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Journal articles on the topic 'Grid Disturbances'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Khan, Bilal, Zahid Ullah, and Giambattista Gruosso. "Enhancing Grid Stability Through Physics-Informed Machine Learning Integrated-Model Predictive Control for Electric Vehicle Disturbance Management." World Electric Vehicle Journal 16, no. 6 (2025): 292. https://doi.org/10.3390/wevj16060292.

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Integrating electric vehicles (EVs) has become integral to modern power grids to enhance grid stability and support green energy transportation solutions. EVs emerged as a promising energy solution that introduces a significant challenge to the unpredictable and dynamic nature of EV charging and discharging behaviors. These EV behaviors are performed by grid-to-vehicle (G2V) and vehicle-to-grid (V2G) operations that create unpredictable disturbances in the power grid. These disturbances introduced a nonlinear dynamic that compromises grid stability and power quality. Due to the unpredictable n

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2

Shrikant Shantaram Mopari. "Smart Detection and Mitigation of Power Quality Issues in Smart Grids Using MATLAB-Based Simulation and Optimization." Journal of Information Systems Engineering and Management 10, no. 26s (2025): 1003–22. https://doi.org/10.52783/jisem.v10i26s.4328.

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Power quality issues are becoming more prevalent in investigation of smart grids due to the integration of various distributed energy resources (DER), therefore this comprehensive study provides a smart detection and mitigation approach based on MATLAB-based smart grid simulation and optimization approaches. Power quality disturbance including voltage sags, harmonics, and transients is one of the considerable problems for the reliable operation of the grid, and its appropriate management is significant to keep the system stable and efficient. Methodology combines real-time monitoring systems t

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3

Yang, Minghui, Chunsheng Wang, Yukun Hu, Zijian Liu, Caixin Yan, and Shuhang He. "Load Frequency Control of Photovoltaic Generation-Integrated Multi-Area Interconnected Power Systems Based on Double Equivalent-Input-Disturbance Controllers." Energies 13, no. 22 (2020): 6103. http://dx.doi.org/10.3390/en13226103.

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With the rapid increase of photovoltaic (PV) penetration and distributed grid access, photovoltaic generation (PVG)-integrated multi-area power systems may be disturbed by more uncertain factors, such as PVG, grid-tie inverter parameters, and resonance. These uncertain factors will exacerbate the frequency fluctuations of PVG integrated multi-area interconnected power systems. For such system, this paper proposes a load frequency control (LFC) strategy based on double equivalent-input-disturbance (EID) controllers. The PVG linear model and the multi-area interconnected power system linear mode

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Liu, Y., W. C. Guo, R. Cao, Z. Chen, and L. Wang. "Dynamic performance and sensitivity of grid-connected hydropower station under uncertain disturbance." IOP Conference Series: Earth and Environmental Science 1079, no. 1 (2022): 012113. http://dx.doi.org/10.1088/1755-1315/1079/1/012113.

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Abstract The grid-connected operating condition of hydropower station is a common operation mode to provide electric energy for the load side. This paper investigates the dynamic performance and sensitivity of grid-connected hydropower station (GCHS) under uncertain disturbance. Firstly, the nonlinear uncertain model of GCHS under uncertain disturbance is established. Then, the dynamic performance of GCHS is studied when the governor parameters change under certain step disturbance, periodic disturbance and uncertain random disturbance, respectively. Finally, based on the sensitivity index of

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Khramenkov, Vladislav, Aleksei Dmitrichev, and Vladimir Nekorkin. "Dynamics and stability of two power grids with hub cluster topologies." Cybernetics and Physics, Volume 8, 2019, Number 1 (June 20, 2019): 29–33. http://dx.doi.org/10.35470/2226-4116-2019-8-1-29-33.

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We report the results of study of two models of power grids with hub cluster topology based on the second-order Kuramoto system. The first model considered is the small grid consisting of a consumer and two generators. The second model is the Nizhny Novgorod power grid. The areas in the parameter spaces of the grids that corresponds to different modes, including working synchronous one, of their operation are obtained. The dynamic stability of synchronous mode in the Nizhny Novgorod power grid model to transient disturbances of the power at its elements is tested. We show that the stability of

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Nagaboopathy, Monigaa, Kumudini Devi Raguru Pandu, Ashmitha Selvaraj, and Anbuselvi Shanmugam Velu. "Improved Fault Resilience of GFM-GFL Converters in Ultra-Weak Grids Using Active Disturbance Rejection Control and Virtual Inertia Control." Sustainability 17, no. 14 (2025): 6619. https://doi.org/10.3390/su17146619.

