Simulation-based analysis of dynamic voltage restorer with sliding mode controller at optimal voltage for power quality enhancement in distribution system

Zahra, Shabeh tu; Khan, R. U.; Ullah, Mian Farhan; Begum, B.; Anwar, Naveed

doi:10.20998/2074-272x.2022.1.09

Cited by 9 publications

(16 citation statements)

References 15 publications

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“…Among nonlinear control methods, the sliding mode controller gave the better and robust performance as compared to the other linear and non -linear controller in the shape of robustness, insensitivity, system parameter, simplicity, mathematical modeling and for system stability [145].…”

Section: Sliding Mode Controlmentioning

confidence: 99%

A review on the state of the art of dynamic voltage restorer: topologies, operational modes, compensation methods, and control algorithms

Shah,

Ullah,

Nouman

et al. 2024

Eng. Res. Express

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The state-of-the-art dynamic voltage restorers (DVRs) have advanced significantly in recent years. Modern DVRs can detect voltage sags or dips on the power line in real-time and are able to rapidly inject a compensating voltage to maintain a constant voltage at the load. This helps to improve the power quality of the electrical distribution system and to protect sensitive electronic equipment from voltage fluctuations. One key development in the field of DVRs has been the use of advanced control algorithms that enable the DVR to track the voltage more accurately on the power line and to inject a compensating voltage more accurately. These algorithms can be implemented using digital signal processors (DSPs) or field-programmable gate arrays (FPGAs), which allow for fast and precise control of the DVR. Another important development has been the use of high-frequency inverters in DVRs. These inverters can operate at much higher frequencies than traditional inverters, which allows them to switch on and off more quickly and to inject a more precise compensating voltage. This can help to further improve the power quality of the electrical distribution system. Overall, the state-of-the-art DVR technology continues to evolve, and new advances are being made all the time to improve the performance and reliability of these devices.

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Section: Sliding Mode Controlmentioning

confidence: 99%

A review on the state of the art of dynamic voltage restorer: topologies, operational modes, compensation methods, and control algorithms

Shah,

Ullah,

Nouman

et al. 2024

Eng. Res. Express

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“…Apply square root on both sides of (12). The solution for the equation leads to SVSI for the transmission line i, j is given in (13):…”

Section: Development Of Proposed Index (Svsi)mentioning

confidence: 99%

“…To observe (13), the index SVSI depends on the transmission resistance of the line. For a practical or standard system, the resistance values are assumed to be negligible or zero.…”

Section: Development Of Proposed Index (Svsi)mentioning

confidence: 99%

Stability analysis of power system under n-1 contingency condition

Baleboina,

Rudramoorthy

2024

Bulletin EEI

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Several voltage stability indices (VSIs) have been developed to assess the potential for voltage collapse. However, certain indexes are computationally costly. Meanwhile, some have been noted to underperform across various conditions. This work proposes a novel line index called the super voltage stability index (SVSI) to calculate the system's voltage stability margin (VSM). The suggested approach is based on the transmission system's two bus systems. The reactive power loss and N-1 contingency conditions to voltage sensitivity is a unique calculation approach used in this study to identify voltage instability. Day to day, the demand for electric power is being increased due to incessant increments in technology and population growth. Therefore, the power system networks are under pressure. The operational conditions of transmission system networks are affected at this point, which may result in voltage collapse. Regular monitoring of power supply is essential to avert voltage collapse. The effectiveness of the suggested index has been assessed using the IEEE 5 and 30-bus systems across diverse operating scenarios, including variations in active and reactive power loading as well as single line losses. The findings indicate that SVSI provides a more reliable indication of the proximity to voltage collapse when compared to conventional line VSIs.

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“…The distribution system experiences challenges due to its susceptibility to failures, varying load conditions, and the presence of interconnected or radial configurations. In comparison to power generation and transmission, the distribution system operates at a considerably lower voltage profile [6], [7].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Voltage Restorer with a Novel Robust control strategy to improve Power Quality issues in Distribution Network

2023

1st International Conference on Modern and Advanced Research Icmar 2023

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The incorporation of renewable energy sources into the electrical system has resulted in power quality (PQ) concerns like voltage sag and voltage swell. These issues affect sensitive loads and pose challenges in power distribution networks. To address these challenges, a recently introduced device called the Dynamic Voltage Restorer (DVR) offers a unique solution. This research focuses on mitigating voltage sag and voltage swell using a DVR and a sliding mode controller based on a rotating sliding surface. The DVR, incorporating energy storage similar to a DC battery, plays a vital role in averting voltage sags and swells by injecting high voltage for a brief period. When the DVR is connected between the voltage source and the load through an injection transformer, it effectively enhances the load voltage within the power distribution system. In contrast to conventional methods that rely on the grid, this suggested approach enables the system to independently address PQ issues like voltage sag and swell. Through simulated investigations using MATLAB/Simulink R2018a, the effectiveness of the proposed technique is demonstrated. The solution exhibits a mitigation time of 2 milliseconds and maintains total harmonic distortion below 5%, meeting IEEE criteria. As a result, the proposed solution is proven to be more efficient, straightforward, dependable, and adaptable.

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Simulation-based analysis of dynamic voltage restorer with sliding mode controller at optimal voltage for power quality enhancement in distribution system

Cited by 9 publications

References 15 publications

A review on the state of the art of dynamic voltage restorer: topologies, operational modes, compensation methods, and control algorithms

A review on the state of the art of dynamic voltage restorer: topologies, operational modes, compensation methods, and control algorithms

Stability analysis of power system under n-1 contingency condition

Dynamic Voltage Restorer with a Novel Robust control strategy to improve Power Quality issues in Distribution Network

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