Load Compensation in a Three-Phase Four Wire Distribution System Considering Unbalance, Neutral Current Elimination and Power Factor Improvement

Ojo, Alaba; Awodele, Kehinde; Sebitosi, A.B.

doi:10.1109/robomech.2019.8704821

Cited by 10 publications

(6 citation statements)

References 9 publications

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“…Accordingly, the proposed method may be used for wide applications in power systems. In [17], a compensator that combines star and delta segments was proposed to eliminate neutral current, balance loads, and improve power factor. Te authors derived a mathematical model based on the load current's phase and sequence components, using symmetrical components theory for load balancing, power factor correction, and neutral current elimination.…”

Section: Literature Reviewmentioning

confidence: 99%

Intelligent Integrated Approach for Voltage Balancing Using Particle Swarm Optimization and Predictive Models

Ghaeb,

Al-Naimi,

Alkayyali

2023

Journal of Electrical and Computer Engineering

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In this paper, an intelligent integrated approach is proposed to control the reactive power and restore the voltage balance in a three-phase power system using particle swarm optimization (PSO), Gaussian process regression (GPR), and support vector machine (SVM). The PSO algorithm is used in offline mode to determine the optimal set of firing angles for the thyristor-controlled-reactor (TCR) compensator according to the smallest fitness value required for voltage balancing. The optimum firing angles are then used to train the GPR and SVM regression models. The GPR and SVM models are finally used as a real-time controller to retrieve the voltage balance in online mode. A simulation model and experimental setup of the electrical power system are built. The modeled system consists of a 500 km long transmission line. The line is divided into three-pi sections to guarantee a real system response. Several simulation and practical case studies have been conducted to test and validate the capability of the proposed integrated approach in solving the voltage unbalance problem. The results have revealed the supreme ability of the proposed integrated approach to restore the voltage balance quickly (within 20 ms) and for a wide range of voltage unbalance factors (VUFs) (3.90–8.42%).

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Section: Literature Reviewmentioning

confidence: 99%

Intelligent Integrated Approach for Voltage Balancing Using Particle Swarm Optimization and Predictive Models

Ghaeb,

Al-Naimi,

Alkayyali

2023

Journal of Electrical and Computer Engineering

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“…An unbalanced condition in an electric power system is often caused by un-transposed lines, unbalanced loads, unbalanced system faults, breaker malfunctions, and open phases [13]. In a three-phase system, voltage unbalance takes place when the magnitudes of phase or line voltages are different and/or the phase angles differ from the balanced conditions.…”

Section: Concept Of Voltage Unbalancementioning

confidence: 99%

Enhanced Model Predictive Control-Based STATCOM Implementation for Mitigation of Unbalance in Line Voltages

2020

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“…Improving electrical energy quality by reducing reactive power was carried out using power factor correction (PFC) [16], [17]. However, the decrease in power quality due to harmonics on the grid could be improved by using a power filter.…”

Section: Introductionmentioning

confidence: 99%

Three-phase four-wire shunt hybrid active power filter model with model predictive control in imbalance distribution networks

Andang

Hartati

Manuaba

et al. 2022

IJECE

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<span lang="EN-US">This paper presents a harmonic reduction and load imbalance model in a three-phase four-wire distribution network. This model uses a hybrid active power filter, a passive inductor and capacitor filter, and an active power filter in the form of a three-phase, four-leg connected grid inverter. The switching of the voltage source converter on this filter uses finite control set model predictive control (FCS-MPC). Control of this hybrid active power filter uses model predictive control (MPC) with a cost function, comparing the reference current and prediction current with mathematical modelling of the circuit. The reference current is taken from the load current by extracting dq, and the predicted current is obtained from the iteration of the voltage source converter (VSC) switching pattern. Each combination is compared with the reference current in the cost function to get the smallest error used as a power switching signal. Modelling was validated by using MATLAB Simulink. The simulation results prove a decrease in harmonics at a balanced load from 22.16% to 4.2% and at an unbalanced load, reducing the average harmonics to 4.74%. The simulation also decreases the load current imbalance in the distribution network. Reducing the current in the neutral wire from 62.01%-0.42% and 11.29-0.3 A.</span>

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Load Compensation in a Three-Phase Four Wire Distribution System Considering Unbalance, Neutral Current Elimination and Power Factor Improvement

Cited by 10 publications

References 9 publications

Intelligent Integrated Approach for Voltage Balancing Using Particle Swarm Optimization and Predictive Models

Intelligent Integrated Approach for Voltage Balancing Using Particle Swarm Optimization and Predictive Models

Enhanced Model Predictive Control-Based STATCOM Implementation for Mitigation of Unbalance in Line Voltages

Three-phase four-wire shunt hybrid active power filter model with model predictive control in imbalance distribution networks

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