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Enhancing the resilience of renewable energy systems in ultra-weak grids is crucial for promoting sustainable energy adoption and ensuring a reliable power supply during disturbances. Ultra-weak grids characterized by a very low Short-Circuit Ratio, less than 2, and high grid impedance significantly impair voltage and frequency stability, imposing challenging conditions for Inverter-Based Resources. To address these challenges, this paper considers a 110 KVA, three-phase, two-level Voltage Source Converter, interfacing a 700 V DC link to a 415 V AC ultra-weak grid. X/R = 1 is controlled using

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7

Anyangwe, C. N., C. N. Anyanwu, and C. Udanor. "Investigating Droop Control Contribution to Grid Resilience by Maintaining Frequency Stability During Grid Disturbances." Transactions on Engineering and Computing Sciences 13, no. 02 (2025): 84–94. https://doi.org/10.14738/tecs.1302.18485.

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In contrast to conventional power plants, which are based on large synchronous generators with large inertia capabilities to dampen sudden disturbances, renewable energy sources, such as solar and wind, connected to the grid through power electronics converters, display low system inertia and overload limiting capabilities. Additionally, because they lack primary frequency regulation capabilities, they are unable to actively respond to the frequency response of the system. This research investigates the contribution of droop control strategies to grid resilience by focusing on their ability to

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8

Anyangwe, C. N. "Investigating Droop Control Contribution to Grid Resilience by Maintaining Frequency Stability During Grid Disturbances." Transactions on Machine Learning and Artificial Intelligence 13, no. 02 (2025): 84–94. https://doi.org/10.14738/tmlai.1302.18485.

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In contrast to conventional power plants, which are based on large synchronous generators with large inertia capabilities to dampen sudden disturbances, renewable energy sources, such as solar and wind, connected to the grid through power electronics converters, display low system inertia and overload limiting capabilities. Additionally, because they lack primary frequency regulation capabilities, they are unable to actively respond to the frequency response of the system. This research investigates the contribution of droop control strategies to grid resilience by focusing on their ability to

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9

Vilmann, Benjamin, Peter Jan Randewijk, Hjörtur Jóhannsson, Jesper Hjerrild, and Ashraf Khalil. "Frequency and Voltage Compliance Capabilities of Grid-Forming Wind Turbines in Offshore Wind Farms in Weak AC Grids." Electronics 12, no. 5 (2023): 1114. http://dx.doi.org/10.3390/electronics12051114.

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Weak grid conditions challenge the grid integration of offshore wind farms. Especially grids with low inertia and large grid impedance questions frequency and voltage compliance capabilities. Grid-forming wind turbines are a promising technology for weak grids due to the nature of their control strategy. This paper explains the difference in how weak grid conditions are described in the literature and shows how the voltage stability margin changes with the short-circuit ratio and X/R ratio. With that knowledge, the frequency and voltage compliance capabilities of three grid-forming controls in

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10

Hasan, H., N. Nasaruddin, T. Tarmizi, and T. Y. Arief. "Performance analysis of grid-connected photovoltaic controller during voltage disturbances." IOP Conference Series: Earth and Environmental Science 1510, no. 1 (2025): 012086. https://doi.org/10.1088/1755-1315/1510/1/012086.

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Abstract The increasing integration of photovoltaic (PV) systems into modern power grids presents challenges in maintaining stability and performance under dynamic operating conditions, particularly during voltage disturbances. As renewable energy adoption accelerates, grid-connected PV systems must effectively handle grid fluctuations to ensure stable operation. Voltage disturbances, whether caused by grid faults, load variations, or network imbalances, can compromise power quality and system reliability. To address these challenges, this study investigates the performance of a grid-connected

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11

Benrabah, Abdeldjabar, and Dianguo Xu. "UDE-based current control of grid-connected photovoltaic inverters." COMPEL - The international journal for computation and mathematics in electrical and electronic engineering 38, no. 1 (2019): 183–98. http://dx.doi.org/10.1108/compel-02-2018-0092.

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Purpose The purpose of this study is to improve the control performance of grid-connected photovoltaic (PV) inverters with inductive-capacitive-inductive (LCL) filters by proposing a new robust current control based on uncertainty and disturbance estimator (UDE). Design/methodology/approach The control strategy combines the capacitor current feedback with a UDE-based control to solve robust stability issues in the presence of parametric uncertainties and disturbances. Findings This paper provides guidelines for tuning the controller parameters where it is shown to be easy to implement by simpl

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12

He, Guofeng, Guanxu Chen, Yanfei Dong, Guojiao Li, and Wenjie Zhang. "Research on LADRC of Grid-Connected Inverter Based on LCCL." Energies 15, no. 13 (2022): 4686. http://dx.doi.org/10.3390/en15134686.

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A grid-connected inverter’s stability is easily influenced by the system’s internal and external characteristics, especially when the grid-connected inverter is connected to the grid by an LCL filter, which complicates the system design and operating conditions. To handle the problem of disturbance in the high-order grid-connected system of the inverter, a linear active disturbance rejection control (LADRC) strategy based on LCCL (which divides the capacitor of the LCL filter into two halves in a specified proportion) is proposed in this paper. First, the system is reduced from third order to

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13

Zhang, Zhiru, and Wenfang Ding. "Improved Active Disturbance Rejection Control Strategy for LCL-Type Grid-Connected Inverters Based on the Backstepping Method." Electronics 11, no. 14 (2022): 2237. http://dx.doi.org/10.3390/electronics11142237.

