Siqi Bu’s Post

📢 Exciting news alert! Check out this insightful blog post on "Optimization-based Framework for Selecting Under-frequency Load Shedding Parameters" to learn about the critical role of Under-Frequency Load Shedding in protecting power systems with high renewable energy penetration. The post introduces a novel Mixed Integer Linear Program that optimizes UFLS setpoints, taking into account network spatial information and DER generation mix. Dive into the details and empirical validation on the dynamic IEEE 39-bus system! Read the full post at https://bit.ly/3SenRgU. #RenewableEnergy #PowerSystems #UFLS #EnergyOptimization

✔ 📰 New publication for the Ingenium Research Group "Review of sub-synchronous interaction in wind integrated power systems: classification, challenges, and mitigation techniques" by Neevatika Verma, Narendra Kumar, Saket Gupta, Hasmat Malik at University of Technology Malaysia and Prof. Fausto Pedro García Márquez at Universidad de Castilla-La Mancha in #Protection and #Control of Modern #PowerSystems https://lnkd.in/dnQWQwVv Abstract: Emerging sub-synchronous interactions (SSI) in wind-integrated power systems have added intense attention after numerous incidents in the US and China due to the involvement of series compensated transmission lines and power electronics devices. SSI phenomenon occurs when two power system elements exchange energy below the synchronous frequency. SSI phenomenon related to wind power plants is one of the most significant challenges to maintaining stability, while SSI phenomenon in practical wind farms, which has been observed recently, has not yet been described on the source of conventional SSI literature. This paper first explains the traditional development of SSI and its classification as given by the IEEE, and then it proposes a classification of SSI according to the current research status, reviews several mitigation techniques and challenges, and discusses analysis techniques for SSI. The paper also describes the effect of the active damping controllers, control scheme parameters, degree of series compensation, and various techniques used in wind power plants (WPPs). In particular, a supplementary damping controller with converter controllers in Doubly Fed Induction Generator based WPPs is briefly pronounced. This paper provides a realistic viewpoint and a potential outlook for the readers to properly deal with SSI and its mitigation techniques, which can help power engineers for the planning, economical operation, and future expansion of sustainable development.

📰 Aero-Servo-Elastic Simulation of the International Energy Agency’s 15MW Reference Wind Turbine for Direct-Drive Generator Integrity Modelling ✍ Magnus Bichan, Pablo Jaen-Sola, نزمي السلامي sellami Nazmi and Firdaus Muhammad Sukki This paper presents the development of a full turbine model and subsequent aero-servo-elastic simulation of the IEA 15MW Reference Wind Turbine, such that aerodynamic loads can be obtained and then applied to a simplified drivetrain in Finite-Element Analysis. This approach facilitates the quantification, through a computationally efficient method, of airgap deflections within the direct-drive generator caused by the shaft eccentricity that arises from aerodynamic loads. Shaft deflections were found to be higher under rated wind speeds than higher operating speeds, and the aero-servo-elastic model presented here performs favourably compared to later-published models. 🔗 Read the paper at https://lnkd.in/dzvi2H3z. #modelling; #aerodynamic #generatoroptimisation #windturbin

🎉 Exciting News! 🎉 I'm thrilled to share the publication of our latest research - 'Impact of DC-Link Voltage Control on Torsional Vibrations in Grid-Forming PMSG Wind Turbines'! 🔍 In the paper with Heng Wu, Xiongfei Wang, and Theo Bosma, we focused on three dc-link voltage control strategies and their unique effects on the torsional dynamics of grid-forming permanent magnet synchronous generator wind turbines. 📈 Using the developed reduced-order small-signal model, we applied the complex torque coefficients method to extract and analyze the natural frequency and damping ratio of torsional modes. 🔗 To ensure our findings are robust, we conducted nonlinear time-domain simulations that confirmed our theoretical predictions. If you're interested in the technical depths of renewable energy technology, you might find our insights valuable. 👉 Feel free to reach out if you have questions or want to discuss this further! #WindTurbines #RenewableEnergy #EngineeringResearch #SustainableEnergy #Wingrid #Gridforming #AAUenergy #DNV

