A5074583271- Power System Reliability and Maintenance
- Smart Grid Energy Management
- Optimal Power Flow Distribution
- Microgrid Control and Optimization
- Power System Optimization and Stability
- Power Systems and Renewable Energy
- Smart Grid and Power Systems
- Advanced Battery Technologies Research
- Electric Power System Optimization
- HVDC Systems and Fault Protection
- Electric Vehicles and Infrastructure
- Dark Matter and Cosmic Phenomena
- Optical Network Technologies
- Energy Load and Power Forecasting
- Astrophysics and Cosmic Phenomena
- Integrated Energy Systems Optimization
- Advanced Photonic Communication Systems
- Power Systems and Technologies
- High-Voltage Power Transmission Systems
- Smart Grid Security and Resilience
- Reliability and Maintenance Optimization
- Transportation Planning and Optimization
- RNA Research and Splicing
- Solar and Space Plasma Dynamics
- Power Systems Fault Detection
Tsinghua University
2016-2025
Trinity University of Asia
2025
Thermal Power Research Institute
2024-2025
Shandong Institute of Advanced Technology
2020-2025
Nanjing University of Aeronautics and Astronautics
2025
Tsinghua Sichuan Energy Internet Research Institute
2025
Zigong First People's Hospital
2024
Hohai University
2023-2024
Nanjing University of Information Science and Technology
2024
Yuhuangding Hospital
2024
A precise measurement of the proton flux in primary cosmic rays with rigidity (momentum/charge) from 1 GV to 1.8 TV is presented based on 300 million events. Knowledge dependence important understanding origin, acceleration, and propagation rays. We present detailed variation spectral index for first time. The progressively hardens at high rigidities.Received 6 March 2015DOI:https://doi.org/10.1103/PhysRevLett.114.171103This article available under terms Creative Commons Attribution 3.0...
Measurements of the positron fraction in high energy cosmic rays using space-borne Alpha Magnetic Spectrometer have been extended to energies 500 GeV. The new results show that stops increasing with at around 200
Precision measurements by the Alpha Magnetic Spectrometer on International Space Station of primary cosmic-ray electron flux in range 0.5 to 700 GeV and positron 500 are presented. The each require a description beyond single power-law spectrum. Both change their behavior at ∼30 but fluxes significantly different magnitude energy dependence. Between 20 200 spectral index is harder than index. determination differing indices versus new observation provides important information origins...
Knowledge of the precise rigidity dependence helium flux is important in understanding origin, acceleration, and propagation cosmic rays. A measurement primary rays with (momentum/charge) from 1.9 GV to 3 TV based on 50 million events presented compared proton flux. The detailed variation spectral index for first time. progressively hardens at rigidities larger than 100 GV. similar that though magnitudes are different. Remarkably, ratio increases up 45 then becomes constant; above well...
A precision measurement by AMS of the antiproton flux and antiproton-to-proton ratio in primary cosmic rays absolute rigidity range from 1 to 450 GV is presented based on 3.49×10^{5} events 2.42×10^{9} proton events. The fluxes ratios charged elementary particles are also presented. In ∼60 ∼500 GV, p[over ¯], p, positron e^{+} found have nearly identical dependence electron e^{-} exhibits a different dependence. Below 60 (p[over ¯]/p), ¯]/e^{+}), (p/e^{+}) each reaches maximum. From show no...
The Alpha Magnetic Spectrometer (AMS) is a precision particle physics detector on the International Space Station (ISS) conducting unique, long-duration mission of fundamental research in space. objectives include precise studies origin dark matter, antimatter, and cosmic rays as well exploration new phenomena. Following 16-year period construction testing, precursor flight Shuttle, AMS was installed ISS May 19, 2011. In this report we present results based 120 billion charged ray events up...
We report the observation of new properties primary cosmic rays He, C, and O measured in rigidity (momentum/charge) range 2 GV to 3 TV with 90×10^{6} helium, 8.4×10^{6} carbon, 7.0×10^{6} oxygen nuclei collected by Alpha Magnetic Spectrometer (AMS) during first five years operation. Above 60 GV, these three spectra have identical dependence. They all deviate from a single power law above 200 harden an way.
We present a measurement of the cosmic ray (e^{+}+e^{-}) flux in range 0.5 GeV to 1 TeV based on analysis 10.6 million events collected by AMS. The statistics and resolution AMS provide precision flux. is smooth reveals new distinct information. Above 30.2 GeV, can be described single power law with spectral index γ=-3.170±0.008(stat+syst)±0.008(energy scale).