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In the process of grid connection of an LCL inverter, sudden changes in load, high harmonics of the grid voltage, sudden changes in power, and other disturbances often occur. These will cause sharp degradation of the grid-connected power quality, so this paper proposes a new solution to the problem of how to reduce and eliminate disturbances in power quality by using a first-order linear active disturbance rejection control (LADRC) strategy with precise compensation via splitting the total disturbance term. An improved overall direct compensation method for total disturbance was proposed. The

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14

Maharjan, Manisha, Almir Ekic, Bennett Strombeck, and Di Wu. "An RTDS-Based Testbed for Investigating the Impacts of Transmission-Level Disturbances on Solar PV Operation." Energies 14, no. 13 (2021): 3867. http://dx.doi.org/10.3390/en14133867.

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The increasing penetration of renewable energy resources such as solar and wind via power electronic inverters is challenging grid dynamics, as well as grid planning, operation, and protection. Recently, the North American Electric Reliability Corporation (NERC) has reported a series of similar events of the unintended loss of solar generation in Southern California over a large geographic area following the transmission-level disturbances. These events highlight the importance of understanding the characteristics of the transmission-side disturbances propagating into the distribution systems

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15

Okedu, Kenneth E. "Augmentation of DFIG and PMSG Wind Turbines Transient Performance Using Different Fault Current Limiters." Energies 15, no. 13 (2022): 4817. http://dx.doi.org/10.3390/en15134817.

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The technology of variable speed wind turbines is very promising in renewable power generation. It is imperative for wind turbines to gain control after grid disturbances and contribute to the stability of power grids as part of the requirements of grid codes set by grid operators in operating wind farms. Fault current limiters (FCLs) are capable of augmenting the performance of wind turbines during grid disturbances. In this article, the augmentation of the Doubly Fed Induction Generator (DFIG) and the Permanent Magnet Synchronous Generator (PMSG) wind turbines, which are the two most popular

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16

Petronijevic, Milutin, Cedomir Milosavljevic, Boban Veselic, Senad Huseinbegovic, and Branislava Perunicic. "Discrete time quasi-sliding mode-based control of LCL grid inverters." Facta universitatis - series: Electronics and Energetics 36, no. 1 (2023): 133–58. http://dx.doi.org/10.2298/fuee2301133p.

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Application of a discrete time (DT) sliding mode controller (SMC) in the control structure of the primary controller of a three-phase LCL grid inverter is presented. The design of the inverter side current control loop is performed using a DT linear model of the grid inverter with LCL filter at output terminals. The DT quasi-sliding mode control was used due to its robustness to external and parametric disturbances. Additionally, in order to improve disturbance compensation, a disturbance compensator is also implemented. Also, a specific anti-windup mechanism has been implemented in the struct

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17

Safwan Sadeq, Mark Ovinis, and Saravanan Karuppanan. "Modeling and Simulation of PMSG Wind Energy Conversion System Using Active Disturbance Rejection Control." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 92, no. 1 (2022): 105–22. http://dx.doi.org/10.37934/arfmts.92.1.105122.

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Electrical power generated from wind turbines inherently fluctuates due to changing wind speeds. Without proper control, disturbances such as changing wind speeds can degrade the power quality factor and robustness of the electrical grid. To ensure good power quality factor, high performance and robustness of the grid against internal and external disturbances, the use of Active Disturbance Rejection Control with an extended state observer ESO for a PMSG Wind Energy Conversion System is investigated. The system has been simulated in MATLAB/Simulink at various wind speeds. The obtained simulati

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18

Elbouchikhi, Elhoussin, Muhammad Fahad Zia, Mohamed Benbouzid, and Soumia El Hani. "Overview of Signal Processing and Machine Learning for Smart Grid Condition Monitoring." Electronics 10, no. 21 (2021): 2725. http://dx.doi.org/10.3390/electronics10212725.

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Nowadays, the main grid is facing several challenges related to the integration of renewable energy resources, deployment of grid-level energy storage devices, deployment of new usages such as the electric vehicle, massive usage of power electronic devices at different electric grid stages and the inter-connection with microgrids and prosumers. To deal with these challenges, the concept of a smart, fault-tolerant, and self-healing power grid has emerged in the last few decades to move towards a more resilient and efficient global electrical network. The smart grid concept implies a bi-directio

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19

Esmail, Yahia M., Ali H. Kasem Alaboudy, M. S. Hassan, and Gamal M. Dousoky. "Mitigating power quality disturbances in smart grid using FACTS." Indonesian Journal of Electrical Engineering and Computer Science 22, no. 3 (2021): 1223. http://dx.doi.org/10.11591/ijeecs.v22.i3.pp1223-1235.

