scholarly journals Cálculo de parámetros eléctricos en líneas de transmisión de alta tensión

2020 ◽  
pp. 1-7
Author(s):  
Ismael ALBINO-PADILLA ◽  
Juan Carlos ESCAMILLA-SANCHEZ ◽  
Eric MORALES-AGUILAR ◽  
Daniel F. MARTINEZ
Keyword(s):  
Transmission Lines ◽  
Single Phase ◽  
Comsol Multiphysics ◽  
Electrical Parameters ◽  
Three Phase ◽  
Simulation Results ◽  
Basic Equations

This article aims to determine the electrical parameters of the transmission lines, it will focus on the calculation of geometric inductance and capacitance. For this, the cases of the single-phase and three-phase lines with equilateral spacing are studied. The COMSOL Multiphysics program is used to obtain the parameters of the lines. The simulation results are compared with the classic basic equations.

Study on the Characteristic of Sensitive Load under Voltage Sags

2013 ◽  
Vol 418 ◽  
pp. 269-272
Author(s):  
Rong Hui Liu ◽  
Ai Qang Pan ◽  
Hai Bo Wang ◽  
Xiu Yang
Keyword(s):  
Power Supply ◽  
Single Phase ◽  
Voltage Sensitivity ◽  
Voltage Sags ◽  
Phase Voltage ◽  
Three Phase ◽  
Simulation Results

In this paper, the characteristics of AC/DC converter under single-phase voltage sags and three-phase voltage sags are simulated with Matlab emulator. The simulation results show that effects on rectifier equipment under three-phase voltage sags are more serious than those under single-phase voltage sags. The flat wave capacitance plays an important role in voltage sensitivity of sensitive loads. In practice, the capacitance of flat wave capacitor is chosen according to the power supply and load requirements so as to realize the best balance of performance and price.

scholarly journals Mathematical Modeling and Fault Tolerance Control for a Three-Phase Soft-Switching Mode Rectifier

2013 ◽  
Vol 2013 ◽  
pp. 1-13 ◽  
Author(s):  
Kuei-Hsiang Chao ◽  
Chin-Tsang Hsieh
Keyword(s):  
Single Phase ◽  
Load Capacity ◽  
Quality Characteristics ◽  
Soft Switching ◽  
Small Signal ◽  
Three Phase ◽  
Simulation Results ◽  
Switching Mode ◽  
Tolerance Control ◽  
Signal Dynamic

This study primarily focuses on the design of an intelligent three-phase soft-switching mode rectifier (SSMR). Firstly, the small-signal dynamic model of a single-phase SSMR is derived together with the design of its controller. Then, the developed single-phase SSMR is connected to form an intelligent three-phase SSMR. When any of the phase modules in the proposed intelligent three-phase SSMR experiences a fault, it can continue to supply power automatically under reduced load capacity while still maintaining good power quality characteristics. Finally, some simulation results were used to demonstrate the effectiveness of the proposed intelligent three-phase SSMR design.

An Improved ip-iq Harmonic Detection Algorithm

2012 ◽  
Vol 588-589 ◽  
pp. 864-867
Author(s):  
Xue Hai Cui
Keyword(s):  
Real Time ◽  
Single Phase ◽  
Harmonic Component ◽  
Detection Algorithm ◽  
Matlab Simulation ◽  
Harmonic Detection ◽  
Two Phase ◽  
Time Performance ◽  
Three Phase ◽  
Simulation Results

This paper introduces the the basic principle of ip-iq harmonic detection algorithm and puts forward a method of harmonic detection for the single-phase circuit. This method eliminates the three-phase to two-phase and two-phase to the three-phase coordinate transformation, thus effectively reduces the computation ; moreover it has the advantages of good real-time performance and makes the digital control easy. Matlab simulation results show that this method can detect the harmonic component of single-phase and three-phase current accurately and in real-time.

Novel Method of FOC to Speed Control in Three-Phase IM under Normal and Faulty Conditions

2015 ◽  
Vol 6 (4) ◽  
pp. 831
Author(s):  
Mohammad Jannati ◽  
Tole Sutikno ◽  
Nik Rumzi Nik Idris ◽  
Mohd Junaidi Abdul Aziz
Keyword(s):  
Control System ◽  
Single Phase ◽  
Fault Tolerant ◽  
Speed Control ◽  
Field Oriented Control ◽  
Stator Current ◽  
Three Phase ◽  
Novel Method ◽  
Simulation Results ◽  
Conventional Field

<p>This paper proposes a novel method for speed control of three-phase Induction Motor (IM) which can be used for both healthy three-phase IM and three-phase IM under open-phase fault. The proposed fault-tolerant control system is derived from conventional Field-Oriented Control (FOC) algorithm with minor changes on it. The presented drive system is based on using an appropriate transformation matrix for the stator current variables. The presented method in this paper can be also used for speed control of single-phase IMs with two windings. The feasibility of the proposed strategy is verified by simulation results.</p>

Three Phase Power Flow Incorporating Static Var Compensator

2014 ◽  
Vol 573 ◽  
pp. 747-756 ◽  
Author(s):  
B. Karthik ◽  
Jerald Praveen Arokkia ◽  
S. Sreejith ◽  
S. Rangarajan Shriram
Keyword(s):  
Power Systems ◽  
Transmission Lines ◽  
Power Flow ◽  
Single Phase ◽  
Load Condition ◽  
Test System ◽  
Load Flow ◽  
Static Var Compensator ◽  
Three Phase ◽  
Sequence Components