Precision measurements of cosmic ray positrons are presented up to 1 TeV based on 1.9 million collected by the Alpha Magnetic Spectrometer International Space Station. The positron flux exhibits complex energy dependence. Its distinctive properties (a) a significant excess starting from 25.2±1.8 GeV compared lower-energy, power-law trend, (b) sharp dropoff above 284+91−64 GeV, (c) in entire range is well described sum term associated with produced collision rays, which dominates at low...
The existence of wind power forecast errors is one the most challenging issues for system operation. It difficult to find a reasonable method representation and apply it in scheduling. In this paper, probability distribution model named "versatile distribution" formulated developed along with its properties applications. can well represent all timescales magnitudes. incorporation economic dispatch (ED) problems simplify wind-induced uncertainties via few analytical terms problem formulation....
We report on the observation of new properties secondary cosmic rays Li, Be, and B measured in rigidity (momentum per unit charge) range 1.9 GV to 3.3 TV with a total 5.4×10^{6} nuclei collected by AMS during first five years operation aboard International Space Station. The Li fluxes have an identical dependence above 7 all three 30 Li/Be flux ratio 2.0±0.1. deviate from single power law 200 way. This behavior has also been observed measurement primary He, C, O but dependences are...
Precision results on cosmic-ray electrons are presented in the energy range from 0.5 GeV to 1.4 TeV based $28.1\ifmmode\times\else\texttimes\fi{}{10}^{6}$ collected by Alpha Magnetic Spectrometer International Space Station. In entire electron and positron spectra have distinctly different magnitudes dependences. The flux exhibits a significant excess starting $42.{1}_{\ensuremath{-}5.2}^{+5.4}\text{ }\text{ }\mathrm{GeV}$ compared lower trends, but nature of this is above...
Distributed solar generation has the potential to reach high penetration levels in distribution systems. However, its integration reshapes system power flows and causes rapid-fluctuations statuses. The facts challenge major voltage management approaches, nowadays, such as using online load tap changing (OLTC) transformers, regulators (VRs), or shunt capacitors. In this paper, we explore capability of vehicle-to-grid (V2G) electric vehicles (EVs) join management, collaborate with OLTCs...
This paper presents a distribution locational marginal pricing (DLMP) method through chance constrained mixed-integer programming (MIP) designed to alleviate the possible congestion in future network with high penetration of electric vehicles (EVs). In order represent stochastic characteristics EV driving patterns, optimization charging is proposed and formulated MIP. With constraints formulations, it guarantees that failure probability plan fulfilling requirement below predetermined...
Wide-area power system stabilizer (WPSS) is one of the most potentially effective approaches to damp interarea low frequency oscillations in systems. When WPSS implemented a real project, emphasis should be put on feedback signal delay problem. In order intensively study phasor measurement unit data, field tests have been carried out Guizhou grid (GZPG), and results show that, long-term, might change remarkably under some circumstances, such as when route switches or communication load...
This paper presents an optimal reconfiguration-based dynamic tariff (DT) method for congestion management and line loss reduction in distribution networks with high penetration of electric vehicles. In the proposed DT concept, feeder reconfiguration (FR) is employed through mixed integer programming when calculating DT, leading to minimized energy cost reduced as compared concept without FR. further demonstrates that losses can be taken into account during calculation DT. As a result,...
This paper aims to study the measurement and modeling methods for delays in wide-area closed-loop control systems (WACS). The are classified into communication operational based on information flow of WACS. For delays, an affine evaluation model is proposed previous studies, this verified by measured Guizhou Power Grid Southwest China. a real-time digital simulator (RTDS) hardware-in-the-loop method developed, obtained analyzed. Finally, estimation delay actual WACS proposed, which uplink...
We report the observation of new properties primary iron (Fe) cosmic rays in rigidity range 2.65 GV to 3.0 TV with 0.62×106 nuclei collected by Alpha Magnetic Spectrometer experiment on International Space Station. Above 80.5 dependence ray Fe flux is identical He, C, and O fluxes, Fe/O ratio being constant at 0.155±0.006. This shows that unexpectedly belong same class which different from Ne, Mg, Si class.Received 2 October 2020Revised 22 November 2020Accepted 9 December...