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Power quality (PQ) assurance is a vital part of electrical distribution networks. There are many advantages and benefits of improving PQ, especially in the modern/smart grid. Smart grid (SG) has a lot of complicated and sensitive electrical components (non-linear loads) in addition to renewable energy systems (wind-solar) that may also be a source of PQ disturbances. PQ problems harm personal life and national production. Static synchronous compensator (STATCOM) and unified power quality conditioner (UPQC) are among the fastest response flexible alternating current transmission systems (FACTS)

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20

Aine, Sandip, and P. B. Sujit. "Integrating Planning and Control for Efficient Path Planning in the Presence of Environmental Disturbances." Proceedings of the International Conference on Automated Planning and Scheduling 26 (March 30, 2016): 441–49. http://dx.doi.org/10.1609/icaps.v26i1.13797.

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Path planning for nonholonomic robots in real-life environments is a challenging problem, as the planner needs to consider the presence of obstacles, the kinematic constraints, and also the environmental disturbances (like wind and currents). In this paper, we develop a path planning algorithm called Control Based A* (CBA*), which integrates search-based planning (on grid) with a path-following controller, taking the motion constraints and external disturbances into account. We also present another algorithm called Dynamic Control Based A* (DCBA*), which improves upon CBA* by allowing the sear

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21

Niu, Haoran, Olufemi A. Omitaomu, and Qing C. Cao. "Machine Committee Framework for Power Grid Disturbances Analysis Using Synchrophasors Data." Smart Cities 4, no. 1 (2020): 1–16. http://dx.doi.org/10.3390/smartcities4010001.

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Events detection is a key challenge in power grid frequency disturbances analysis. Accurate detection of events is crucial for situational awareness of the power system. In this paper, we study the problem of events detection in power grid frequency disturbance analysis using synchrophasors data streams. Current events detection approaches for power grid rely on individual detection algorithm. This study integrates some of the existing detection algorithms using the concept of machine committee to develop improved detection approaches for grid disturbance analysis. Specifically, we propose two

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22

Qi, Xiao Qing, Wei Cao, Da Fei Wang, et al. "Study of the Operational Characteristics of Isolated Grid Fed with Hydro Generators, Diesel Generators and Photovoltaic Power Station." Advanced Materials Research 354-355 (October 2011): 959–63. http://dx.doi.org/10.4028/www.scientific.net/amr.354-355.959.

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When the isolated grid is influenced by disturbance，the power response characteristics of power supplies have an important impact on the operating characteristic of the isolated grid. Ali grid with non-energy storage PV power station was studied and simulated with PSASP software in this paper. The result shows that it is important to make sure the diesel generators participate in primary frequency regulation of the grid to enhance the system stability, especially in the case of PV power output disturbances.

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Esmail, Yahia M., Ali H. Kasem Alaboudy, M. S. Hassan, and Gamal M. Dousoky. "Mitigating power quality disturbances in smart grid using FACTS." Indonesian Journal of Electrical Engineering and Computer Science 22, no. 3 (2021): 1223–35. https://doi.org/10.11591/ijeecs.v22.i3.pp1223-1235.

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Power quality (PQ) assurance is a vital part of electrical distribution networks. There are many advantages and benefits of improving PQ, especially in the modern/smart grid. Smart grid (SG) has a lot of complicated and sensitive electrical components (non-linear loads) in addition to renewable energy systems (wind-solar) that may also be a source of PQ disturbances. PQ problems harm personal life and national production. Static synchronous compensator (STATCOM) and unified power quality conditioner (UPQC) are among the fastest response flexible alternating current transmission systems (FACTS)

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24

Sarafrazi, Parisa, Seyed Taher, and Ali Akhavan. "A Robust Backstepping Controller Based on Nonlinear Observer for Shunt Active Filters to Improve Power Quality in Four-Wire Distribution Systems." Jordan Journal of Electrical Engineering 10, no. 4 (2024): 1. http://dx.doi.org/10.5455/jjee.204-1700421844.

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This article introduces a novel approach to enhance the performance of LCL based active power filters (APFs) in four-wire distribution systems by employing a nonlinear current control strategy. The strategy combines backstepping control (BSC) and a nonlinear disturbance observer (NDOB) to effectively manage harmonic and interharmonic grid currents. By situating the shunt active power filter (SAPF) at the point of common coupling (PCC) via the LCL filter, the technique ensures that grid connected currents remain balanced and purely sinusoidal. The integration of NDOB with BSC aims to fortify th

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Alves, André G. P., Laís F. Crispino, Marcello S. Neves, Cleiton M. Freitas, Luís G. B. Rolim, and Robson F. S. Dias. "Harmonic Analysis of Grid-Connected VSCs Controlled in the Stationary Frame: Disturbance Rejection, Resonant Controller Design and Limitations." Eletrônica de Potência 29 (September 6, 2024): e202431. http://dx.doi.org/10.18618/rep.e20431.

