Results 31 to 40 of about 14,305 (269)

Charge vibration behaviour in polyimide under the pulse voltage with different rise and fall times

High Voltage, 2022
High‐voltage electronic equipment is widely used in power systems, which normally operate under the pulse voltage condition. However, compared to DC or AC stress, the electrical insulation suffers a more severe ageing process under a pulse voltage with ...
Tao Zhang, Dongxin He, Junyu Wei, Hongshun Liu, Qingquan Li, Gilbert Teyssedre   +5 more
doaj   +1 more source

Comparative evaluation of multiple machine learning models for power system fault diagnosis

Frontiers in Energy Research
BackgroundAs power systems continue to expand in scale and complexity, fault types have become increasingly diverse and their propagation mechanisms more difficult to capture through conventional rule-based methods.
Huiwei Liu, Pengjie He, Ziqiang Lu, Jie Li, Ziying Lu, Jinchuan Jia   +5 more
doaj   +1 more source

An Advanced Partial Discharge Recognition Strategy of Power Cable

Journal of Electrical and Computer Engineering, 2015
Detection and localization of partial discharge are very important in condition monitoring of power cables, so it is necessary to build an accurate recognizer to recognize the discharge types.
Xiaotian Bi, Ang Ren, Simeng Li, Mingming Han, Qingquan Li   +4 more
doaj   +1 more source

suzbar/UHV-Vacuum-Automation: Initial-prototype

, 2018
Initial-develoment, prototype code developed as part of PhD research into automated vacuum (UHV) chamber sample ...
suzbar
core   +1 more source

Corona Loss Prediction of UHV AC Transmission Line Based on DBN Neural Network Optimized by PSO

Zhongguo dianli, 2022
Based on the correlation between corona loss of UHV AC transmission lines and weather conditions such as rainfall, specific humidity, temperature, relative humidity, pressure, etc., a corona loss prediction method for UHV AC transmission lines is ...
Shumin HUANG, Lingao JIANG, Zhichuan LI, Guangxu YANG, Fugen SONG   +4 more
doaj   +1 more source

Parameter Identification Method for Transformer Winding Equivalent Networks Based on Frequency Response Analysis: A Comparative Study

Energies
Transformers are essential power transformation equipment in power systems. Winding deformation is one of the main forms of transformer winding faults, which may cause performance degradation or even overall damage to the equipment.
Ran Zhu, Fuqiang Ren, Zhaoyang Kang, Yonghao Zhang, Shujun Liu, Kaining Hou, Hongbin Wu, Jiawen Wang, Hongshun Liu, Qingquan Li   +9 more
doaj   +1 more source

Further Research on Insulation Coordination of UHV Half-Wavelength Power Transmission Line

Zhongguo dianli, 2019
Ultra high voltage half wavelength transmission (UHV HWACT) is a kind of transmission mode with large capacity and long distance, which has the advantages that it is not necessary to install reactive compensation devices of the line and to build switch ...
Liuchun ZHANG
doaj   +1 more source

Simulation Experiment on Discharge of Plastic Film Overlapping on UHVDC Transmission Lines

Zhongguo dianli, 2022
In order to study the discharge phenomena of plastic film overlapping on UHV DC transmission lines and explore the cause of flashover fault of a ± 800 kV UHV line, an experimental study is conducted on the flashover characteristics of plastic film with ...
Shenghui WANG, Ximing WANG, Xinghao DONG, Jun ZHOU   +3 more
doaj   +1 more source

Stepwise On‐Surface Synthesis and Transformations of Two‐Dimensional Covalent Organic Frameworks by Controlled Thermal Stimuli

Advanced Materials, EarlyView.
The seminal transformation of a 2D‐COF (SURFCOF‐IMDEA1) into a 2D porous COF (SURFCOF‐IMDEA2) on Au(111) by a sequential C‐C coupling and ladderization triggered by thermal annealing steps at increasing temperatures is reported. Abstract The development of covalent organic frameworks (COFs) is currently a primary objective in materials science, taking ...
Ana Barragán, Elena Pérez‐Elvira, Diego J. Vicent, Marco Lozano, Diego Soler‐Polo, Koen Lauwaet, José M. Gallego, Rodolfo Miranda, José I. Urgel, Pavel Jelínek, Nazario Martín, David Écija   +11 more
wiley   +1 more source

Electromagnetic Transient Simulation Algorithm for Nonlinear Elements Based on Rosenbrock Numerical Integration Method

IEEE Access
Traditional nonlinear elements of the electromagnetic transient simulation program (EMTP) use the numerical integration method, often employing the trapezoidal integration method as an implicit algorithm. However, when the number of nonlinear elements is
Jing Ye, Jihao Xie, Yong Wang, Liang Zhang, Binshan Li, Jinwei Lv, Ke Li, Shengpeng Jin, Yang Xu, Wei Ma   +9 more
doaj   +1 more source