Power Supply Reliability Enhancement for Low-Voltage Distribution Area With Power Quality Improvement Function

Li, Hongchuan; Li, Bin; Luo, Zhongge; Li, Hang; Zhao, Yu; Wang, Ting; Sun, Youxian

doi:10.1109/access.2022.3229424

Cited by 13 publications

(3 citation statements)

References 24 publications

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“…The operational benefit is the factor that most directly reflects the purpose of constructing a power-grid project to improve the capacity and quality of the power supply. Thus, the benefits of electricity transmission (B11), the power supply reliability (B12), and the load rate (B13) are considered [49][50][51]. Equation ( 1) can be used to determine B12 and B13.…”

Section: Comprehensive Benefit Evaluation Index System For Pgimentioning

confidence: 99%

A Novel Hybrid Power-Grid Investment Optimization Model with Collaborative Consideration of Risk and Benefit

Gao,

Wang,

et al. 2023

Energies

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Power-grid investment (PGI) optimization is crucial for boosting investment performance, lowering investment risks, and assuring the sustainable development of power-grid businesses. However, existing studies, which primarily concentrate on financial aspects, have not adequately considered the risk and benefit factors in the process of PGI. In this context, this research suggests a novel hybrid PGI optimization model that collaboratively accounts for the risks and benefits. In the first step, risk and benefit indicator systems for PGI are built, and a comprehensive evaluation model based on the Bayesian best–worst method and TOPSIS is suggested. In the second stage, a PGI optimization model considering the investment amount, power demand, and low-carbon restrictions is further developed based on the evaluation results. Furthermore, the incomprehensible but intelligible-in-time logic algorithm is adopted to solve the problem. By conducting an empirical analysis of ten projects within a power-grid company, the optimal investment plan and a differentiated investment portfolio strategy are obtained by adjusting the key elements.

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Section: Comprehensive Benefit Evaluation Index System For Pgimentioning

confidence: 99%

A Novel Hybrid Power-Grid Investment Optimization Model with Collaborative Consideration of Risk and Benefit

Gao,

Wang,

et al. 2023

Energies

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“…Distorted power grids can damage the loads connected to them. For example, these distortions can cause malfunctions, reduce service life, decrease performance and even cause plant shutdowns and increase economic losses [1][2][3]. Usually, the equipment in a facility, such as power electronics devices with non-linear characteristics [1,4], distorts the power supply.…”

Section: Introductionmentioning

confidence: 99%

A Novel Three-Dimensional Sigma–Delta Modulation for High-Switching-Frequency Three-Phase Four-Wire Active Power Filters

Lumbreras,

Zaragoza,

Lamich

et al. 2024

Electronics

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This article presents a new modulation technique called three-dimensional sigma–delta (3D-ΣΔ) modulation for high-frequency three-leg four-wire voltage source converters (VSCs) that use wide-bandgap (WBG) semiconductors. These WBG devices allow for the use of high switching frequencies with a greater efficiency than silicon devices. The proposed 3D-ΣΔ technique enables operation at a variable switching frequency, resulting in a significant reduction in switching losses compared to classical pulse-width modulation (PWM) techniques. Moreover, the 3D-ΣΔ technique uses a fast-processing 3D quantiser that simplifies implementation and considerably reduces computational costs. The behaviour of the 3D-ΣΔ modulation is analysed using MATLAB/Simulink and PLECS. The experimental results performed on an active power filter that uses silicon carbide (SiC) MOSFETs demonstrate an improvement in converter efficiency compared to the conventional SPWM technique. Additionally, the experimental results show how 3D-ΣΔ allows for the compensation of harmonics and homopolar currents, thereby balancing the electrical grid currents. The experiments also show that the proposed 3D-ΣΔ modulation outperforms an SPWM technique in terms of power quality, since the former achieves a larger reduction in the harmonic content of the power grid. In conclusion, the proposed modulation technique is an attractive option for improving the performance of four-wire converters in active power filter applications.

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“…Also, poor power quality can have a 1285 (2024) 012009 IOP Publishing doi:10.1088/1755-1315/1285/1/012009 2 significant impact on the cost of the system. It is estimated that the annual cost of implementing power quality compensation can reach up to $182 billion in the US and up to $150 billion in Europe [2]. The goal of the regulation is to ensure that the electrical energy that is used is of the highest quality.…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of Renewable Energy Sources based grid connected system considering Unified Power Flow Controller

Mounika,

sharma,

Balakrishna

2024

IOP Conf. Ser.: Earth Environ. Sci.

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The quality of power is a major concern for the utilities and the power industries. Since the 1980’s, the term power quality has become a very prevalent one. There are various factors that affect the power quality, such as sag, swell, and power factor variation. The main cause of these issues is the use of non-linear loads. In a RES based grid-connected system, harmonics variation is one of the main issues that can affect the quality of power. Hence to address this in this paper Unified Power Flow Controller (UPFC) is proposed for the grid connected system. Many papers were proposed with the various FACTS devices but the performance of the proposed system exhibits a better one. In this paper application of UPFC is implemented in MATLAB/Simulink on test cases of wind-based grid connected system and PV based grid connected system. The performance of the proposed UPFC is compared with conventional Voltage Source Inverter (VSI). In all the cases the proposed UPFC exhibits the improved performance. This ensures the reduction in the harmonics in the power system in future.

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Power Supply Reliability Enhancement for Low-Voltage Distribution Area With Power Quality Improvement Function

Cited by 13 publications

References 24 publications

A Novel Hybrid Power-Grid Investment Optimization Model with Collaborative Consideration of Risk and Benefit

A Novel Hybrid Power-Grid Investment Optimization Model with Collaborative Consideration of Risk and Benefit

A Novel Three-Dimensional Sigma–Delta Modulation for High-Switching-Frequency Three-Phase Four-Wire Active Power Filters

Performance evaluation of Renewable Energy Sources based grid connected system considering Unified Power Flow Controller

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