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The increase in the penetration of inverter based renewable energy resources comes with several challenges. For one, the power quality can be cited as an issue due to the impact of the electronic devices in the grid voltage profile, which can cause harmonic disturbances and then affect all other installations nearby. Considering the issue previously described,} this paper analyzes the effects of grid voltage harmonic disturbances in the operation of a grid-connected Voltage Source Converter (VSC) with current control in the stationary reference frame. A mathematical model is derived and valida

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Kong, Jian, Lulu Shan, Xiao Yan, and Youkun Wang. "Analysis of Ionospheric Disturbance Response to the Heavy Rain Event." Remote Sensing 14, no. 3 (2022): 510. http://dx.doi.org/10.3390/rs14030510.

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Meteorological activities in the troposphere would affect electron concentrations and distributions in the ionosphere, thereby exciting ionospheric disturbance. To explore the ionospheric anomalies during severe convective weather, the ionospheric phenomenon during the heavy rainfall in Sichuan Province on 9 July 2013 was analyzed based on GNSS data. The Total Electron Content (TEC) are evaluated by carrier phase smoothed pseudoranges. Then, the dTEC (detrend TEC) sequences are obtained by using the cubic smoothing spline. They show obvious N-shaped ionospheric disturbances and have propagatio

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Jeong, Horyeong, Jong Hyuk Choi, and Jae Suk Lee. "A Current Control Algorithm to Improve Command Tracking Performance and Resilience of a Grid-Connected Inverter." Applied Sciences 10, no. 23 (2020): 8642. http://dx.doi.org/10.3390/app10238642.

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This paper presents a stationary reference frame grid current control algorithm for a grid-connected inverter (GCI) to improve command tracking performance and resilience in response to disturbances, i.e., a grid voltage incident in a GCI current control system. In the proposed algorithm, disturbance rejection is applied to reduce the overcurrent at the GCI in response to a grid fault. Disturbances to the GCI current control system are estimated using a grid current observer, and the estimate applied to the grid current controller to activate the disturbance rejection. The stationary reference

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Kelbert, Anna. "The Role of Global/Regional Earth Conductivity Models in Natural Geomagnetic Hazard Mitigation." Surveys in Geophysics 41, no. 1 (2019): 115–66. http://dx.doi.org/10.1007/s10712-019-09579-z.

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AbstractGeomagnetic disturbances cause perturbations in the Earth’s magnetic field which, by the principle of electromagnetic induction, in turn cause electric currents to flow in the Earth. These geomagnetically induced currents (GICs) also enter man-made technological conductors that are grounded; notably, telegraph systems, submarine cables and pipelines, and, perhaps most significantly, electric power grids, where transformer groundings at power grid substations serve as entry points for GICs. The strength of the GICs that flow through a transformer depends on multiple factors, including t

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Huang, Zixin, Wei Wang, Chengsong Yu, and Junjie Lu. "Improved Control Strategy for Dual-PWM Converter Based on Equivalent Input Disturbance." Electronics 13, no. 18 (2024): 3777. http://dx.doi.org/10.3390/electronics13183777.

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Aiming at the problems of jittering waveforms and poor power quality caused by external disturbances during the operation of a dual-pulse-width-modulation (PWM) converter, an improved terminal sliding mode control and an improved active disturbance rejection control (ADRC) are investigated. The method is based on mathematical models of grid-side and machine-side converters to design the controllers separately, and the balance between the two sides is maintained by the capacitor voltage. An improved terminal fuzzy sliding mode control and equivalent input disturbance (EID)-error-estimation-base

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Han, Yaofei, Guofeng He, Xiaohong Fan, Qingyu Zhao, and Huifang Shen. "Design and analysis of improved ADRC controller for multiple grid-connected photovoltaic inverters." Modern Physics Letters B 32, no. 34n36 (2018): 1740103. http://dx.doi.org/10.1142/s0217984918401036.

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When multiple inverters are connected to the grid, due to the uncertainty of the internal model and the presence of external disturbances, the grid-connected current waveform will deviate from the expectation. In this paper, Active Disturbance Rejection Control (ADRC) strategy is presented to suppress the internal and external perturbations, moreover, the first-order ADRC parameters are designed. Finally, MATLAB/Simulink is utilized to verify the control strategy of ADRC. The simulation results demonstrate that the ADRC method can suppress the disturbance effectively.

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Zimann, Felipe J., Eduardo V. Stangler, Francisco A. S. Neves, Alessandro L. Batschauer, and Marcello Mezaroba. "Coordinated Control of Active and Reactive Power Compensation for Voltage Regulation with Enhanced Disturbance Rejection Using Repetitive Vector-Control." Energies 13, no. 11 (2020): 2812. http://dx.doi.org/10.3390/en13112812.

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Voltage profile is one of many aspects that affect power quality in low-voltage distribution feeders. Weak grids have a typically high line impedance which results in remarkable voltage drops. Distribution grids generally have a high R/X ratio, which makes voltage regulation with reactive power compensation less effective than in high-voltage grids. Moreover, these networks are more susceptible to unbalance and harmonic voltage disturbances. This paper proposes an enhanced coordinated control of active and reactive power injected in a distribution grid for voltage regulation. Voltage drop miti

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Chen, Weidong, and Jianyuan Xu. "Cooperative Optimization Analysis of Variable-Speed and Fixed-Speed Pumped-Storage Units Under Large Disturbances in the Power System." Energies 18, no. 10 (2025): 2441. https://doi.org/10.3390/en18102441.

