A5038419693- HVDC Systems and Fault Protection
- High-Voltage Power Transmission Systems
- Power Systems Fault Detection
- Conducting polymers and applications
- Perovskite Materials and Applications
- Microgrid Control and Optimization
- Islanding Detection in Power Systems
- Silicon Carbide Semiconductor Technologies
- Electrical Fault Detection and Protection
- Lightning and Electromagnetic Phenomena
- Cardiac Structural Anomalies and Repair
- Ga2O3 and related materials
- Thermal Analysis in Power Transmission
- Multilevel Inverters and Converters
- ZnO doping and properties
- High voltage insulation and dielectric phenomena
- Organic Light-Emitting Diodes Research
- Power Systems and Technologies
- Superconducting Materials and Applications
- Wind Turbine Control Systems
- Advanced DC-DC Converters
- Smart Grid and Power Systems
- Advanced Photocatalysis Techniques
- Frequency Control in Power Systems
- Electric Power System Optimization
Tianjin University
2016-2025
North China Electric Power University
2023-2025
Qinghai University
2024
Chinese Academy of Sciences
2022-2024
Chengdu Medical College
2024
Suzhou Institute of Nano-tech and Nano-bionics
2023-2024
University of Science and Technology of China
2023
China University of Geosciences (Beijing)
2020-2022
Ministry of Education of the People's Republic of China
2022
Harbin Institute of Technology
2022
Protein-protein and protein-DNA/RNA interactions play a fundamental role in variety of biological processes. Determining the complex structures these is valuable, which molecular docking has played an important role. To automatically make use binding information from PDB docking, here we have presented HDOCK, novel web server our hybrid algorithm template-based modeling free cases with misleading templates can be rescued by protocol. The supports protein-protein accepts both sequence...
Abstract This paper addresses the challenge of maximizing power capture from new energy sources, including coal, wind, solar, and hydroelectric power, which often lack sufficient inertia support. deficiency can lead to frequency instability cascading failures within system. A cooperative optimization model for start‐up multiple supplies, designed enhance integration sources while maintaining system stability is proposed. The incorporates primary modulation intrinsic support capabilities...
Abstract Electric vehicles (EVs) and small photovoltaic (PV) installations advance residential power grids by lowering charging costs fostering eco‐friendly operations. Yet, the variable nature of EV presents challenges to grid reliability. This research introduces a Monte Carlo‐based simulation for predicting loads systematic method that integrates ‘green electricity’ pricing scheme with joint optimization model PV management. By applying an improved ant lion optimizer (IALO) algorithm...
In perovskite solar cells (PSCs), defects in the interface and mismatched energy levels can damage device performance. Improving quality is an effective way to achieve efficient stable PSCs. this work, a multifunctional dye molecule, named ThPCyAc, was designed synthesized be introduced perovskite/HTM interface. On one hand, various functional groups on acceptor unit act as Lewis base reduce defect density suppress nonradiative combinations. other stepwise energy-level alignment caused by...
High-performance <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\beta $ </tex-math></inline-formula> -Ga2O3 U-shaped trench-gate metal-oxide-semiconductor field-effect transistor (UMOSFET) has been demonstrated. Nitrogen ions implantation was employed to form current blocking layer. Electrons in the layer can accumulate area near groove and a conductive channel promote generation at positive gate bias....
In this study, we fabricated superb β-Ga <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> O xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> Schottky barrier diodes (SBDs) with high breakdown voltage ( <italic xmlns:xlink="http://www.w3.org/1999/xlink">V</i> xmlns:xlink="http://www.w3.org/1999/xlink">br</sub> ) and low leakage through combining platinum oxide (PtO xmlns:xlink="http://www.w3.org/1999/xlink">x</sub> anodic self-aligned...
Dopant-free hole transporting materials (HTMs) is significant to the stability of perovskite solar cells (PSCs). Here, we developed a novel star-shape arylamine HTM, termed Py-DB, with pyrene core and carbon-carbon double bonds as bridge units. Compared reference HTM (termed Py-C), extension planar conjugation backbone endows Py-DB typical intermolecular π-π stacking interactions excellent solubility, resulting in improved mobility film morphology. In addition, lower HOMO energy level...
High-voltage direct-current (HVDC) transmission line protection is essential to the safety and reliability of modern power system with wide application HVDC technologies. Based on characteristics specific frequency current (SFC) dc filter, a novel pilot scheme for lines proposed in this paper. According harmonic equivalent circuit control strategy system, SFC filter are theoretically analyzed internal external faults fault steady period. In addition, these used construct backup identify...
Given the importance of peptide-mediated protein interactions in cellular processes, protein–peptide docking has received increasing attention. Here, we have developed a Hierarchical flexible Peptide Docking approach through fast generation and ensemble peptide conformations, which is referred to as HPepDock. Tested on LEADS-PEP benchmark data set 53 diverse complexes with peptides 3–12 residues, HPepDock performed significantly better than 11 protocols five small-molecule programs (DOCK,...
