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13 articles for “Voltage sag/swell”
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Voltage Sag and Swell Compensation Using DVR Based on Asymmetrical Cascade Multicell Converter
Abstract: Dynamic voltage restorer (DVR) is a device which is used to compensate the voltage sags and swells for the protection of sensitive loads. The compensation is done by use of a converter, in this paper DVR configuration is based on asymmetrical cascade multicell converter. One of the main advantages of asymmetrical cascade multicell is increase in the number of output voltage levels with reduced number of switches. 15 level asymmetrical …
Published in Journal of Microelectronics and Solid State Devices · Vol. 3, Issue 2, 2016 · pp. 23–26 Read article
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Improvement in Distribution System Performance by D-STATCOM
Abstract: Increasing use of power electronics devices in modern power system has many power quality problems arise in distribution system like voltage sag, voltage swell, harmonics, flickering, etc. This problem largely affects the performance of distribution system. Distribution static synchronous compensator (D-STATCOM) is a device which is used for the solution of power quality problems. In this paper, voltage sag and voltage swell were generated and mitigation of the same is …
Published in Journal of Power Electronics and Power Systems · Vol. 6, Issue 2, 2016 · pp. 25–33 Read article
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Power Quality Improvement in Grid-Connected PV Systems using TCSC
Abstract: Power quality issues such as voltage sags, swells, and harmonic distortions pose significant challenges to the stability and efficiency of grid-connected systems. This study presents a simulation and analysis of a Thyristor-Controlled Series Capacitor (TCSC) for mitigating voltage sags and swells, thereby enhancing overall power quality. A grid-connected photovoltaic (PV) system integrated with a TCSC is modelled and simulated using MATLAB/Simulink to evaluate its performance under diverse operating conditions. The …
Published in Trends in Electrical Engineering · Vol. 14, Issue 3, 2024 Read article
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Voltage and Power Quality Control in Wind Power Application by Dynamic Compensation
Abstract: Power quality problem is a critical problem in a power system. Most of the pollution problems created in power system is due to the nonlinear nature of loads. Due to large amount of non-linear equipment, impact and fluctuating loads (such as locomotive, arc-furnace, welding equipment, etc.); wind power as a rule, does not contribute to voltage regulation in grids. Also wind power very often is a source of voltage sag …
Published in Trends in Electrical Engineering · Vol. 4, Issue 1, 2014 · pp. 1–8 Read article
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Modelling and Control of Grid-Connected PV–Battery Hybrid System Using Dynamic Voltage Restorer for Enhanced Power Quality
Abstract: The integration of large-scale photovoltaic (PV) systems into modern power grids introduces significant challenges in maintaining power quality, including voltage sags, swells, and harmonics. To address these issues, this study presents a comprehensive modelling and control framework for a grid-connected PV–Battery hybrid system equipped with a Dynamic Voltage Restorer (DVR). The PV array is modelled using detailed mathematical equations, while the DC–DC converter incorporates advanced Maximum Power Point Tracking (MPPT) …
Published in International Journal of Electrical Power and Machine Systems · Vol. 3, Issue 2, 2025 · pp. 43–58 Read article
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Voltage Sag Mitigation Using DVR and Ultra Capacitor
Abstract: Due to the rising integration of renewable energy sources into the power system, power quality issues have recently become more significant. Voltage sags and swells are among the biggest issues with a power system, and a lot of research has been done to try to solve these issues. Equipment for power conditioning can enhance the quality of the power. Dynamic voltage restorers (DVR) are used to shield sensitive loads from …
Published in Journal of Semiconductor Devices and Circuits · Vol. 9, Issue 3, 2022 · pp. 21–31 Read article
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HCC Based Hybrid Shunt Active Filter to Reduce the Harmonics Due to Switching Surges
Abstract: This paper deals with the hysteresis current control based hybrid shunt active filter to reduce the harmonics produced by frequent switching of industrial loads in distribution system. The main harmonic sources of distribution lines are the non linear loads and frequent switching of industrial loads. The harmonics due to non linear loads can be controlled by passive filters. The switching surges are dynamic and its magnitude dies out quickly. Hence …
Published in Trends in Electrical Engineering · Vol. 3, Issue 2, 2013 · pp. 15–19 Read article
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Performance Comparison of Control Approaches for Improving Power Quality by DSTATCOM
Abstract: Power quality is very important consideration for electrical supply system. A number of methods like active-passive filters, dynamic voltage restorer, distribution static compensator (DSTATCOM) etc; are used to compensate the power quality problems like harmonics, voltage sag and swell, load balancing and others. This paper presents performance comparison of two control strategies used for DSTATCOM to mitigate the problems of harmonics in distribution network. The DSTATCOM, a shunt connected device …
Published in Journal of Power Electronics and Power Systems · Vol. 6, Issue 1, 2016 · pp. 26–33 Read article
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Analysis of Power Quality Disturbances in Distribution Systems with Renewable Energy Integration
Abstract: The growing integration of renewable energy sources within the electrical distribution systems has greatly altered the working dynamics of the contemporary power grids. The introduction of intermittent and nonlinear sources (solar photovoltaic and wind energy systems) leads to a wide range of power quality disturbances, however. The current paper includes the in-depth examination of the problem of power quality in the distribution systems with the integration of renewable energy. The …
Published in Trends in Electrical Engineering · Vol. 16, Issue 1, 2025 Read article
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Solution of Different Problems Related to Active Power Filter Design Using Python
Abstract: ABSTRACTThere are a variety of problems that lead to problems of rising losses and degradation in power quality in AC due to harmonic distortions, voltage sag, voltage spike, flicker, voltage swell, voltage fluctuations, noise and voltage imbalance. In this paper, different problems are analysed and based on their circuit type, input and output value of voltage and current VSI circuit is designed to increase performance in the system. In AC …
Published in Journal of Microelectronics and Solid State Devices · Vol. 9, Issue 3, 2022 · pp. 1–8 Read article
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Survey on Voltage Stability
Abstract: Power quality has a vital role lately because of the impact on electricity suppliers, equipment manufacturers and customers. Power quality is described as the variation of current, voltage and frequency in a power system. It mentions to an extensive type of electromagnetic (EMI) phenomena, which describes the current and voltage at a given time and at a given locality in the power system. Currently, there are several industries exploiting technology …
Published in Journal of Electronic Design Technology · Vol. 7, Issue 3, 2016 · pp. 35–40 Read article
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Improved Unified Power Quality Conditioner Design and Numerical Simulation For Power Quality Improvement
Abstract: Harmonic currents can distort the waveform voltage, resulting in a weak signal. There is also an increase in the number of loads requiring enough sinus tension to function properly. As electronic devices become more power-sensitive, people are becoming increasingly interested in power conditioning solutions. Therefore, if the amount of electricity being generated falls below a certain threshold, some type of compensation must be provided. Unified Power Quality Controller (UPQC) is …
Published in Journal of Microwave Engineering and Technologies · Vol. 8, Issue 3, 2021 · pp. 52–60 Read article
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Power Quality Issues and Mitigation Strategies: A Review
Abstract: AbstractTo protect the power system recognition and arrangement of voltage (V) and current (I) issues are essential tasks. Most power quality (PQ) disturbances are unstable and ephemeral; the call for recognition and arrangement of voltages and current is proved. There are some intelligent system technologies which have dominance regarding fault analysis by using wavelet transform (WT), expert systems and artificial neural networks. As signals are classified in six classes: five …
Published in Current Trends in Signal Processing · Vol. 9, Issue 3, 2019 · pp. 23–27 Read article