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Aimed at the large disturbance of a power system caused by frequent new energy clusters going off-grid, we propose a cooperative optimization strategy of variable-speed and constant-speed pumped-storage units to address power oscillation due to significant power shortages following the clusters going off-grid. From a multi-time-scale perspective, we first investigate the fast power support control strategy of variable-speed pumped-storage (VSPS) units during new energy cluster off-grid scenarios. Using a consensus algorithm, the VSPS acts as the primary unit, while the constant-speed unit prov

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Qian, Ping, Yu Juan Wang, Yin Zhong Ye, and Jin Sheng Liu. "Lifting Wavelet Detection Method of Transient Power Quality Disturbance for Power System Connected with Micro Grid." Applied Mechanics and Materials 568-570 (June 2014): 274–77. http://dx.doi.org/10.4028/www.scientific.net/amm.568-570.274.

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Based on the power quality disturbance problems of the power system connected with micro grid, The detecting method of transient power quality disturbance is mainly studied, which based on lifting wavelet transform, after the analysis of lifting wavelet construction principle, the transient power quality disturbance detecting method based lifting db4 wavelet is put forward, the results of simulation and comparison analysis prove that the method can detect and locate the transient power quality disturbances quickly and accurately, so that ,an effective and feasible method is provided to the res

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Ait Ramdane, Naima, Adel Rahoui, Boussad Boukais, Mohamed Fouad Benkhoris, Mourad Ait-Ahmed, and Ali Djerioui. "Design and Implementation of Robust H∞ Control for Improving Disturbance Rejection of Grid-Connected Three-Phase PWM Rectifiers." Energies 17, no. 9 (2024): 2166. http://dx.doi.org/10.3390/en17092166.

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In response to the high performance requirements of pulse width modulation (PWM) converters in grid-connected power systems, H-Infinity (H∞) control has attracted significant research interest due to its robustness against parameter variations and external disturbances. In this work, an advanced robust H∞ control is proposed for a grid-connected three-phase PWM rectifier. A two-level control strategy is adopted, where cascaded H∞ controllers are designed to simultaneously regulate the DC bus voltage and input currents even under load disturbances and non-ideal grid conditions. As a result, uni

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Zhang, Yong Gang, Ming Yang Sun, Xian Feng Xu, and Wei Jin Zhuang. "Identification of the Maximum Wind Penetration Level during Over-Frequency Disturbances." Advanced Materials Research 805-806 (September 2013): 364–69. http://dx.doi.org/10.4028/www.scientific.net/amr.805-806.364.

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Todays power system is integrating increasingly variable and uncertain generation resources, especially wind power. As much of wind generators in the market contribute little or none to system inertia, power system is operated much closer to its dynamic security margin. To identify the maximum wind penetration of a power system following a pre-defined disturbance, the impact of increased wind penetration on post-disturbance stability is studied. In this paper, the disturbance is simulated by a short circuit that leads to the sudden disconnection of a large amount of load demand. When wind powe

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Ali, Muhammad Arif Sharafat. "LMI-Based State Feedback Control Structure for Resolving Grid Connectivity Issues in DFIG-Based WT Systems." Eng 2, no. 4 (2021): 562–91. http://dx.doi.org/10.3390/eng2040036.

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Pertaining to the connectivity issues in wind power plants with grids, this study introduces an efficient mechanism based on a state feedback control structure to establish a fast and stable grid connection for a wind-driven doubly-fed induction generator (DFIG). Owing to a direct link through stator windings, a DFIG is significantly vulnerable to grid disturbances and experiences sizable inrush currents when connected to the power grid. The proposed control structure is designed based on a linear matrix inequality stabilization criterion, which is framed using a suitable Lyapunov candidate fu

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Zhao, Zhenqing, Kai Song, Boyan Huang, et al. "A Robust Linear Active Disturbance Rejection Control for Renewable Energy Grid-Connected System Based on APF." Sustainability 17, no. 2 (2025): 632. https://doi.org/10.3390/su17020632.

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With the energy transition and changes in electrical load structures, harmonic distortion in power systems is increasingly threatening grid stability, especially during the integration of renewable energy sources. Active power filters (APFs) are commonly used to improve power quality, but current fluctuations and voltage instability caused by DC-side capacitor charging and discharging hinder effective harmonic compensation. To address this, this paper presents a method combining a variable-step-size adaptive linear predictor with linear active disturbance rejection control (VALP-LADRC). By int

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Tyreek, Alexander, Mohammed Masud Rana, and Boker Agii. "Power Quality Dynamics in a Fully Connected Mesh Network with High Photovoltaic Penetration." European Journal of Electrical Engineering and Computer Science 9, no. 3 (2025): 23–29. https://doi.org/10.24018/ejece.2025.9.3.706.