Application of Flexible AC Transmission Systems (FACTS) devices in a power system is a promising and more efficient way for the transfer and control of bulk amount of power. One of the problems encountered in power-systems operation is the generation of unbalanced voltages and currents in the presence of long transmission lines with few or no transpositions. This includes possible unbalances arising in source and load conditions, or indeed any items of plant such as shunt and series reactors. To improve or investigate these unbalance effects in any detail, a 3-phase load-flow solution that allows representation of all possible unbalances as they exist in the power-systems network without making any assumptions is essential. This paper deals with the three phase power flow incorporating Static Var Compensator (SVC). Here SVC is modeled using variable reactance modeling technique and incorporated into the single phase and three phase load flow. Newton Raphson power flow algorithm is adopted here. The performance of SVC to control the power flow and regulating voltage in the network is discussed. The performance analysis is carried out for 4 case studies namely single phase power flow, single phase power flow with SVC, three phase power flow and three phase power flow with SVC. The change in power flow and losses due to the unbalanced load condition in the three phases in illustrated. The studies are carried out in a standard 5 bus test system. Keywords: Three Phase Power flow, Static Var Compensator, Unbalanced system, Negative sequence components, Zero sequence components.

scholarly journals A New MATLAB GUI Tool for Instructing Operation of Power Electronic Rectifiers

2019 ◽  
Vol 7 (2) ◽  
Author(s):  
Mohammad Reza Modabbernia ◽  
Seyed Yaser Fakhrmoosavi ◽  
Alireza Akoushideh ◽  
Alireza Ahadpour Shal
Keyword(s):  
Steady State ◽  
Single Phase ◽  
Power Electronic ◽  
Running Time ◽  
Interactive Tool ◽  
Three Phase ◽  
Different Types ◽  
Basic Equations ◽  
Steady State Simulation

This study seeks to present an interactive tool, which exploits the GUI related abilities in MATLAB, to investigate power electronic rectifiers operation. The present paper aims to show a flexible and extendable environment for steady state simulation of ideal controlled, uncontrolled, single-phase and three-phase power electronic rectifiers. This is accomplished at the presence of R, L and E loads with or without a flywheel diode. The easy application of our tool makes it feasible to be used by the teacher in the classroom. Also its short running time and the PSpice output netlist make it a remarkable alternative to the MATLAB PowerSim toolbox and PSIM software for studying ac-dc converters. Furthermore, in this paper some basic equations were introduced to analyze single and three-phase rectifiers. Because these equations are common between ac-dc converters, analyzing the different types of rectifiers will be easy for the students. The penultimate issue refers that, the proposed program can cause a variety of single and three phase controlled rectifiers accompanied by various combinations of R, L and E loads to be simulated. Ultimately, obtained results are compared to another well-known simulator’s such as PSpice to verify their accuracy.

scholarly journals A Novel Power Factor Corrected Converter For Solar Pv Emulator

2019 ◽  
Vol 8 (6) ◽  
pp. 370-374
Keyword(s):  
Single Phase ◽  
Power Source ◽  
Boost Converter ◽  
Solar Pv ◽  
Photovoltaic Modules ◽  
Pv Panel ◽  
Three Phase ◽  
In Series ◽  
Converter Design ◽  
Simulation Results

This Paper Presents A Pfc Converter Design For A Solar Pv Emulator. A Boost Converter Is Proposed As A Pfc Converter. The Photovoltaic Modules Are Connected In Series As An Array. The Pfc Buck-Boost Converter Circuit Provides The Compensated Voltage To The Pv Panel. The Pfc Converter Circuit Has Been Simulated In Simulink/Matlab. The Simulation Results Shows The Single Phase And Three Phase Output Voltages Along With The Pfc Correction.. The Pv Panel Compensates The Voltage Provided By The Power Source After Conversion From Ac To Dc.

scholarly journals Three-Phase and Single-Phase Measurement of Overhead Power Line Impedance Evaluation

Energies ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 6314
Author(s):  
Boris Cintula ◽  
Žaneta Eleschová ◽  
Matej Cenký ◽  
Peter Janiga ◽  
Jozef Bendík ◽  
...  
Keyword(s):  
Experimental Measurement ◽  
Single Phase ◽  
Measurement Techniques ◽  
Power Line ◽  
Measured Data ◽  
Engineering Industry ◽  
Electrical Parameters ◽  
Detailed Model ◽  
Three Phase ◽  
Overhead Power Line

Calculation and measurement of the overhead power lines electrical parameters is common practice in today’s electrical engineering industry; however, there is very little data to actually compare these two approaches because measured data in such detail are mostly unavailable for academic purposes. Based on the very detailed model of an overhead power line in MATLAB Simulink environment and conducted experimental measurement, this article specifically covers the exact evaluation of the impedance of the investigated overhead power line. Differences between calculation and experimental measurement are shown and discussed accordingly, where, surprisingly, the biggest deviation was observed in the positive resistance parameter. The connection between different measurement techniques (multiple single-phase and three-phase methods), as well as the power line asymmetry reflection in the impedance matrix is explained as well as compared to expected values from the computations. The complete mathematical approach for electrical parameters evaluation from different measurement methods is explained step-by-step, and the final equations are introduced for each method. Proposed methods of obtaining the electrical parameters of the power line are then concluded as the ones with great accuracy and wide usage in practical applications. It shows the great importance of correct input data for the electrical parameters’ theoretical computations and the need to know the measurement methodology and apparatus perfectly to process the measured data and interpret them correctly.

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