A5069415541- HVDC Systems and Fault Protection
- Physics of Superconductivity and Magnetism
- Superconducting Materials and Applications
- Frequency Control in Power Systems
- High-Voltage Power Transmission Systems
- Earthquake Detection and Analysis
- Molecular Sensors and Ion Detection
- Semiconductor Quantum Structures and Devices
- Microwave Engineering and Waveguides
- Radio Frequency Integrated Circuit Design
- Seismology and Earthquake Studies
- earthquake and tectonic studies
- Quantum Dots Synthesis And Properties
- Advanced Power Amplifier Design
- Click Chemistry and Applications
- Seismic Waves and Analysis
- Electrical Fault Detection and Protection
- Particle Detector Development and Performance
- Nanoplatforms for cancer theranostics
- Yersinia bacterium, plague, ectoparasites research
- Particle Accelerators and Free-Electron Lasers
- Power Systems Fault Detection
- Particle accelerators and beam dynamics
- Microwave Dielectric Ceramics Synthesis
- Atomic and Subatomic Physics Research
Chinese Academy of Sciences
2010-2024
China Earthquake Administration
2023-2024
South China University of Technology
2023-2024
Institute of Electrical Engineering
2010-2023
National Laboratory for Superconductivity
2020-2023
Zhongshan Hospital
2023
Fudan University
2014-2023
East China Normal University
2020
Beijing Jiaotong University
2020
Beijing Haidian Hospital
2019
A theranostic probe is designed that specifically illuminates and photoablates cancer cells by sensing pH changes in the lysosomes mitochondria.
Fluorescent probes have emerged as an essential tool in the molecular recognition events biological systems; however, due to complex structures of certain biomolecules, it remains a challenge design small-molecule fluorescent with high sensitivity and selectivity. Inspired by enzyme-catalyzed reaction between biomolecule probe, we present novel combination-reaction two-step sensing strategy improve Based on this strategy, successfully prepared turn-on reduced nicotinamide adenine...
We develop an electric internal heating method based on a Ni-foam structured catalyst for CO<sub>2</sub> methanation, in which the Joule heat generated by current passing through drives reaction.
The growing environmental pressure resulting from the use of fossil fuels is leading mankind to make a transition traditional energy sources that renewable based clean energy. Because has feature instability, it thus brings significant challenges on real-time power balance and dispatching. Therefore, secure supply, grid needs be upgraded by selection reasonable structure operation mode. In this paper, multiple-level direct current (dc) loop grid, which would suitable mode for future...
Metastasis accounts for the vast majority of cancer deaths. To minimize metastasis-associated mortality, it is crucially important to evaluate metastatic potential (M.P.), that is, defined as a tendency primary tumor colonize distant organ. Dysregulated pH in solid tumors, especially acidification extracellular (pHe ) promotes dormant metastasis by driving protease-mediated digestion, disrupting cell-matrix interaction and increasing migration cells. Therefore, imaging intratumoral acidosis...
In this article, a general scheme of 40-kV/2-kA resistive type dc superconducting fault current limiter (SFCL) is suggested, which could be utilized to suppress the surge caused by short-circuit faults in voltage-source-converter HVdc (VSC-HVdc) power grids. This SFCL designed and fabricated with 6 coil modules parallel 4 series. order investigate current-limiting performance under rapidly rising current, tested on platform pulsed impact generator. Besides property limitation, capacity,...
A superconducting magnetic energy storage system (SMES), with stored of 1 MJ and compensation power 0.5 MVA, has been developed successfully, now is operating at the world's first substation Baiyin National High-Tech Industrial Development Zone, Gansu Province, China. The SMES employs a high Tc magnet, which consists 44 pancakes, operates 4.2 K in liquid helium, cooled down by 4 G-M cryo-coolers. connects to 10.5 kV grid use conversion system. Since 16 February, 2011, reliably, providing...
Performance of triple GEM prototypes in strong magnetic field has been evaluated by means a muon beam at the H4 line SPS test area CERN. Data have reconstructed and analyzed offline with two reconstruction methods: charge centroid micro-Time-Projection-Chamber exploiting time measurement respectively. Depending on combination particle incident angle filed, there's always one algorithms achieving spatial resolution 100–120 μm.
A superconducting fault current limiter-magnetic energy storage (SFCL-MES) system for substation applications is proposed. SFCL-MES can limit not only the peak current, but also steady current. Moreover, it provide high-quality power critical customers of at same time. 100 kJ/1000 A/20 kVA prototype developed, and mainly consists a NbTi magnet with two coaxial homocentric solenoids reducing stray field, three-half-bridge converter regulator. The principle analysed, design experiment results...
This paper presents the worldwide developments of superconducting magnetic energy storage (SMES) devices. The application solutions SMES technology for future smart grids are further discussed. topologies and advantages micro grids, transmission distribution systems briefly described. scheme hybrid (ESSs) distributed (D-SMES) devices proposed discussed to combine from small-scale other conventional ESSs, achieve better performance in practical power applications. Finally, integrated...
An HTS magnet was designed and fabricated for the 1 MJ/0.5 MVA SMES. It consists of 44 double pancakes with an inductance 6.28 H, rated operating current is 565 A. In this paper, electromagnetic analysis structural design are presented. Because strong anisotropy Bi2223/Ag tape, field distribution can seriously affect performances magnet. Its magnetic analysed by means finite element method (FEM). Similarly, critical <formula formulatype="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML"...
New developments of the wind power technologies open a wide future in next decade. One such is novel high temperature superconducting (HTS) generators using turbine, which can greatly enhance output stability while sharply cut down volume and weight. A 100 kW model generator proposed racetrack excitation coil for it designed tested considering against current pulses. The magnetic field distribution numerically evaluated measured via BSCCO practice liquid Nitrogen. electromagnetic design...
An HTS magnet was designed for the 1 MJ/0.5 MVA SMES with Bi2223/Ag tapes. According to design, it consists of 44 double pancakes an inductance 6.28 H, and rated operating current is 565 A, maximum magnetic field up 5.72 T. In this paper, insulation tapes magnet, fabrication tests pancakes, joints among assemblage are described in detail. And then, fundamental performances testing were carried out at liquid nitrogen helium, respectively. With zero helium vaporization, MJ dip cooled four G-M...
Numerous scholars have used traditional thermal anomaly extraction methods and time series prediction models to study seismic anomalies based on longwave infrared radiation data. This paper selected bidirectional long short-term memory (BILSTM) as the research algorithm after analyzing comparing performance of five models. Based outgoing (OLR) data, model was predict values in spatial area 5° × at epicenter for 30 days before earthquake. The confidence interval evaluation criterion extract...
We developed a 35kV/90MVA Superconducting Fault Current Limiter (SFCL) and installed it in transmission network at Puji substation of China Southern Power Grid the end 2007. A 72 hour period trial operation was conducted before SFCL commissioned into grid. This device demonstrated having very low impedance normal power no adverse effect on network. To fully examine its current limiting capacity, tests were under artificially imposed short-circuit conditions July 20, 2009. series five...
Abstract A Rogowski coil based sensor for current measurement in a cryogenic environment and results of its application paralleled high temperature superconducting (HTS) sharing are presented. The consists an integrator, where the output voltage is proportional to derivative primary integrator transfers differentiation normal state. has promising applicability at circumstance because body made low materials. ensures large bandwidth with feasible magnitude, which vital dynamic during quench...