A5046497712- Power Systems and Renewable Energy
- Microgrid Control and Optimization
- Power Systems Fault Detection
- Power System Optimization and Stability
- Advanced DC-DC Converters
- Digital Media Forensic Detection
- Advanced Steganography and Watermarking Techniques
- Islanding Detection in Power Systems
- Optimal Power Flow Distribution
- High-Voltage Power Transmission Systems
- Power Systems and Technologies
- HVDC Systems and Fault Protection
- Biometric Identification and Security
Sichuan University of Science and Engineering
2020-2025
Yibin University
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...
At present, due to the fact that large-scale distributed photovoltaics can access distribution networks and there is a mismatch between load demand photovoltaic output time, it difficult for traditional planning meet partition-based control of high permeability grid-connected operations. As solution this problem, paper proposes method storage partitions. First all, partitioning electrical distance modularity based on voltage/active power voltage/reactive presented, along with modified...
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,...
At present, most watermarking algorithms use linear correlation method to detect watermarks. However, when the original media signal does not obey Gaussian distribution, or watermark is embedded into object be protected, this has certain problems. The imperceptibility constraint of digital determines that detection a weak problem. Using feature, firstly, based on statistical characteristics DCT (discrete cosine transform) and DWT wavelet transform), generalized distribution used establish...
Abstract Power system stabilizer plays an important role in suppressing the low frequency oscillations, but a PSS with poorly tuned parameters may produce negative damping and aggravate oscillation. The purpose of this paper is to study mechanism multi machine analyze whether has produced damping. This adopts Park model for analysis. According concepts complex generalized phasor, correlation between torque phasor real part eigenvalue studied. With auxiliary equivalent circuits, provided by...