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This paper proposes a fully connected mesh grid will rid users of much of the current power quality disturbances. The paper first distinguishes a mesh network grid from a traditional grid. Then, the paper identifies common power quality disturbances in the traditional grid and how they are translated into a mesh network. Finally, the paper describes a power quality device that is integral for the mesh connected network to be feasible.

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null, Yaouba, Albert Ayang, Ahmat Tom, and Noël Djongyang. "Adaptive Generalized Extended State Observer for a Single Phase PV Grid-connected System Operating Under the Sudanese-Sahelian Climate of Cameroon." International Journal of Energy and Power Engineering 13, no. 5 (2024): 73–96. http://dx.doi.org/10.11648/j.ijepe.20241305.11.

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Knowing the health of a system allows to guarante its efficiency and sustainability. The state observer is one of several techniques used by authors to estimate system state. This paper focuses on the problem of simultaneous states estimation of DC (Direct Current) and AC (Alternating Current) sides of a single-phase Photovoltaic (PV) grid-connected operating under the Sudanese-Sahelian climate of Cameroon. A generalized extended state observer (GESO) has been designed to simultaneously estimate the three states and the three disturbances of the system. A good estimation of the state and distu

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Yonggang Dong, Yonggang Dong, Shichao Cao Yonggang Dong, and Haoliang Yang Shichao Cao. "Research on Influence of Distributed Energy Accessing Power Grid System Based on Integral Projection Algorithm." 電腦學刊 34, no. 3 (2023): 165–78. http://dx.doi.org/10.53106/199115992023063403012.

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<p>A large number of distributed energy sources connected to the grid will cause certain disturbances to the stability of the grid system. We consider the random characteristics and establish a dynamic simulation framework for the active power distribution system suitable for the integral projection algorithm. The article uses an internal integrator to solve the fast dynamic process with explicit and implicit Euler methods in small steps. In the calculation process, this method can effectively consider the influence of events such as fault disturbance on the grid connection of the distri

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Gonzalez-Abreu, A. D., M. Delgado-Prieto, J. J. Saucedo-Dorantes, and R. A. Osornio-Rios. "Novelty Detection on Power Quality Disturbances Monitoring." Renewable Energy and Power Quality Journal 19 (September 2021): 211–16. http://dx.doi.org/10.24084/repqj19.259.

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Complex disturbance patterns take place over the corresponding power supply networks due to the increased complexity of electrical loads at industrial plants. Such complex patterns are the result of a combination of simpler standardized disturbances. However, their detection and identification represent a challenge to current power quality monitoring systems. The detection of disturbances and their identification would allow early and effective decision-making processes towards optimal power grid controls or maintenance and security operations of the grid. In this regard, this paper presents a

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Evald, Paulo Jefferson Dias de Oliveira. "A Direct Discrete-Time Output Feedback-based LS-RMRAC for Grid-tied Current Control Loop of a Static 3-Wire Converter under Unbalanced Grid Voltage Conditions." ForScience 10, no. 1 (2022): e00993. http://dx.doi.org/10.29069/forscience.2022v10n1.e993.

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Nowadays, renewable energy generation is a worldwide tendency. These clean sources are generally tied to the grid by voltage-fed static converters. In this work, a direct discrete-time Output Feedback-based LS (Least Squares)-RMRAC (Robust Model Reference Adaptive Control) is proposed for grid-side current loop control of a static 3-wire converter connected to the grid through LCL filter. The proposed control method mitigates the LCL filter resonance,rejects grid disturbances without needing Resonant Controllers implementation, and deals properly with grid uncertainties and parametric variatio

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Zhang, Miao, Keyu Zhuang, Tong Zhao, et al. "Bus Voltage Control of Photovoltaic Grid Connected Inverter Based on Adaptive Linear Active Disturbance Rejection." Energies 15, no. 15 (2022): 5556. http://dx.doi.org/10.3390/en15155556.

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According to the traditional voltage and current double closed-loop control mode, the inverter management strategy for photovoltaic grid connection has insufficient anti-interference ability and slow response. This paper proposes a control strategy that applies adaptive-linear active disturbance rejection control (A–LADRC) to the outer loop control to achieve the purpose of anti-interference. The control strategy uses the linear extended state observer (LESO) to evaluate external interference caused by the change of external conditions and the internal disturbance caused by parameter uncertain

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Wang, Li, Wentao Sun, Jie Zhao, and Dichen Liu. "A Speed-Governing System Model with Over-Frequency Protection for Nuclear Power Generating Units." Energies 13, no. 1 (2019): 173. http://dx.doi.org/10.3390/en13010173.