For droop control in voltage source converter based multi-terminal HVDC systems, the determination of coefficients is a key issue, which directly affects both power distribution and DC performances. This paper proposes novel design considering requirements distribution, system stability. Considering margins different converters, ratio relationship among established. Converters with larger take bigger portion mismatch to avoid overload problem. Furthermore, integral square error converters...
Fast and reliable direction criterion is important for the protection of multi-terminal HVDC grid, not only pilot protection, but also excluding backward fault in singleended protection. The criteria based on dc current variation (Δi) or change rate (di/dt) have been used transmission system. However, acting reliability influenced by high-transition resistance, line distributed capacitance, so on. Although boundary effect reactor excellent operation performance they are feasibility when...
Abstract Given the “carbon neutralization and carbon peak” policy, enhancing low voltage ride-through (LVRT) capability of wind farms has become a current demand to ensure safe stable operation power systems in context possible severe threat large-scale disconnection caused by farms. Currently, research on LVRT mainly focuses suppressing rotor providing reactive support, while impact active output performance not been thoroughly discussed. This paper studies reveals relationship between...
The twisted spiro-type SAM 4PA-spiro effectively suppresses molecular aggregation and ensures appropriate energy levels, providing an efficiency of 25.28 21.87% for the p–i–n PSCs (0.05 cm 2 ) modules (29.0 ).
Abstract Dopant‐free hole transporting materials (HTMs) is significant to the stability of perovskite solar cells (PSCs). Here, we developed a novel star‐shape arylamine HTM, termed Py‐DB, with pyrene core and carbon‐carbon double bonds as bridge units. Compared reference HTM (termed Py‐C), extension planar conjugation backbone endows Py‐DB typical intermolecular π–π stacking interactions excellent solubility, resulting in improved mobility film morphology. In addition, lower HOMO energy...
Medium voltage direct current (MVdc) distribution system has numerous advantages over medium alternative system. However, two shortcomings of the existing hybrid circuit breaker (DCCB) with load switch, including high construction cost and operating losses, have constrained application DCCBs in MVdc To overcome these shortcomings, a novel multi-port DCCB negative source (NVS) been proposed this paper. First, general topology working principle NVS are presented. Then, focused on commutation...
The high-voltage direct-current transmission based on voltage source converter (VSC-HVDC) system has pointed the way for development of smart grid, yet one challenge to be faced is that VSCs are vulnerable dc short-circuit faults due huge discharge current dc-link capacitor. Therefore, saturated iron-core superconductive fault limiter (SI-SFCL) introduced limit a relatively low level. working principle and electrical properties SI-SFCL discussed first. relationship between inductance gird...
In the flexible dc grid, fault propagates extremely fast. It requires protection and circuit breaker (DCCB) can identify isolate line very quickly, for healthy network ride-through, especially in multi-terminal grids. However, existing DCCB techniques grid still not match propagation speed. Therefore, a novel current-commutation-based current limiter (FCL) is proposed this paper. limit effectively, to guarantee converter continuous operation ride-through after faults, so requirement on...
When a short-circuit fault occurs in the VSC-HVDC transmission system, DC-side current increases and voltage decreases rapidly, which can pose serious threat to normal operation of system. In order meet requirements for speed, selectivity, sensitivity, reliability propagating characteristics traveling wave after line are analyzed, then an improved protection principle based on differential considering frequency-dependent parameters is proposed. A data out-of-sync detection method only using...
This paper addresses the issue of enhancing low voltage ride-through (LVRT) capability doubly-fed wind farms during asymmetric faults. research is critical importance for ensuring safe and stable operation power grid sustainable development technology. Given stricter LVRT requirements set by latest national standards in China, existing schemes are insufficient to meet these challenges. first analyzes control performance rotor side converter under fault conditions. Based on standard...
A DC distribution system, which is suitable for access to distributed power generation and loads, one of the development directions in systems. Furthermore, it could greatly improve energy efficiency reduce loss transportation. The huge short circuit current always a great threat safety components, especially capacitors diodes. resistive superconductive fault limiter (SFCL), respond quickly once happens limit relatively low level, becomes good solution this problem. In paper, operational...
The molecular structures of hole‐transporting materials (HTMs) have a significant effect on the performance perovskite solar cells (PSCs). In this work, four small‐molecular HTMs (SFX‐1, SFX‐2, SFX‐3, and SFX‐4) are prepared by regulating substitution sites terminal diphenylamine groups spiro[fluorene‐9,9′‐xanthene] core. As SFX‐1 SFX‐2 well‐documented compounds, article adopts original publication's acronyms, referring to them as SFX‐MeOTAD HTM‐FX′, respectively. It is found that exhibit...