A5100410110- High voltage insulation and dielectric phenomena
- Power Transformer Diagnostics and Insulation
- Lightning and Electromagnetic Phenomena
- Electrical Fault Detection and Protection
- Advanced Sensor and Energy Harvesting Materials
- High-Voltage Power Transmission Systems
- Dielectric materials and actuators
- Electrostatic Discharge in Electronics
- CCD and CMOS Imaging Sensors
- Vehicle Noise and Vibration Control
- Thermal Analysis in Power Transmission
- Hydrological Forecasting Using AI
- Noise Effects and Management
- Semiconductor materials and devices
- Engineering and Material Science Research
- Aerodynamics and Fluid Dynamics Research
- Flood Risk Assessment and Management
- Energy Load and Power Forecasting
- Smart Grid and Power Systems
- Power Line Inspection Robots
- Industrial and Mining Safety
- Geoscience and Mining Technology
- Sensor Technology and Measurement Systems
- Membrane Separation Technologies
- Aerosol Filtration and Electrostatic Precipitation
State Grid Corporation of China (China)
2021-2024
State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation
2024
Heilongjiang Electric Power Workers University
2022-2023
Harbin Electric Corporation (China)
2023
China University of Mining and Technology
2022
Laboratoire de Mécanique, Multiphysique, Multiéchelle
2018
Pacific Northwest National Laboratory
2013-2018
Wuhan University
2017
Camden County College
2007
Recent studies show that CF <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> I is possible to take the place of SF xmlns:xlink="http://www.w3.org/1999/xlink">6</sub> used in gas insulated switchgear (GIS) as insulating gas. H xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> O one key factors influencing categories and quantities decomposition products SF6 discharge. The process influence from on property have not been studied. In this...
The smoothing reactor is prone to surface discharge at the end of junction between star frame and external insulation. To enhance dc voltage cladding insulation reactor, 3, <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$3'$ </tex-math></inline-formula> ,4, notation="LaTeX">$4'$ -diphenylketetracylic anhydride (BTDA) used molecular chain crosslinking degree epoxy/glass fiber (EP/glass) composites, Fourier...
This study analyzed the transformer electromagnetic gap propagation characteristics. The influence of size is also analyzed, and results experimentally verified. obtained indicated that characteristics wave signals radiated by partial discharge (PD) source in different directions are substantially different. intensity reaches a maximum at height 1 cm; inside gap, depicted an increasing trend tail area gap. Finally, from results, some suggestions on where to install sensors practical systems...
In order to improve electrical matching between ethylene-propylene-diene misch-polymere (EPDM) reinforce insulation and crosslinked polyethylene (XLPE) main in direct current (DC) cable accessories, the glyceryl monooleate (GMO) organic compound composed of several polar-groups one long carbon chain is employed for chemical graft modification on EPDM ameliorate DC performances. Charge trap characteristics are analyzed by testing thermal stimulation (TSC) verified calculating first-principles...
Surface flashover occurs at the external insulation of epoxy-based dry-type air-core reactors, which suffers from severe electric field distortion interface between star-frame arm and epoxy/glass composites. A study on triggering factors AC DC surface flashovers their effects characteristics AC/DC superimposed is urgently needed. In this study, flashover, partial discharge, charge were measured epoxy composites using voltage, superposition with different voltage ratios. The discharge...
In this work, the empirical relationship among three apparent parameters in hydrophilic–lipophilic deviation (HLD) equation was studied to provide help using HLD design a block polyether water clarifier for treating produced an oilfield. Ten polyethers (including six linear and four branched polyethers) were prepared, their equations measured. By curve fitting, hydrophobicity characteristic (K), curvature (Ccn), temperature coefficient (ct) of obtained: K = 9.32ct, Ccn 18e–24.5K (for...
Exposure correction is a fundamental problem in computer vision and image processing. Recently, frequency domain-based methods have achieved impressive improvement, yet they still struggle with complex real-world scenarios under extreme exposure conditions. This due to the local convolutional receptive fields failing model long-range dependencies spectrum, non-generative learning paradigm being inadequate for retrieving lost details from severely degraded regions. In this paper, we propose...
In this paper, we designed and built a surface discharge test system for the macroscopic interface between solid insulating medium inorganic powder used to study characteristics of magnesium oxide epoxy resin under different particle sizes, stacking states interval times DC voltage. The experimental results show that can improve insulation level compared with air, tight extended along-surface effectively performance resin.
Abstract Under the action of long-term high-voltage DC voltage, insulation electrical equipment is inevitably aging, and it necessary to monitor its status. Since defects different nature damage degrees, identification very important. To this end, a partial discharge detection system based on AC was built, focusing key issues such as choice test power supply, frequency, pressurization methods. The successful completion on-site UHV converter transformers has provided valuable practical...
In the entire power supply traction system, roof insulator of EMU has function isolating related equipment, supporting pantograph, busbar and other high-voltage which is very important to stable operation EMU.This article based on fluid flow tracking model turbulence in field, combined with actual situation, establishes a two-dimensional CAD imports it into Solidworks software build three-dimensional. Use COMSOL Multiphysics finite element explore pollution particle deposition top insulation...
Abstract The gap between overhead ground wire insulators is changed by external force or subjected to overvoltage, intermittent breakdown will occur, and continuous arcing occur in severe cases. Real-time monitoring of the current change on significance reliable operation major. article proposes a method detect surface contamination composite measuring insulator. characteristics are studied, test loops insulator current, body leakage established respectively. above three currents were...
In order to further improve the accuracy of rainfall prediction, this paper proposes a Bi-LSTM prediction model incorporating an attention mechanism. The splits input sequence into spatio-temporal and feature sequence, introduces mechanism before network calculate two sequences separately fusion. can adaptively select most important features according their importance, parameters layer are obtained by competitive random search algorithm, which enhances robustness model. Finally, experiments...
In this paper, based on fusion monitoring technology, communication information processing the establishment of substation remote intelligent inspection system. The system adopts browser/server (B/S) three-layer network distribution structure, which is divided into application end, end and server end. Intelligent multi-dimensional image realizes real-time video function substation, automatic equipment, analysis alarm function. obtains surveillance data through unified platform (SG-UVP)....
According to the actual size of basin insulator, a three-dimensional simulation model is established. The electric field distribution rule defect-free insulator under rated voltage calculated. influence bubble defects at different positions and volumes on analysed. In addition, experimental tooling designed platform built in combination with operating environment. Under standard test voltage, parallel circuit measurement method pulse current used detect partial discharge signal tested...