A5100631990- High voltage insulation and dielectric phenomena
- Lightning and Electromagnetic Phenomena
- Electrical Fault Detection and Protection
- Crystallization and Solubility Studies
- Thermal Analysis in Power Transmission
- Electrostatic Discharge in Electronics
- X-ray Diffraction in Crystallography
- Advanced Sensor and Control Systems
- Power Transformer Diagnostics and Insulation
- Magneto-Optical Properties and Applications
- Geoscience and Mining Technology
- Advanced Fiber Optic Sensors
- Magnetic Field Sensors Techniques
- Advanced Algorithms and Applications
- Power Line Communications and Noise
- Power Systems Fault Detection
- Geomechanics and Mining Engineering
- Industrial Technology and Control Systems
- Plasmonic and Surface Plasmon Research
- Electromagnetic Scattering and Analysis
- Optical Network Technologies
- Fuzzy and Soft Set Theory
- Plasma Diagnostics and Applications
- Advanced Photonic Communication Systems
- Geophysical Methods and Applications
Xi'an Jiaotong University
2016-2025
Jianghan University
2023-2025
Affiliated Hospital of Hebei University
2025
City University of Hong Kong, Shenzhen Research Institute
2023-2024
Tianjin University
2022-2024
State Key Laboratory of Electrical Insulation and Power Equipment
2024
Shanxi Coal Transportation and Sales Group (China)
2024
Anyang Institute of Technology
2019-2024
Northeast Forestry University
2023
Weifang Medical University
2023
Objective: This study focuses on the clinical observation of impact different treatment methods for gestational heart failure delivery outcomes. Method: A total 160 pregnant women with admitted to our hospital between October 2020 and 2021 were selected as subjects. They categorized based mode, timing, control time, cardiac function status. The outcomes groups then compared. Result: In terms methods, rate neonatal asphyxia was higher following vaginal than cesarean section. Regarding...
When an induction motor is running at stable speed and low slip, the fault signal of motor’s broken bar faults are easily submerged by power frequency (50 Hz) signal. Thus, it difficult to extract characteristics. The left-side harmonic component representing characteristics can be distinguished from owing V-shaped trajectory in time-frequency (t-f) domain during startup. This article proposed a scheme detect discriminate severity under starting conditions. In this scheme, successive...
This paper develops a fully automatic tool for the denoising of partial discharge (PD) signals occurring in electrical power networks and recorded on-site measurements. The proposed method is based on spectral decomposition PD measured signal via joint application short-time Fourier transform singular value decomposition. estimated noiseless reconstructed clever selection dominant contributions, which allows us to filter out different spurious components, including white noise discrete...
This letter presents an improved technique to identify the traveling direction (TD) of partial discharge (PD) on overhead covered conductors. A hybrid PD transducer based Rogowski coil is developed for online detection. An experimental study performed a 10-kV XLPE conductor prove effectiveness this technique.
This letter presents a cost-effective technique for partial-discharge testing of medium-voltage (MV) cables using combined ac and damped (DAC) voltage. The DAC voltage is generated by conventional variable-frequency resonant test system two high-speed switches. An experimental study on-site are performed to validate the proposed technique.
This paper proposes a novel method of detecting insulation faults in power transformer based on damped oscillating voltage waves (DOVW). With reference to IEC60270, the single-phase are identified by partial discharge (PD) signals. In this research, PD signals were attained under two energizing methods individually. A comparison behavior corresponding conventional AC 50 Hz and DOVW has been presented. Based laboratory tests, is judged be effective. research enabled us identify prevent damage time.
This paper proposes an innovative partial discharge (PD) location technique for overhead electrical power distribution networks. It is aimed at improving the condition-based maintenance of network. PD localization carried out via improved double-sided traveling-wave method. The method driven by a hybrid detection technique, which integrates pulse-based synchronization mechanism and global positioning system (GPS). proposed solution offers number benefits. has nice inherent feature being...
The burgeoning demand for enhanced power-system safety means that there is increased attention on technologies the detection and location of cable faults. double-terminal fault method, which senses a current using transformer (CT), most effective widely applied method in industrial practice. However, CT sensors may suffer from magnetic saturation when exposed to high current, resulting significant errors, their sensitivity cannot be adjusted. To address this problem, paper describes an...
Partial discharge (PD) detection has proven to be one of the most acceptable techniques for insulation estimation power apparatus. A powerful tool conducting on‐site PD and location in cables is urgently needed. In view this issue, study covers research development efforts design, implement, test a novel damped AC (DAC) system based on frequency‐tuned resonant technique (AC–DAC). This gives cost‐effective solution cables. The topology operation principle proposed are presented described....
The growing popularity of quasi-solid-state supercapacitors inevitably leads to the unrestricted consumption commonly used petroleum-derived polymer electrolytes, causing excessive carbon emissions and resulting in global warming. Also, porosity liquid electrolyte uptake existing membranes are insufficient for well-performed under high current long cycles. To address these issues, poly(lactic acid) (PLA), a widely applied polymers biodegradable plastics is employed fabricate renewable...
Abstract To accurately detect the early deterioration of electrical insulation in power cables, an energizing system is required for offline partial discharge (PD) measurements. The damped alternating current (DAC) testing has emerged as effective tool inducing PD events. However, existing systems often suffer from limitations such signal interference, low sensitivity, and high costs. address these issues, this study proposes a novel dual‐resonance DAC that simple structure cost‐effective....
This paper describes methods for reducing and measuring random jitter (RJ) of clock signals in multi-GHz test instruments. The are based on real-time averaging parallel/synchronized with uncorrelated RJ. Prior work (up to 10 GHz) is extended by experimental demonstration up 36 GHz RJ below 200 femtoseconds (fs). theory operation reviewed results shown 12 GHz. A de-embedding procedure used separate the contribution instruments (jitter "floor") from measured values obtain a better estimate...