◽  
R. Pawelek ◽  
...  
Keyword(s):  
Quality Management ◽  
Power Quality ◽  
Low Voltage ◽  
Distributed Resources ◽  
Management Algorithm

scholarly journals Combined Correlation and Cluster Analysis for Long-Term Power Quality Data from Virtual Power Plant

Electronics ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 641
Author(s):  
Michał Jasiński
Keyword(s):  
Cluster Analysis ◽  
Power Plant ◽  
Power Quality ◽  
Quality Data ◽  
Virtual Power ◽  
Distributed Resources ◽  
Virtual Power Plant ◽  
And Cluster Analysis ◽  
Global Indicators

Analysis of the connection between different units that operate in the same area assures always interesting results. During this investigation, the concerned area was a virtual power plant (VPP) that operates in Poland. The main distributed resources included in the VPP are a 1.25 MW hydropower plant and an associated 0.5 MW energy storage system. The mentioned VPP was a source of synchronic, long-term, multipoint power quality (PQ) data. Then, for five related measurement points, the conclusion about the relation in point of PQ was performed using correlation analysis, the global index approach, and cluster analysis. Global indicators were applied in place of PQ parameters to reduce the amount of analyzed data and to check the correlation between phase values. For such a big dataset, the occurrence of outliers is certain, and outliers may affect the correlation results. Thus, to find and exclude them, cluster analysis (k-means algorithm, Chebyshev distance) was applied. Finally, the correlation between PQ global indicators of different measurement points was performed. It assured general information about VPP units’ relation in point of PQ. Under the investigation, both Pearson’s and Spearman’s rank correlation coefficients were considered.

scholarly journals Power Quality Management of Interconnected Microgrids using Model Predictive Control

2020 ◽  
Vol 53 (2) ◽  
pp. 12918-12923
Author(s):  
F. Garcia-Torres ◽  
S. Vazquez ◽  
C. Bordons ◽  
I. Moreno-Garcia ◽  
A. Gil ◽  
...  
Keyword(s):  
Quality Management ◽  
Model Predictive Control ◽  
Power Quality ◽  
Predictive Control

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 Enhancing the LVRT Capability and Mitigation of Power Quality Issues Using UPQC of a Grid Connected Wind Conversion System

2017 ◽  
Vol 7 (3) ◽  
pp. 643
Author(s):  
C.S Boopathi ◽  
Kuppusamy Selvakumar ◽  
Avisek Dutta
Keyword(s):  
Power Quality ◽  
Reactive Power ◽  
Low Voltage ◽  
Active Filter ◽  
Shunt Active Filter ◽  
Unified Power Quality Conditioner ◽  
Conversion System ◽  
Quality Issues ◽  
Power Quality Conditioner ◽  
Doubly Fed

In this paper unified power quality conditioner has been used to enhance low voltage ride through capability of grid connected wind conversion system taking Doubly fed induction generator (DFIG). Unified Power quality conditioner (UPQC) device is a combination of series active filter and shunt active filter. This custom power device is mainly used to mitigate power quality issues which is an essential factor today because of wide application of power electronics devices. UPQC is capable to deal with voltage and current imperfection simultaneously. It is installed in the system mainly to improve the power quality i.e. Voltage sag/swell, Harmonics, reactive power compensation etc. at point of common coupling. System is modeled in MATLAB/SIMULINK and results shows utilization of UPQC for the enhancement of LVRT of a DFIG wind system according to Grid code. when fault occurs in the system, it will create voltage dip and series compensator of UPQC injects during this time to prevent disconnection from grid and stay connected to contribute during fault. UPQC is also used for fast restoration of system steady state, power factor improvement, prevent rotor over current.

scholarly journals INVESTIGATION AND ANALYSIS OF POWER QUALITY OF SINGLE PHASE, LOW VOLTAGE CONSUMERS IN ADO –EKITI METROPOLIS