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Overspeed is more likely to occur in the process of load rejection or large disturbances for nuclear steam turbines due to the large parameter range and low steam parameters, as well as the power of the low-pressure cylinder accounting for a high proportion of the total power. It is of great significance to study the overspeed characteristics of nuclear power plants (NPPs) to ensure the safe and stable operation of the unit and power grid. According to the characteristics of NPPs, the overspeed protection model and the super-acceleration protection model were established, which were added to t

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Yin, Jun, Ziang Chen, Weichen Qian, and Shengyu Zhou. "A Virtual Synchronous Generator Low-Voltage Ride-Through Control Strategy Considering Complex Grid Faults." Applied Sciences 15, no. 4 (2025): 1920. https://doi.org/10.3390/app15041920.

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The Virtual Synchronous Generator (VSG) control strategy has garnered widespread application during the low-voltage ride-through (LVRT) of distributed energy resources integrated into power grids, primarily due to its inertia and damping properties. However, grid voltage dips frequently coincide with unbalanced conditions and harmonic disturbances, against which traditional VSG LVRT control strategies offer limited resilience, resulting in unbalanced and unstable grid-connected currents. Consequently, this impacts the VSG’s support for voltage at the point of common coupling (PCC) during LVRT,

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Gonzalez-Abreu, Artvin-Darien, Miguel Delgado-Prieto, Roque-Alfredo Osornio-Rios, Juan-Jose Saucedo-Dorantes, and Rene-de-Jesus Romero-Troncoso. "A Novel Deep Learning-Based Diagnosis Method Applied to Power Quality Disturbances." Energies 14, no. 10 (2021): 2839. http://dx.doi.org/10.3390/en14102839.

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Monitoring electrical power quality has become a priority in the industrial sector background: avoiding unwanted effects that affect the whole performance at industrial facilities is an aim. The lack of commercial equipment capable of detecting them is a proven fact. Studies and research related to these types of grid behaviors are still a subject for which contributions are required. Although research has been conducted for disturbance detection, most methodologies consider only a few standardized disturbance combinations. This paper proposes an innovative deep learning-based diagnosis method

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Hadjidemetriou, Lenos, Yongheng Yang, Elias Kyriakides, and Frede Blaabjerg. "A Synchronization Scheme for Single-Phase Grid-Tied Inverters under Harmonic Distortion and Grid Disturbances." IEEE Transactions on Power Electronics 32, no. 4 (2017): 2784–93. https://doi.org/10.5281/zenodo.1037130.

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Synchronization is a crucial aspect in grid-tied systems, including single-phase photovoltaic inverters, and it can affect the overall performance of the system. Among prior-art synchronization schemes, the Multi Harmonic Decoupling Cell Phase-Locked Loop (MHDC-PLL) presents a fast response under grid disturbances and high accuracy under harmonic distortions. However, major drawbacks of the MHDC-PLL include increased complexity and inaccurate response under non-nominal frequencies, which may occur in practical applications. Thus, this paper proposes strategies to address these issues. At first

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Feng, Zhi, Xiaojie Zhou, Chan Wang, Weizhou Huang, and Ziqi Chen. "LADRC-based grid-connected control strategy for single-phase LCL-type inverters." PLOS ONE 19, no. 5 (2024): e0303591. http://dx.doi.org/10.1371/journal.pone.0303591.

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To ensure that grid-connected currents are of high quality, it is crucial to optimize the dynamic performance of grid-connected inverters and their control. This study suggests using a combination of reduced-order linear active disturbance rejection control (LADRC) and a Proportional-Integral (PI) controller. By applying this control strategy to a single-phase photovoltaic grid-connected system, the system’s ability to suppress grid harmonics is significantly improved. The validity and effectiveness of this control approach have been confirmed through simulations and experiments. The results s

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Al-Shetwi, Ali Q., Walid K. Issa, Raed F. Aqeil, et al. "Active Power Control to Mitigate Frequency Deviations in Large-Scale Grid-Connected PV System Using Grid-Forming Single-Stage Inverters." Energies 15, no. 6 (2022): 2035. http://dx.doi.org/10.3390/en15062035.

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Over the last few years, the number of grid-connected photovoltaic systems (GCPVS) has expanded substantially. The increase in GCPVS integration may lead to operational issues for the grid. Thus, modern GCPVS control mechanisms should be used to improve grid efficiency, reliability, and stability. In terms of frequency stability, conventional generating units usually have a governor control that regulates the primary load frequency in cases of imbalance situations. This control should be activated immediately to avoid a significant frequency variation. Recently, renewable distribution generato

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Adelakun, Najeem Olawale, and Banji Abubakar Olanipekun. "Outage Analysis and System Disturbances on 330 kV and 132 kV Transmission System in Nigeria." European Journal of Engineering Research and Science 5, no. 1 (2020): 100–102. http://dx.doi.org/10.24018/ejers.2020.5.1.1722.

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The Persistent power outage in the country due to faults has become alarming to the government and the body responsible for electricity generation in the country. It also creates a major problem for electricity consumers in Nigeria, there must be an improvement in the reliability of the transmission system in Nigeria. This research work is predominantly concerned with the analysis of outages on 330kV and 132kV transmission system, and system disturbances on generation and transmission system for five (5) years. The result shows that the forced outages are the most occurred outages on the 330 k

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