Power Quality Considerations for Microgrids Integrating Pairs of Mechanically Coupled Electrical Machines Driven by Power Converters

2012 ◽  
Vol 721 ◽  
pp. 199-204
Author(s):  
Evangelos M. Tsampouris ◽  
Panagiotis E. Kakosimos ◽  
Charalampos K. Patsios ◽  
Antonios Kladas
Keyword(s):  
Power Quality ◽  
Power Flow ◽  
Power Converters ◽  
Industrial Applications ◽  
Electrical Machines ◽  
Operating Parameters ◽  
System Operation ◽  
Quality Measurements

Microgrids integrating distributed motor-generator units are commonplace in locomotive and industrial applications. The behavior of these systems is dependent upon various design-operating parameters. However there is a distinct relation between power quality and power flow within these units. This paper presents an analysis of power quality measurements, depicting this interdependence. Respective results can be taken under consideration during power flow programming, enabling enhanced system operation.

Power quality measurements near DER and disturbing loads

2011 ◽  
pp. 124-129
Author(s):  
M. Van Lumig ◽  
S. Bhattacharyya ◽  
J.F.G. Cobben ◽  
W.L. Kling
Keyword(s):  
Power Quality ◽  
Quality Measurements

scholarly journals Modeling a Distributed Power Flow Controller with a PEM Fuel Cell for Power Quality Improvement

2018 ◽  
Vol 8 (1) ◽  
pp. 2585-2589 ◽  
Author(s):  
J. Chakravorty ◽  
J. Saraswat ◽  
V. Bhatia
Keyword(s):  
Fuel Cell ◽  
Power Quality ◽  
Power Flow ◽  
Electrical Power ◽  
Pem Fuel Cell ◽  
Proton Exchange ◽  
Distributed Power ◽  
Flow Controller ◽  
Distributed Power Flow ◽  
Power Flow Controller

Electrical power demand is increasing at a relatively fast rate over the last years. Because of this increasing demand the power system is becoming very complex. Both electric utilities and end users of electric power are becoming increasingly concerned about power quality. This paper presents a new concept of distributed power flow controller (DPFC), which has been implemented with a proton exchange membrane (PEM) fuel cell. In this paper, a PEM fuel cell has been simulated in Simulink/MATLAB and then has been used in the proposed DPFC model. The new proposed DPFC model has been tested on a IEEE 30 bus system.

scholarly journals A general review of power quality standards and terminologies

2021 ◽  
Vol 23 (12) ◽  
pp. 102-145
Author(s):  
V.A Deshmukh ◽  
◽  
B. Sridhar ◽  
Keyword(s):  
Energy Conservation ◽  
Power Quality ◽  
Power Converters ◽  
Quality Standards ◽  
Financial Loss ◽  
Nonlinear Loads ◽  
Network Interconnection ◽  
General Review ◽  
Ac Power ◽  
Analytical Quantification

In the next few years, more than 80% of AC power is to be processed through power converters owing to their benefits of energy conservation, flexibility, network interconnection, and weight and volume reduction in a number of equipment such as lighting arrestors, HVAC computers, fans, and so on.This paper gives an introduction on power quality (PQ), causes and effects of power quality problems. It also deals with power quality definitions, terminologies, standards, bench-marks, monitoring requirements, financial loss, and analytical quantification. It also discusses various types of nonlinear loads, which cause these power quality problems, they are illustrated, classified, modeled, quantified, and analyzed forassociated power quality issues.

scholarly journals Linear power-flow analysis method for AC-DC electric power networks

2021 ◽  
Author(s):  
Mohammadreza Vatani
Keyword(s):  
Power Systems ◽  
Linear Model ◽  
Power Flow ◽  
Linear Models ◽  
Power Converters ◽  
Power Balance ◽  
Balance Equations ◽  
Dc Power ◽  
Phase Angles ◽  
Dc Power Systems

AC-DC power systems have been operating more than sixty years. Nonlinear bus-wise power balance equations provide accurate model of AC-DC power systems. However, optimization tools for planning and operation require linear version, even if approximate, for creating tractable algorithms, considering modern elements such as DERs (distributed energy resources). Hitherto, linear models of only AC power systems are available, which coincidentally are called DC power flow. To address this drawback, linear bus-wise power balance equations are developed for AC-DC power systems and presented. As a first contribution, while AC and DC lines are represented by susceptance and conductance elements, AC-DC power converters are represented by a proposed linear relationship. As a second contribution, a three-step linear AC-DC power flow method is proposed. The first step solves the whole network considering it as a linear AC network, yielding bus phase angles at all busses. The second step computes attributes of the proposed linear model of all AC-DC power converters. The third step solves the linear model of the AC-DC system including converters, yielding bus phase angles at AC busses and voltage magnitudes at DC busses. The benefit of the proposed linear power flow model of AC-DC power system, while an approximation of the nonlinear model, enables representation of bus-wise power balance of AC-DC systems in complex planning and operational optimization formulations and hence holds the promise of phenomenal progress. The proposed linear AC-DC power systems is tested on numerous IEEE test systems and demonstrated to be fast, reliable, and consistent.

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