A5059477184- Microgrid Control and Optimization
- Power Systems and Renewable Energy
- Wind Turbine Control Systems
- HVDC Systems and Fault Protection
- Energy Load and Power Forecasting
- Innovative concrete reinforcement materials
- Structural Behavior of Reinforced Concrete
- Power System Optimization and Stability
- Advanced DC-DC Converters
- Wind Energy Research and Development
- Machine Fault Diagnosis Techniques
- Structural Load-Bearing Analysis
- PAPR reduction in OFDM
- Innovations in Concrete and Construction Materials
- Advanced Algorithms and Applications
- Engineering Applied Research
- Mechanical Failure Analysis and Simulation
- Vehicle License Plate Recognition
- Nonlinear Dynamics and Pattern Formation
- stochastic dynamics and bifurcation
Sichuan University of Science and Engineering
2024-2025
Lanzhou University of Technology
2021-2023
To mitigate the challenges posed by transient oscillations and steady-state deviations in traditional virtual synchronous generator (TVSG) that is subjected to active power grid frequency disturbances, a VSG control strategy based on Transient Damping Compensation Virtual Inertia Adaptation presented. Initially, closed-loop small-signal model for grid-connected loop (APL) of TVSG constructed, which highlights contradiction between dynamic static characteristics output through analysis root...
This research proposes a novel adaptive virtual synchronous generator (VSG) control strategy for photovoltaic-energy storage (PV-storage) hybrid system. In comparison to the traditional VSG approach, presented in this markedly diminishes fluctuations output power. improvement is accomplished through dynamic adjustment of inertia (J) and damping coefficient (D), which enables real-time responsiveness variations light intensity, converter power, load power factors that controls are unable...
The given power and grid frequency disturbances can cause transient oscillations steady-state deviations in the output of a virtual synchronous generator (VSG), which be effectively addressed by adding damping. However, this approach may result significant overshoot. This article proposes an improved VSG control strategy based on electromagnetic feedback compensation small-signal model reduction scheme. Firstly, grid-connected active closed-loop models typical damping are established,...
For analyzing the problem of frequent wideband oscillations in grid-connected renewable energy generation systems, an analysis method based on small-world networks and fast-slow dynamics is proposed. A direct-driven permanent magnet synchronous generator (DPMSG) was chosen as example to discuss process bursting a single system with both alternating large-amplitude micro-amplitude due multi-timescale coupling effect introduced by disturbance. Meanwhile, complex network consisting multiple...
In the process of integrating large-scale wind farms into power system, harmonic interaction among causes potential safe and stable operation threats to grid. To effectively control harmonics grid-connected quantitative analysis is very necessary meaningful. Therefore, this paper firstly explains from perspective primary secondary emission. We use concept impedance analyze mechanism proposed a calculation method for interaction. Using method, influence caused by farm self-impedance, contact...
With the increasing proportion of wind power in system, a significant threat is posed to safe and stable operation regional grids consumption new energy by harmonic interaction effects among farms. Aimed at problem mechanism for between farms degree influence, an aggregation equivalence method loss proposed, where complexity farm calculation reduced. Based on this, impedance model multiple grid-connected system established, influence revealed. The definition current factor presented,...
The large-scale integration of wind power into the grid can cause a new type sub-synchronous oscillation, different from traditional thermal generation. oscillation energy will spread extensively in grid, causing and even grid-cascading events. To address this issue, article proposes method for quantitatively analyzing propagation characteristics based on branch energy. Firstly, shared by branches network transient function. Next, is proposed to identify dominant path defining under mode...
Hybrid fiber-reinforced cementitious composites (HyFRCCs) have a higher deformation capacity than conventional concrete, owing to the bridging effect of fibers. HyFRCCs with polyvinyl alcohol (PVA) fibers and steel (ST) (HyFRCCs-PVA/ST) attracted significant research interest. Existing mainly focused on their material performance. This study aims evaluate seismic performance HyFRCCs-PVA/ST columns different fiber volume ratios. Six (FRCCs) ratios were designed assigned corresponding column...
Abstract These days, the harmonic problem of wind power grid‐connected systems is becoming increasingly prominent due to increase in number large‐scale centralized farms and gradual trend high‐proportion electronics for source‐grid loads. The oscillation caused by electronic equipment provides propagating system, interaction makes propagation more complex. First, system simplified into radiation relationship between farm each branch solve current multiple farms. Then, analysis method used...