Results 31 to 40 of about 68,031 (152)

A Numerical Simulation Study on DC Positive Corona Discharge Characteristics at the Conductor’s Tip Defect

Applied Sciences, 2023
For investigating the relationship between the surface corona discharge of a DC wire and other influencing factors, a hybrid numerical model based on a fluid-chemical reaction was proposed to simulate the discharge process at the tip defect of the wire ...
Shenghui Wang, Jiamin Mai, Lihong Wang
doaj   +1 more source

Robust Identification Method for Transmission Line Parameters That Considers PMU Phase Angle Error

IEEE Access, 2020
Accurate transmission line parameters are the basis of power system calculations. The measured phasor measurement unit (PMU) phase angle data at both ends of a line may contain large errors caused by synchronization problems, which can seriously affect ...
Ancheng Xue, Feiyang Xu, Kenneth E. Martin, Hongyu You, Jingsong Xu, Li Wang, Guoen Wei   +6 more
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Data Dependence Analysis for Defects Data of Relay Protection Devices Based on Apriori Algorithm

IEEE Access, 2020
Currently, a large amount of defect data in relay protection devices (RPDs) is accumulated in operation. However, the defect data dependence analysis is absence and thus it could not meet the demand for further improving the management and operation RPDs.
Mingwei Tian, Lie Zhang, Peng Guo, Hanfang Zhang, Qian Chen, Yanfei Li, Ancheng Xue   +6 more
doaj   +1 more source

Modeling and Analysis of Incorrect Actions of Relay Protection Systems Based on Fault Trees

IEEE Access, 2020
The safety of the power grid is threatened by incorrect action (IA) of relay protection system (RPS) resulting from defects, and even worsen a blackout. Currently, a large amount of data about IAs and defects in RPS are accumulated in operation. However,
Qian Chen, Lie Zhang, Peng Guo, Hanfang Zhang, Mingwei Tian, Yanfei Li, Ancheng Xue   +6 more
doaj   +1 more source

Grid-Scale High-Power Flywheel-Assisted Grid Frequency Regulation Technologies and Pilot Applications

CSEE Journal of Power and Energy Systems
As global energy systems transition toward high shares of renewable energy, maintaining frequency stability becomes increasingly challenging in the case of the reduced inertia and dispatchability of inverter-based resources.
Jizhen Liu, Zhongming Du, Weiming Ji, Feng Hong   +3 more
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Dynamic In‐Plane Heterogeneous and Inverted Response of Graphite to Fast Charging and Discharging Conditions in Lithium‐Ion Pouch Cells

Small Science, 2023
Solutions for improving fast charging of lithium‐ion batteries have largely focused on alleviating through‐plane lithiation gradients while little is understood about in‐plane heterogeneities and how to resolve them.
Abigale P. Monasterial, Peter J. Weddle, Kristen Atkinson, David S. Wragg, Andrew M. Colclasure, Francois L. E. Usseglio-Viretta, Natalie Seitzman, Jun-Sang Park, Jonathan Almer, Kandler Smith, Donal P. Finegan   +10 more
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A Novel Method for Screening the PMU Phase Angle Difference Data Based on Hyperplane Clustering

IEEE Access, 2019
Compared with the traditional supervisory control and data acquisition (SCADA) data, phasor measurement unit (PMU) data is characterized by phase angle measurement and high reporting speed (perhaps 100 Hz).
Ancheng Xue, Shuang Leng, Yecheng Li, Feiyang Xu, Kenneth E. Martin, Jingsong Xu   +5 more
doaj   +1 more source

Generation of second harmonic component of fault current in a doubly‐fed induction generator and mitigation measures for transformer protection

IET Renewable Power Generation, 2021
The transient characteristics of short‐circuit current (SCC) in doubly‐fed induction generator (DFIG) are quite different from the widely researched conventional synchronous machines.
Tao Zheng, Jingxian Yan, Jing Li, Xingguo Wang, Hongcheng Zhao, Sirui Wang   +5 more
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Interaction energy-based power coupling oscillation analysis and suppression of grid-forming converter connected system

International Journal of Electrical Power & Energy Systems
The power coupling effect of the grid-forming converter will cause instability oscillation when it connects to low-voltage short-distance transmission lines. To solve this problem, this paper presents an energy interaction analysis method for oscillation
Yaqi Shen, Zhuoyang Li, Jing Ma, Letian Wang, Ningsai Su, Jialong Song   +5 more
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A New Robust Identification Method for Transmission Line Parameters Based on ADALINE and IGG Method

IEEE Access, 2020
Accurate transmission line parameters are the basis of power system calculations. Aiming at obtaining accuracy online transmission line parameters in the case of large random noises even bad data in Phasor Measurement Unit (PMU) measurements, which ...
Ancheng Xue, He Kong, Yongzhao Lao, Quan Xu, Yuehuan Lin, Li Wang, Feiyang Xu, Shuang Leng, Zhiyong Yuan, Guoen Wei   +9 more
doaj   +1 more source