A5025011997- Rock Mechanics and Modeling
- Geoscience and Mining Technology
- Landslides and related hazards
- Geophysical Methods and Applications
- Geomechanics and Mining Engineering
- Coal Properties and Utilization
- Geotechnical and Geomechanical Engineering
- Microgrid Control and Optimization
- Mine drainage and remediation techniques
- Dam Engineering and Safety
- Wind Turbine Control Systems
- Grouting, Rheology, and Soil Mechanics
- Karst Systems and Hydrogeology
- Geotechnical Engineering and Underground Structures
- Geochemistry and Geologic Mapping
- Power System Optimization and Stability
- earthquake and tectonic studies
- Groundwater and Isotope Geochemistry
- Geotechnical Engineering and Analysis
- Groundwater flow and contamination studies
- Power Systems and Technologies
- Power Systems and Renewable Energy
- Metamaterials and Metasurfaces Applications
- Energy Load and Power Forecasting
- Blasting Impact and Analysis
China University of Mining and Technology
2013-2024
Xinjiang University
2021-2023
University of Nebraska–Lincoln
2010-2022
Tongji University
2021
China Coal Technology and Engineering Group Corp (China)
2021
State Key Laboratory of Gas Disaster Detecting, Preventing and Emergency Controlling
2014-2020
Guilin University of Electronic Technology
2016-2017
Gansu Coalfield Geology Bureau
2012-2013
Yankuang Energy Group Company Limited (China)
2013
Yankton Rural Area Health Education Center
2013
The traditional multicell battery design usually employs a fixed configuration to connect multiple cells in series and parallel during operation order achieve the required voltage current. However, this results low reliability, fault tolerance, nonoptimal energy conversion efficiency. This paper proposes novel power electronics-enabled self-X, design. proposed can automatically configure itself according dynamic load/storage demand condition of each cell. self-heal from failure or abnormal...
We present a broadband tunable polarization converter in terahertz (THz) frequency based on hybrid metamaterial comprising I-shaped metallic resonators and double layer graphene sheets. The proposed device can dynamically switch its functionalities among linear-to-linear, linear-to-circular, linear-to-elliptical conversion by electrically controlling the Fermi energy of sheets without reoptimizing refabricating structures. This concept offers further step developing polarizers switchers has...
Wind power is one of the most rapidly growing clean and renewable energy sources. However, due to uncertainty intermittency wind power, increasing penetration into electric system will pose challenges operators. Moreover, as a participant in competitive electricity market, producer's behavior profit be influenced by other participants' behaviors. This paper proposes model using stochastic programming generate optimal bidding strategies maximize total profits conventional producers both...
When subjected to transient disturbances in the power grid, variable frequency converter (VFC) is most sensitive part variable-speed wind turbine generator system (WTGS) equipped with a doubly fed induction (DFIG). The VFC normally controlled by set of PI controllers. Tuning these controllers tedious work and it difficult tune gains optimally due nonlinearity high complexity system. This paper presents an approach use particle swarm optimization algorithm design optimal for rotor-side DFIG....
In the process of using original key stratum theory to predict height a water-flowing fractured zone (WFZ), influence rock strata outside calculation range on within as well fact that shape overburden deformation area will change with excavation length are ignored. this paper, an improved (IKS theory) was proposed by fixing these two shortcomings. Then, WFZ prediction method based IKS established and applied. First, involved in analysis determined according tensile stress distribution above...
Abstract The assessment of Coal burst risk (CBR) is the premise bump disaster prevention and control. It implementation criterion to guide various rock control measures. existing static prediction evaluation methods for CBR cannot be effectively combined with results underground dynamic monitoring. This study proposed a mining-induced seismicity information quantification method based on fractal theory. Deep learning were used construct deep framework coal (DLFR) dimension microseismic...
In some power systems, the penetration of wind is increasing rapidly and starts to influence overall system behavior stability. Under this condition, it becomes necessary require turbine generators (WTGs) remain in service during grid faults support network voltage frequency. This paper investigates effect grid-connected turbines driving doubly-fed induction (DFIGs) on transient stability systems. By using an uninterrupted operation scheme fast control DFIG converters, can successfully ride...
Wind energy systems (WESs) are usually equipped with mechanical sensors to measure wind speed, rotor shaft and generator position/speed for system monitoring, control, protection. The use of these increases cost, size, weight, hardware wiring complexity reduces reliability WESs. problems incurred in using can be solved through sensorless control. This paper presents the principles maximum power point tracking (MPPT) control WESs based on an overview existing work subject. Several intelligent...
The magnitude and direction of the in-situ stress field significantly influence Geodynamic disaster. Taking Gaojiapu Coal Mine in northwest Binchang mining area as study area, distribution law its relationship with microseismic events were analyzed discussed through geological investigation, measurement, numerical simulation. results show that: (1) Maximum horizontal principal (MaxHPS) is mainly concentrated turning end fold, axis syncline, undulation anticline, footwall fault, two ends...
Abstract In order to explore the influence of weak interlayer on blasting characteristics in natural rock mass, by using particle flow code (PFC 2D ), a single hole numerical model hard with soft is established. The experiments at different positions and thicknesses are carried out. Then an in-depth analysis from perspectives crack effect, stress field energy made. Results showed that: (i) When explosion initiated outside interlayer, if located within about twice radius crushing area, closer...
The new Shanghai No. 1 Coal Mine is located in arid and semiarid area of northwest China, which characterized by scarce rainfall, intense evaporation, limited water resources. High-intensity coal mining has caused severe damage to groundwater Baotashan sandstone aquifer the Jurassic system abundant resources, they are stored floor strata seams. This poses risk high-pressure build-up inrush hazards during coal. To avoid these, needs be drained depressurized, can result a huge waste Thus,...
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