Results 21 to 30 of about 14,778 (170)

Insulation Monitoring and Fault Diagnosis Technology of Cross-Bonded Metal-Sheathed Cable

Energies
For addressing the challenge that cross-interconnection of metal sheaths in long-distance high-voltage cables complicates the monitoring of cable insulation faults, it is proposed a fault diagnosis scheme based on resistive current, dielectric loss ...
Chunming Wei, Dewen Zhang, Chao Xu, Long Tan, Zhongzhi Qu, Bo Zhu   +5 more
doaj   +1 more source

Insulation Resistance Monitoring Algorithm for Battery Pack in Electric Vehicle Based on Extended Kalman Filtering

Energies, 2017
To improve the accuracy of insulation monitoring between the battery pack and chassis of electric vehicles, we established a serial battery pack model composed of first-order resistor-capacitor (RC) circuit battery cells.
Chuanxue Song, Yulong Shao, Shixin Song, Silun Peng, Fang Zhou, Cheng Chang, Da Wang   +6 more
doaj   +1 more source

Study on Insulation State Detection of Electrical Equipment in Power Plant

Chemical Engineering Transactions, 2017
This paper focuses on the hardware design and implementation process of insulation condition online monitoring system. The main control circuit board of the monitoring system uses DSP+CPLD+USB as the data acquisition and control core, and the temperature
Wei Cui, Xiaofei Wu
doaj   +1 more source

On-Line Insulation Monitoring Method of Substation Power Cable Based on Distributed Current Principal Component Analysis

Energies
Monitoring the insulation condition of power cables is essential for ensuring the safe and stable operation of the substation power supply system. Leakage current is an important indicator of insulation performance of power cables.
Haobo Yang, Jingang Wang, Pengcheng Zhao, Chuanxiang Yu, Hongkang You, Jinyao Dou   +5 more
doaj   +1 more source

Seawater pipeline corrosion monitoring system based on AC impedance technology

Zhongguo Jianchuan Yanjiu, 2019
[Objectives] The installation of an insulating spacer is an important measure to prevent electrochemical corrosion between seawater dissimilar metal pipelines.
Zhang Xiaodong, Xu Zhixiong, Zhang Cong, Gao Xinhua, Chi Ying   +4 more
doaj   +1 more source

Insulation Monitoring Method for DC Systems with Ground Capacitance in Electric Vehicles

Applied Sciences, 2019
Owing to the influence of ground capacitance in electric vehicles, in the traditional unbalanced electric bridge DC insulation monitoring (DC-IM) method, the voltage of positive and negative electric bridges changes slowly.
Jifei Du, Trillion Q. Zheng, Yian Yan, Hongyan Zhao, Yangbin Zeng, Hong Li   +5 more
doaj   +1 more source

Machine Learning for Inverter-Fed Motors Monitoring and Fault Detection: An Overview

IEEE Access
Monitoring and fault detection can be critical for efficient, safe and reliable operation of electric drive systems. Unfortunately, developing accurate physics-based models for these tasks is difficult due to unknown machine parameters and incomplete ...
Diego Garcia-Perez, Mariam Saeed, Ignacio Diaz, Jose M. Enguita, Juan Manuel Guerrero, Fernando Briz   +5 more
doaj   +1 more source

Development of system of on-line monitoring, fault diagnosis and prewarning for insulation of mine-used dry-type transformer

Gong-kuang zidonghua, 2013
In view of problems that monitoring variable is single and real-time status of insulation of mine-used dry-type transformer cannot be reflected existed in traditional monitoring method of mine-used dry-type transformer because it uses thermocouple to ...
WAN Zhi-qiang, SONG Jian-cheng, LEI Zhi-peng, WEN Min-min, LI Chuan-yang   +4 more
doaj   +1 more source

Rail-to-ground Insulation Defect Diagnosis Method Based on Spatiotemporal Correlation of Rail Potential

Chengshi guidao jiaotong yanjiu
Objective The data of various monitoring points regarding rail potential as monitoring object is correlated in time and space, and the direct manifestation of changes in rail-to-rebar structural resistance is reflected in rail potential variation.
Weiguo PAN, Tian LI, Hexiang WU, Xiaopeng HUANG, Wei LIU   +4 more
doaj   +1 more source

Computational Analysis of Indoor Thermal Comfort in a Terraced Family House With Thermal Insulation

IEEE Access, 2023
Computer simulations are used to assess the impact of thermal insulation on the transfer of heat and moisture in the exterior walls of residential buildings. The effects of internal and external thermal insulation on a room in a terraced family house are
Hana Charvatova, Ales Prochazka, Martin Zalesak, Jan Drapela, Vladimir MARIiK   +4 more
doaj   +1 more source