A5104474037- High-Voltage Power Transmission Systems
- High voltage insulation and dielectric phenomena
- Advancements in Solid Oxide Fuel Cells
- Hydraulic Fracturing and Reservoir Analysis
- Lightning and Electromagnetic Phenomena
- Icing and De-icing Technologies
- Power Systems Fault Detection
- Spectroscopy and Quantum Chemical Studies
- Metal Alloys Wear and Properties
- Smart Grid and Power Systems
- HVDC Systems and Fault Protection
- Electronic and Structural Properties of Oxides
- Semiconductor materials and devices
- Ultrasound and Cavitation Phenomena
- Plant Water Relations and Carbon Dynamics
- Advanced Sensor and Control Systems
- Metallurgy and Material Forming
- Microstructure and Mechanical Properties of Steels
- Machine Learning in Materials Science
- Fuel Cells and Related Materials
- Surface and Thin Film Phenomena
- Power Transformer Diagnostics and Insulation
- Advanced Thermodynamics and Statistical Mechanics
- Advanced Chemical Physics Studies
- Quantum Information and Cryptography
North China Electric Power University
2022-2025
Xi'an Jiaotong University
2018-2025
China Electric Power Research Institute
2022-2025
Tianjin University of Technology
2022-2025
Tianjin Research Institute of Electric Science (China)
2025
Shanghai University of Engineering Science
2020-2024
Tibet Autonomous Region People's Hospital
2024
University of Science and Technology of China
2022-2023
Shanghai University
2023
Zhuhai Institute of Advanced Technology
2023
This paper simulates and calculates the electric field distribution characteristics of main fitting surface personnel jumper string in process entering exiting equipotential order to study optimal path . Eight methods for leaving are chosen based on UHV tension tower's construction custom doing so using pendulum method. When operators reached via various paths, dynamic variations strength values large small rings at high voltage end were examined. The maximum strength, average etc,...
Human–machine co-driving refers to a technological architecture in which human driver and automated system control vehicle sharing cooperate accomplish driving tasks. The could solve the safety ethical dilemmas of autonomous vehicles, is an innovative method improve intelligence. To realize high-precision safe path-tracking control, this paper proposes parallel steering human–machine framework based on constraint-following controller weight allocation module. First, established, uses...
Plant water use can have a profound impact on the regional cycle and balance. A great deal of research has been conducted in this area recent years. However, plant nighttime sap flow non-growing season rarely addressed. These two components should not be neglected accurately predicting urban landscape trees large-scale plantation forests. In study, thermal diffusion probe (TDP) method was used to observe Fraxinus pennsylvanica Marshall, common tree species northern China. Continuous...
ABSTRACT The present study finds that the existing line protection struggles to address problem of amplitude‐limited and phase‐controlled fault currents for new energy outgoing lines. paper defines concept equivalent parameter line‐to‐ground admittance proposes a based on parameter. theoretical expressions parameters admittances are analysed various types outside line. reflect capacitance during normal operation or out‐of‐zone faults, with very small amplitude capacitive phase. Conversely,...
In arid and semiarid regions with water shortage, forestry development is limited by availability. Understanding how tree sap flow responds to stress microclimatic variables essential for the management of trees understanding eco-physiological properties in areas. city Tianjin northern China, we measured Fraxinus pennsylvanica, a widely distributed urban greening species China. We four F. pennsylvanica over 6 months (April-September 2021), using thermal diffusion probe method, simultaneously...
We present the quantum dynamics of a spin coupling to bath independent spins via dissipaton equation motion (DEOM) approach. The bath, characterized by continuous spectral density function, is composed that are level systems described su(2) Lie algebra. This represents an extreme class anharmonic environment. Based on conclusion drawn Suarez and Silbey [J. Chem. Phys. 95, 9115 (1991)] Makri 111, 6164 (1999)] can be mapped Gaussian environment under its linear response limit, we derive...
Abstract In view of the increasing energy consumption and power demand, construction UHV AC is growing rapidly, project gradually advancing to higher altitudes. It urgent conduct research on typical gap discharge in substations at high Combined with engineering requirements, this paper corrects test data an altitude 0 m according GB/T 24842 standard through correction combines voltage requirements various gaps obtain minimum air distance 5000 below. The calculation results two methods are...
As the altitude increases, air density decreases to cause a decrease in insulation strength. Test results low-altitude areas indicate significant impact of front time <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">t</i> (μs) on characteristics long-airgap discharge. Nevertheless, breakdown voltage at high altitudes has yet be studied. In this paper, impulse discharge characteristic tests for rod-plane gap were conducted 2500 m and 4300 m,...
Abstract Research on long-wave front discharge characteristics of lines and long gaps substation equipment in high-altitude areas needs to be conducted a systematic manner immediately order guarantee the safety economy UHV with respect external insulation. However, at present, gap test transmission is mainly carried out below 2000m above sea level. The actual challenging conduct high altitude region, data incomplete. To further confirm validity extrapolation existing areas, this paper...
This paper will start from the concept of smart grid and green energy, analyze advantages applications distributed rooftop photovoltaic (PV) power generation in energy system, study significance PV generation, as well principle material main structure solar cells, introduce basic types grid-connected systems, system structure, working principle. It explores how to promote development through looks forward its future trends challenges.
Abstract Fe and Mn‐doped Ce 0.83 Sm 0.085 Nd O 2‐& (SNDC) powders are successfully synthesized by the simple efficient solid‐liquid method. The crystallinity morphologies of were characterized X‐ray diffractometer, Raman spectrum, scanning electron microscopy. effect doping on sintering behavior, grain interior, boundary conductivity studied. can effectively reduce temperature from 1450 o C to 1250°C keep same density. Compared with SNDC, 1 mol% Fe‐doped SNDC (Fe‐SNDC) sintered at shows...
The blocks are made with C40 concrete and tested in the specified temperature curve. thermocouples used to measure field of internal blocks. After fire test, samples derived from different locations block observed scanning electron microscope (SEM) analyzed by X-ray diffraction (XRD) extrapolate maximum samples. extrapolated SEM XRD is good agreement measured thermocouples. This proves it feasibility that beam, column, wall other components after XRD, which can provide reliable data support...
The discharge characteristics of long air gaps, as an important basis for the design external insulation in ultra-high voltage transmission and transformation projects, have always been great concern to researchers. rod-plane gap, a typical problem, are also research topic many At present, although there methods calculating predicting considerable number cannot guarantee their generalization ability when facing large-scale temperature humidity changes. Therefore, order achieve accurate...
Abstract To analyze the risks caused by uncertainty of formation parameters to bullheading killing, a method for quantitatively evaluating killing is established. Firstly, considering influence gas invasion volume, fracture, and parameters, model established based on gas-liquid two-phase flow. Then, uncertainties (formation pressure permeability) are quantified. Based shut-in wellhead information, range predicted with column multiphase flow model. Considering fracture permeability, Monte...