A5100434106- HVDC Systems and Fault Protection
- High-Voltage Power Transmission Systems
- Power Systems Fault Detection
- Power Systems and Technologies
- Advancements in Battery Materials
- Microgrid Control and Optimization
- Advanced Battery Materials and Technologies
- Supercapacitor Materials and Fabrication
- Smart Grid Security and Resilience
- Smart Grid and Power Systems
- Electrochemical sensors and biosensors
- Aerosol Filtration and Electrostatic Precipitation
- Power Systems and Renewable Energy
- Power System Optimization and Stability
- Electric Motor Design and Analysis
- Lightning and Electromagnetic Phenomena
- High voltage insulation and dielectric phenomena
- Plasma Diagnostics and Applications
- Advanced Battery Technologies Research
- Magnetic Properties and Applications
- Magnetic Bearings and Levitation Dynamics
- Electrochemical Analysis and Applications
- Smart Grid Energy Management
- Thermal Analysis in Power Transmission
- Frequency Control in Power Systems
South China University of Technology
2015-2025
Yalong Hydro (China)
2024-2025
University of Science and Technology Liaoning
2003-2025
Lanzhou University of Technology
2023-2024
National Institute of Clean and Low-Carbon Energy
2023-2024
Shanghai University of Electric Power
2019-2024
Electric Power University
2024
Shanghai Electric (China)
2024
Jiangsu University
2017-2023
Hunan Institute of Engineering
2023
Electric load forecasting plays a vital role in smart grids. Short term electric forecasts the that is several hours to weeks ahead. Due nonlinear, non-stationary and nonseasonal nature of short time series small scale power systems, accurate challenging. This paper explores Long-Short-Term-Memory (LSTM) based Recurrent Neural Network (RNN) deal with this challenge. LSTM-based RNN able exploit long dependencies for more forecasting. Experiments are conducted demonstrate capable accurately...
This paper proposes a dual-bridge (DB) LLC resonant converter for wide input applications. The topology is an integration of half-bridge (HB) circuit and full-bridge (FB) circuit. fixed-frequency pulsewidth-modulated (PWM) control employed range twice the minimum voltage can be covered. Compared with traditional pulse frequency modulation (PFM) controlled HB/FB converter, gain independent quality factor, magnetizing inductor has little influence on gain, which simplify parameter selection...
To overcome the disadvantage of voltage dependent current order limiter HVDC control system, which cannot achieve decoupling reactive power and active power, a novel ac fault recovery strategy is proposed in this study. By virtue such strategy, exchange between system converter station can be controlled quantitatively to find correspondence dc bus voltage. In determine expected consumption converters, instantaneous theory used calculate compensated by filters. According quasi steady-state...
The travelling wave protection and under voltage which are initiated by the rate of change can not detect high impedance fault. operation time differential is so long that it play role back-up DC line What's more, HVDC control system has great influence on performance characteristic protection, especially in case low load level. will miss tripping because current fluctuation caused system. Based EMTDC simulation including actual parameters, models, currently used evaluated this paper,...
Robust and reliable drivetrain is important for preventing electromechanical (e.g., wind turbine) downtime. In recent years, advanced machine learning (ML) techniques including deep have been introduced to improve fault diagnosis performance systems. However, systems operate in varying working conditions, meaning that the distribution of test data (in target domain) different from training used model training, an ML method may become downgraded practical applications. This paper proposes a...
A custom-designed and well-monitored substation communication network (SCN) can maintain fast reliable information transmission lead to improved operation management of a automation system (SAS). In order achieve this goal, traffic-flow model, including port connection source service model an SCN is developed in paper. Based on the calculation algorithm designed obtain distribution traffic load maximum message delay. verify accuracy proposed method, simplified established laboratory. And...
In this paper, we propose an energy storage capacity optimization (ESCO) method for grid-connected microgrid systems (MSs) considering multiple time scale uncertainty coupling. First, envelope model and a box are, respectively, employed to characterize the stochastic uncertainties forecasting error of renewable (RE) power supply load demand. Based on above two characterization models, balance ability indicator robustness coordination cost are proposed, which used quantitatively analyze MS...
Abstract To mitigate subsequent commutation failure (SCF) in line‐commutated converter‐based high‐voltage direct current transmission systems, the response and limitations of control system are analysed. The results reveal that due to prolonged negative deviation extinction angle during recovery, integral output proportional–integral controller constant (CEA) significantly reduces advanced firing order, even below normal operating angle. This directly leads a delayed transition between...
An improved buck-boost + LLC (IBB LLC) cascaded converter appropriate for wide input voltage situation is presented in this paper, which can be used as a constant source or current charger battery. The control strategy of dual frequency PWM (DFPWM) introduced. For the converter, ZVS MOSFETs and ZCS diode are achieved. As result, switching loss reduced operate at higher with high efficiency. operation principle characteristics verified on 200V-450V 14V/80A output experimental prototype.
The further deployment of silicon-based anode materials is hindered by their poor rate and cycling abilities due to the inferior electrical conductivity large volumetric changes. Herein, we report a silicon/carbon nanotube (Si/CNT) composite made an externally grown flexible carbon (CNT) network confine inner multiple Silicon (Si) nanoparticles (Si NPs). in situ generated outer CNTs networks, not only accommodate volume changes inside Si NPs but also provide fast electronic/ionic diffusion...
In the multi-infeed LCC-HVDC system, concurrent commutation failure (CCF) caused by AC fault of receiving-end system may lead to blocking multiple converter stations, which challenges power grid security and stability. This paper proposes a novel method quickly accurately identify CF risk areas, considering probability (CFP) during single-line-to-ground (SLG) fault. First, an AC-DC voltage asymmetry factor (ADVAF) its theoretical derivation are proposed quantify influence position on CF....
This paper presents a novel commutation failure (CF) assessment method considering the influences of voltage magnitude drop, phase shift, and spatial-temporal discreteness AC system faults. The commutating voltage-time area is employed to analyze faults causing CF in high-voltage direct current systems, fault position time on are revealed. Based this, criterion proposed, further influence shift discreteness. Then this research develops new method, which does not rely electromagnetic...