A5065137955- High-Voltage Power Transmission Systems
- HVDC Systems and Fault Protection
- Tropical and Extratropical Cyclones Research
- Wind and Air Flow Studies
- Ocean Waves and Remote Sensing
- Climate variability and models
- Silicon Carbide Semiconductor Technologies
- High voltage insulation and dielectric phenomena
- Superconducting Materials and Applications
- Power Systems and Renewable Energy
- Wind Energy Research and Development
- Real-time simulation and control systems
- Vibration and Dynamic Analysis
- Meteorological Phenomena and Simulations
- Smart Grid and Power Systems
- Aerosol Filtration and Electrostatic Precipitation
- Lightning and Electromagnetic Phenomena
- Advancements in Semiconductor Devices and Circuit Design
- Electromagnetic Compatibility and Noise Suppression
- Superconductivity in MgB2 and Alloys
- Electrical Fault Detection and Protection
- Power System Reliability and Maintenance
- Seismic Performance and Analysis
- Magnetic Bearings and Levitation Dynamics
- Coastal and Marine Dynamics
China Southern Power Grid (China)
2012-2025
Western University
2019-2024
Actua
2024
China Academy of Space Technology
2023
Tianjin University of Technology and Education
2013
This paper studies the structural responses and failure modes of a 1.5-MW horizontal-axis wind turbine under strong ground motions loading. Ground were selected scaled to match two design response spectra given by seismic code, loads generated considering tropical cyclone scenarios. Nonlinear dynamic time-history analyses conducted performances as well short- long-period compared. The results show that collapse tower is driven formation plastic hinge at lower section tower. area also...
There are many disadvantages in the conventional method of limiting short-circuit flexible HVdc transmission system such as a series-connecting electric reactor on dc side. This paper presents current for adding resistive-type superconducting fault limiter. Considering flexibility various operating conditions and characteristics, well performance requirements to limiter, scheme 160-kV/1-kA limiter was designed, topology main parameters were proposed. According mutual restriction relationship...
Abstract The ice accretion load in Canadian structural design codes is developed based on an operational prediction model. In the present study, three models are employed to predict amount a flat surface and horizontal wire at sites. results confirm that model used by practice for predicting leads conservative estimate as compared remaining two models. also indicate use of Gumbel distribution annual maximum adequate regions prone lognormal may be considered with moderate or negligible...
ABSTRACT Switching transient processes of silicon carbide (SiC) devices induce several challenges, such as voltage and current overshoots, switching losses, , electromagnetic interference (EMI), threatening the safe efficient operation power electronic systems. Characterization SiC modules is crucial to address these issues. This paper characterizes dynamic EMI performance a state‐of‐the‐art all‐SiC module with Easy‐2B package from Fuji Electric. Using double pulse test (DPT) platform,...
This study, based on typhoon data provided by the China Meteorological Administration and focusing critical issue of disaster warning defense, thoroughly examines two core components: classification intelligent prediction paths. An innovative evaluation system that integrates time series clustering with hierarchical is developed to standardize various indicators accurately capture characteristics different categories. Furthermore, combination a three-dimensional convolutional neural network...
The use of wind energy resources is developing rapidly in recent decades. There an increasing number farms high wind-velocity areas such as the Pacific Rim regions. Wind turbine towers are vulnerable to tropical cyclones and tower failures have been reported these Existing post-disaster failure case studies were mostly performed through forensic investigations there few numerical that address collapse mode simulation under strong loads. In this paper, wind-induced analysis a conventional 65m...
DC Superconducting fault current limiter (SFCL) can be used to reduce the of voltage source converter-based high-voltage direct (VSC-HVdc) transmission systems, thereby significantly reducing manufacturing difficulty and cost dc circuit breakers. The authors aim develop a 160-kV/1-kA resistive type SFCL, apply it in VSC-HVdc system Nan'ao China. In order verify feasibility research is divided into two stages, results first stage are presented. rated developed SFCL 160 kV 1 kA, respectively,...
Abstract High voltage direct current (HVDC) transmission technology has begun to play a great role in power industry over the last decade. However, short-circuit fault seriously threatens safety of an HVDC network. In order reduce level network, utilizing superconducting limiter (SFCL) was proposed by researchers and engineers worldwide. Recently, Guangdong Grid Company China Southern Power Grid, Co. led project develop 160 kV/1 kA resistive type DC SFCL. As middle-step objective, laboratory...
The use of a resistive-type superconducting fault current limiter (R-SFCL) in the nanao modular multilevel converter based multiterminal high-voltage direct transmission project (MMC–MTdc) is first its kind over world. There were no relevant development and operational experience to support construction this project. In response difficulties implementation, corresponding methods straightened out article. These contributions include 1) proposal an iterative optimization calculation method for...
Engineering type tropical cyclone (TC) wind field models are used to estimate TC hazard. Some of the models are well-calibrated using observation data, while others not extensively compared and verified. They all proxies the real fields. The computational effort for their use differs. In present study, a comparison predicted fields is presented by considering three commonly models: gradient model, slab-resolving linear height-resolving model. These essentially predict horizontal speed at...
The integration of large scale wind farms bring serious influence to the stability power system. In this paper, a simulation model doubly-fed induction generator (DFIG) based turbine with capacity 1.5 MW is constructed using module parameter identification in software DIgSILENT. Then, decrease modeling error came from difference between energy utilization factor table DIgSILENT and that actual generator, new modified developed. Finally, DFIG-based model, corresponding identified parameters,...
Used Atmega 8 microcontroller as the control center, with temperature sensor DS18B20, feeding system, combined radio frequency technology, intelligent system for fish-farming was designed. The has whole process of automatic and testing feeding, supplemental oxygen, PID regulation; PC host processor connect each other through RS-485 to greatly improve transmission distance, using CRC cyclic redundancy check code ensure accuracy data. machine is mainly responsible collecting spot parameters...
Artificial instantaneous grounding test of DC overhead lines is a key step to verify the high-speed circuit breakers' rapid breaking performance and control protection strategies VSC-HVDC. This paper introduced artificial method first mechanical HVDC breaker in CSG, PSCAD software was used simulate parameters such as current LC oscillation breaker. The field tests simulation comparison show that arc extinguishing fracture delays 3.5ms after receiving action, cut-off 1370A, arrester did not...
Abstract The current-limiting performance of the dc resistive-type superconducting fault current limiter (dc R-SFCL) is vital to reliability in high voltage (HVDC) transmission system. It expensive and difficult utilize discharging process precharged capacitor evaluate performance. In this paper, a R-Q curve based evaluation method for R-SFCLs system proposed, which replaces impulse experiment with ac experiment. A ± 160kV SFCL prototype designed by Guangdong Power Grid Co., Ltd., tested...