2018 ◽  
Vol 6 (5) ◽  
pp. 177-189
Author(s):  
P.K. Olulope
Keyword(s):  
Power Quality ◽  
Low Voltage ◽  
Microsoft Excel ◽  
The Hours ◽  
Nominal Voltage ◽  
Distribution Company ◽  
Voltage Deviation ◽  
Electric Equipment ◽  
Power Harmonics

This paper examines the power quality of Ado-Ekiti metropolis in Ekiti State, Nigeria. The metrics of power quality includes: disturbances such as interruptions, voltage sags, spikes and momentary losses, power harmonics, and voltage unbalances with intrinsic effects on the efficiency and performances on the electric equipment. The necessity for this paper is the fluctuations of voltage supplied to the consumers by the distribution company in Ekiti State. These have significant effects on the power delivered to consumers ‘appliances, quality of their lives and the development of the society at large. The quality of voltage of each consumer in the selected areas were measured with the aid of digital multimeter which was compared with the standard nominal voltage of 240V, voltage deviations were evaluated through the use of standard mathematical equation and linear regression model was employed on the calculated voltage deviation with day and time used as inputs and the voltage deviation as the output. The implementation of the modelling was achieved through the use of Microsoft Excel data tool. The power quality for areas1, 2, 3 for the hours under consideration were poor with respect to R2 range of above 0.5 but better than that area 4 with R2 value of less than 0.5.The results were compared and recommendations were made with the view of improving the power quality in the metropolis.

scholarly journals TO SURVEY POWER QUALITY OF HIGH VOLTAGE KEY-CUSTOMER BY USING VOLTAGE EVENT RECORD

2020 ◽  
Vol 5 (9) ◽  
pp. 30-43
Author(s):  
Yen-Ming Tseng ◽  
Hsi-Shan Huang ◽  
Chen JiQuan ◽  
Wang Xuefei ◽  
Chen Han ◽  
...  
Keyword(s):  
Power Quality ◽  
High Voltage ◽  
Low Voltage ◽  
Economic Losses ◽  
Data Sets ◽  
Event Data ◽  
Voltage Swell ◽  
Event Record ◽  
Key Customer

According to IEEE-1159 definition and classification of power quality of applying at supplyside and demand-side of power system to evaluate the power quality of high voltage keycustomer and using the voltage events record (VER) in low voltage level supply. Which voltage parameter set of VER with specific software Event View software by Fluke and can collect event data, plot graphic of event data sets that can using the data mining skill to analysis the voltage swell, voltage sag, power outage, frequency events and three phase load unbalance of high voltage key-customer. By abnormal voltage event statistics with discriminated by quantization of high voltage key-customer which can evaluate the own power quality and an also provide reference for quality requirements for related semiconductor factories with higher demand that can avoid the significant effect the economic losses.

scholarly journals APPLICATION OF ACTIVE-ADAPTIVE NETWORK TECHNOLOGIES FOR POWER QUALITY MANAGEMENT IN ELECTRIC NETWORKS WITH TRACTION LOAD

2021 ◽  
pp. 56-61
Author(s):  
NATALIA VIKTOROVNA SAVINA ◽  
◽  
IVAN ALEXANDROVICH LISOGURSKY ◽  
LYDIA NIKOLAEVNA LISOGURSKY ◽  
◽  
...  
Keyword(s):  
Quality Management ◽  
Power Quality ◽  
System Approach ◽  
Electric Power System ◽  
Optimal Parameters ◽  
Electric Networks ◽  
Adaptive Power ◽  
Network Technologies ◽  
Traction Load

On the basis of the system approach, the analysis of the basic technologies of the intelligent electric power system that provide adaptive management of the electric network is carried out. The expediency of their application for adaptive power quality management in electric networks with traction load by expanding the functions is shown. The variants of their configuration are proposed to improve the quality of electricity and ensure optimal parameters of electricity quality indicators.

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