A5101810424- HVDC Systems and Fault Protection
- High-Voltage Power Transmission Systems
- Microgrid Control and Optimization
- Real-time simulation and control systems
- Power System Reliability and Maintenance
- Advanced Battery Technologies Research
- Geological and Geochemical Analysis
- Thermochemical Biomass Conversion Processes
- Power System Optimization and Stability
- Nanomaterials for catalytic reactions
- Energy Load and Power Forecasting
- Coal and Its By-products
- Metal-Organic Frameworks: Synthesis and Applications
- Simulation Techniques and Applications
- Thermal and Kinetic Analysis
- Fuel Cells and Related Materials
- Optimal Power Flow Distribution
- Biodiesel Production and Applications
- Advanced DC-DC Converters
- Soil, Finite Element Methods
- Nanocluster Synthesis and Applications
- Matrix Theory and Algorithms
- Heavy metals in environment
- Smart Grid Energy Management
- Mercury impact and mitigation studies
Guizhou University
2021
Tsinghua University
2016-2020
University of Science and Technology of China
2019
National Synchrotron Radiation Laboratory
2019
Southwest Jiaotong University
2018
University of Chinese Academy of Sciences
2014-2016
Chinese Academy of Sciences
2014-2016
Beijing National Laboratory for Molecular Sciences
2016
Institute of Chemistry
2016
Institute of Geochemistry
2014
This paper presents a comprehensive optimization control scheme to improve efficiency and dynamic response of dual-active-bridge (DAB) dc-dc converters. Unified-phase-shift (UPS) is widely used increase the DAB converters by minimizing peak current, but performance needs be further enhanced. In this paper, gain superior converters, an equivalent power-balancing (PB) model employed, which capable predicting behavior converter output voltages due input voltage fluctuation load disturbance. And...
Abstract Encapsulation of surfactant‐free Pd nanoparticles (NPs) in the metal–organic framework material ZIF‐8 hollow nanospheres was achieved. Pd@ZIF‐8 showed excellent size‐selective catalytic properties liquid‐phase hydrogenation olefins. As a result uniform pore size shell (apertures 3.4 Å), catalyst high activity for 1‐hexene (1.9×8.2 Å) but very low larger molecules such as cis ‐cyclooctene (5.3×5.5 trans ‐stilbene (4.2×11.3 and triphenylethylene (9.1×9.2 Å). Other noble‐metal could...
It becomes necessary to utilize electromagnetic/ electromechanical hybrid simulator modern large HVAC and DC power system, where multiple HVDC links feed into concentrated load areas. In this paper, a practical real-time is proposed. The makes RTDS external transient program running on computer link together effectively smoothly. entire interface schemes for simulation are discussed both algorithm implementation layers. Aiming at the problem unexpected low frequency non-characteristic...
Modular multilevel converters (MMCs) play a critical role in the future energy Internet pattern. Therefore, proper models for simulation of complex systems with multiple MMCs are required. This study proposes simplified equivalent model (SEM) based on implicit trapezoidal method and Thevenin equivalent. The can accurately simulate arm voltages MMC is thus capable simulating system‐level transients after faults disturbances, circulating currents subsynchronous oscillation components....
Abstract The configuration and optimization of energy storage capacity on the user side power grid are currently active research areas in system. This article presents a method that utilizes an enhanced Grey Wolf algorithm to address issues configuring optimizing side. is improved by incorporating differential evolution calculating fitness value. Based this, objective function for model user-side established, considering uncertainty parameters as set achieve robust optimization. design...
In the electromagnetic transient (EMT) and stability (TS) hybrid simulation, entire power system is artificially split into two sub-grids, sub-grids interact with each other via an interface. Thus interface distortions emerge, including latency errors. The influence of quantitated based on a demo circuit containing delayed interaction. Moreover, principles improving simulation accuracy are concluded. Inspired by principles, novel displacement (ID) dynamic phasor mapping equivalence (DP-ME)...
Efficient transient simulation of large power grid is great importance for system operation and dispatching, fault repetition, operator training etc. Online stability estimation testing on control protection require hard real‐time performance simulation. The conventional simulation, which splits an entire into sub‐grids solves them in parallel, lacks generality various case systems. This study proposes a new efficiency enhancement method without partitioning. Three key techniques are...
This paper analyses the mathematical model of regional multi-energy system and brings in Multifrontal Method nested dissection to solve model. The consists linear nonlinear algebraic equations differential equations. latter two kinds can be finally turned into sparse By applying Method, matrix factorized parallel instead serial consuming time reduced. rearrange elements reach a high degree parallelism improve performance Method. Based on 20-vertex 536-vertex which both have similar structure...
The DC transmission, distribution and networking have been applied to medium low voltage power grids, exhibited apparent advantages favorable application perspective. Different from traditional AC grids shown features of inertia, weak damping the inclination oscillation. intermix fast switching transients control dynamics makes grid much more complicated. In addition, fluctuation renewable energy generation demand-response loads imposes difficulties on stable smooth running grid. However, no...