We are very glad to share our recent article regarding probabilistic analysis of power system small-signal stability considering the wake effects of wind farms, published in IEEE Transactions on Power Systems. Conventional power system stability analysis normally treats the wind farm as an aggregated model for the simplification of analysis. By proposing an analytical wake effect model and applying it in stability studies, we have effectively proved that it is necessary to consider the wake effects of wind farms in probabilistic analysis of small-signal stability. For more details, please visit the link below: https://lnkd.in/gCDNhZpw #power #energy #decarbonization #renewableenergy #windenergy #windpower #digitalization #powergrids #smartgrid #powersystems #distributionsystems #security #stability #dynamics #oscillation #resonance #powerelectronics #operation #control #situationalawareness #PMU #probability #risk

In this study modeled wind energy conversion system (WECS). The maximum power tracking point (MPPT) algorithm is achieved by minimizing tracking errors between the angular shaft speed reference based on wind speed estimation and its actual values in the variable speed WECS. Also, the estimated aerodynamic torque is used to define the reference electromagnetic torque. This is possible when WECS is partially loaded and pitches angles are fixed at the position to generate maximum power. The mean absolute percentage error of the angular shaft speed of the PMSG-based WECS has been reduced by more than 71% under model uncertainty and noise presented case than in the traditional disturbance observers-based compensation scheme. While the disturbance observers for estimation model uncertainty are eliminated. Cite: B. Sarsembayev, N. Zhakiyev, A. Kushekkaliyev, K. Kayisli and T. D. Do, "Output Regulation-based Optimal Control System for Maximum Power Extraction of a Machine-side Power Converter in Variable-Speed WECS," in IEEE Access, doi: 10.1109/ACCESS.2024.3352546. (Scopus citescore 9.0, percentile-92, WoS Q1).  https://lnkd.in/gFFtEZ55 Korhan Kayisli, Ton Do, Alman Kushekkaliev #OptimalControl #ControlSystem #MaximumPowerExtraction #PowerConverter #VariableSpeed #WindEnergy #IEEE #IEEEAccess

When applying grid-forming control in wind turbines, its impact on the turbine's mechanical dynamics has, unfortunately, not yet attracted enough attention. Collaborated with DNV, our recent joint publications have pointed out that the GFM control might reduce the damping of the torsional modes of the drivetrain, thereby inducing higher risk of torsional vibrations. This is an emerging topic that needs more R&D efforts, the #electricalengineer and #mechnicalenginner should work together #Powersystem #Powerelectroincs #Gridforming #Windturbine #Torsionalvibrations https://lnkd.in/d-Mze4Sd

#article Design of Spoke-Type Permanent Magnet Synchronous Generator for Low Capacity Wind Turbine Considering Magnetization and Cogging Torques by Dong-Ho Kim, Hyun-Jo Pyo, Won-Ho Kim, Ju Lee and Ki-Doek Lee Full text: https://lnkd.in/grYs_Ave #generators #permanentmagnetmachines #electricmachines #magnetization

I am thrilled to share that two of my papers (191 & 192) have been accepted for presentation at the 2024 Modeling, Estimation, and Control Conference (MECC24)! Paper 192, titled "Multivariable Control Design for Load Reduction on Wind Turbines," focuses on the coupling effects among various fatigue loads. It proposes a control structure that quantifies the level of interaction between inputs and outputs, effectively mitigating the coupling effect. This leads to improved performance and a significant reduction in fatigue loads for land-based wind turbines. Paper 191, titled "Modeling, Validation, and Control of the IEA-15MW Reference Wind Turbine and Volturnus-S Platform," focuses on integrating land-based turbine with a semi-submersible floating platform. It validates the system’s dynamic behavior using the industry standard OpenFAST model. I’m excited to present our findings and connect with fellow researchers and experts at #MECC2024! #ModelingAndSimulation #ControlDesign #WindEnergy #Dynamics #MechanicalEngineering #CleanEnergy

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