Yunyang Xu

Optimized voltage droop control strategy for renewable energy station under unbalanced voltage

Yongcan Wang, Jian Li, Yunyang Xu, Xi Wang et autres

Dimension-Reduction Method and Influencing Factor Analysis for Unit Clusters in Centralized Renewable Energy Stations Considering Short-Circuit Current Fitting Characteristics

Jian Li, Bo Zhou, Yunyang Xu, Xinwei Sun et autres

The large-scale integration of inverter-interfaced renewable generation has made the steady-state short-circuit current of renewable energy stations increasingly important for setting protections, planning, and fault analysis. Traditional single-unit multiplication methods are computationally efficient but often ignore the effects of internal electrical distance …

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Two-Layer Coordinated Optimization and Control Method for Wind Farms Considering Both Point of Common Coupling Voltage Level and Generator Terminal Voltage Security

Bo Zhou, Yongcan Wang, Yunyang Xu, Xiaofeng Jiang et autres

In large wind farms, uneven voltage distribution caused by feeder impedance and turbine spacing may pose safety hazards and reduce operational efficiency. This paper proposes a two-layer voltage coordination optimal control method for wind farms that balances both grid-connection point voltage levels …

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Dynamic Modeling and Online Updating of Full-Power Converter Wind Turbines Based on Physics-Informed Neural Networks and Bayesian Neural Networks

Yunyang Xu, Bo Zhou, Xinwei Sun, Yuting Tian et autres

This paper presents a dynamic model for full-power converter permanent magnet synchronous wind turbines based on Physics-Informed Neural Networks (PINNs). The model integrates the physical dynamics of the wind turbine directly into the loss function, enabling high-accuracy equivalent modeling with limited data …

HNCC: Host-Network Collaborative Congestion Control for RDMA

Dezun Dong, Ke Wu, Yunyang Xu

Driven by the rapidly growing demands of modern applications, RDMA technology has been widely adopted in cluster networks, including high-performance computing (HPC) systems and datacenters. However, the high-speed, kernel-bypass nature of RDMA presents significant challenges for congestion control (CC). On one hand, …

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Segmented Online Identification of Broadband Oscillation Impedance Based on ASSA

Yunyang Xu, Xinwei Sun, Bo Zhou, Xiaofeng Jiang

This paper addresses the challenges of broadband impedance identification in wind farms connected to the power grid, where broadband oscillations can compromise grid stability. Traditional impedance modeling approaches, including white-box and black/grey-box methods, face limitations in real-world applications, particularly when dealing with …

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The Hybrid AC-DC Dynamic Order-Reduced Modeling Method and Damping Enhancement Strategy Based on Improved ERAG

Bo Zhou, Xinwei Sun, Wei Wei, Yunyang Xu

Decentralized control offers a more effective way to avoid the complexities and coordination challenges encountered in centralized control. In the decentralized design of additional controllers for multi-infeed DC transmission systems, it is crucial to focus on the interactions among the controllers. To …

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Research on the multi-objective collaboration damping control strategy based on multi-resource

Bo Zhou, Yunyang Xu, Xinwei Sun, Xiaofeng Jiang

To improve the stability margin of the power grid under unconventional conditions and enhance the fault emergency support capability of AC/DC grids, this paper investigates multi-resource and multi-objective collaboration damping control strategy method based on a multi-input multi-output (MIMO) system model, which …

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A Preliminary Study on the Application of Large Language Models in Power System Simulations

Xinwei Sun, Yunyang Xu, Tannan Xiao, Han Diao et autres

The digital update of power systems requires the support of intelligent application systems. Therefore, this paper investigates the utilization of a cutting-edge artificial intelligence technology called the Large Language Model (LLM) in power system simulations. The study provides a comprehensive overview of …

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Research on the Quantitative Assessment Method of HVDC Transmission Line Failure Risk during Wildfire Disaster

Bo Zhou, Xinwei Sun, Yunyang Xu, Wei Wei

It is increasingly important to effectively predict the failure of HVDC transmission lines caused by wildfire disasters. On the basis of comprehensively considering the distribution of fire points, the characteristics of wildfire propagation, and the failure factors of the transmission line, a …

Event-driven based simulation method for security and stability control strategies of power system

Bo Zhou, Xinwei Sun, Yongkang Wang, Yunyang Xu et autres

Abstract Since the security and stability control strategies (SSCSs) play a pivotal role in maintaining system stability, devising the strategies accurately and reliably is of great significance. Currently, SSCSs are typically formulated according to the ‘offline simulation and online matching’ approach. However, …

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Modeling of Three-Winding Transformer Based on Shifted-Frequency Transformation

Xinwei Sun, Bo Zhou, Yunyang Xu, Yankan Song et autres

In order to solve the problems of small step-size and low efficiency of traditional electromagnetic transient (EMT) simulation of power system, a large-step shifted frequency-based EMT (SFEMT) simulation method has been proposed in literature. However, there is still a lack of SFEMT …

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