Results 61 to 70 of about 2,074 (217)

HVDC Submarine Power Cables in the World: State-of-the-Art Knowledge [PDF]

, 2015
This report is the first deliverable of the OTG ("Offshore Transnational Grid") Work Package (2015-2016), which is intended to identify and analyse the engineering and geopolitical challenges for realising a transcontinental energy interconnection ...
ARDELEAN MIRCEA, MINNEBO PHILIP
core   +1 more source

Discrimination of Insulation Defects in a Gas Insulated Switchgear (GIS) by use of a Neural Network Based on a Chaos Analysis of Partial Discharge (CAPD) [PDF]

Journal of Electrical Engineering and Technology, 2007
In this work, experimental investigation is carried out in order to design and fabricate the UHF sensor that is able to detect the partial discharges produced from 10 artificial defects introduced into the real scale 70kV GIS mock-up under high voltage within a well shielded room. As well, in order to verify the on-site applicability of our method, the
Seoung-Yong Jung, Cheol-Hwi Ryu, Yun-Sok Lim, Ja-Ho Lee, Ja-Yoon Koo   +4 more
openaire   +1 more source

Quantitative Evaluation of Mechanical Defects for Circuit Breakers Based on Self‐Adaptive Fault Feature Tracking

High Voltage, Volume 11, Issue 1, Page 297-304, February 2026.
ABSTRACT Many researchers are committed to improving the diagnosis accuracy and solving the few‐shot problem on circuit breakers (CBs). However, the research on the vibration transmission mechanism of the fault is insufficient, which makes it difficult to find the potential design defects of CBs through vibration.
Jiayi Gong, Yaxiong Tan, Shangding Li, Jian Li   +3 more
wiley   +1 more source

Stress Measurements of GIS Epoxy Composite with Transverse Waves Based on the Ultrasonic Pulse-Echo Method

Applied Sciences, 2023
The mechanical reliability of the gas-insulated metal-enclosed switchgear (GIS) is critical to the safe and stable operation of a power system. The internal stress induced in GIS insulators, which typically lead to cracking, can degrade the mechanical ...
Zhouyiao Zou, Haian Qiu, Fangyuan Tian, Cuizhe Kuang, Weiming He, Fusheng Zhou, Yu Gu, Haomin Ma, Youde Ruan, Zhiming Huang   +9 more
doaj   +1 more source

Surface Flashover in 50 Years: III. Extreme Environments and Industrial Challenges

High Voltage, Volume 11, Issue 1, Page 100-142, February 2026.
ABSTRACT Modern high‐voltage electrical equipment operates in complex environments where surface conditions are subjected to multifaceted influences from electric fields, thermal gradients, contaminants, irradiation and other extreme environmental factors.
Zhen Li, Heng Zhang, He Gao, Ji Liu, Yoshimichi Ohki, George Chen, Shengtao Li   +6 more
wiley   +1 more source

Calibration of Free-Space Radiometric Partial Discharge Measurements [PDF]

, 2017
The present study addresses the calibration of four types of partial discharge (PD) emulators used in the development of a PD Wireless Sensor Network (WSN).
Atkinson, R, Glover, Ian, Jaber, Adel, Judd, M, Lazaridis, Pavlos, Moradzadeh, Mohammad, Vieira, M F Q, Zaharis, Zaharias D.   +7 more
core   +1 more source

Accurate Harmonic Voltage Measurement Based on Series Resistive‐Capacitive Divider for Gas‐Insulated Switchgear

IET Science, Measurement &Technology, Volume 20, Issue 1, January/December 2026.
A series resistive‐capacitive divider for harmonic voltage measurement of gas‐insulated switchgear was studied. It can step down the voltage while amplifying the proportion of harmonics in the total sensed voltage, thereby increasing the significant figure for the measurement and enabling the accurate measurement of high‐order, low‐amplitude harmonics.
Huizhong Pang, Ruiting He, Fei Liang, Yue Li, Huisi Liu, Wenbo Zhou, Binxian Lu   +6 more
wiley   +1 more source

PROPOSAL OF NEW K-FACTOR FUNCTION IN LIGHTNING IMPULSE TEST FOR ELECTRIC POWER EQUIPMENT [PDF]

, 2017
Ultra high voltage (UHV) systems are increasingly being planned and constructed, hence studies are promoted on the standard for high-voltage test techniques for UHV-class equipment.
Hikita M., Okabe S., Tsuboi T., Ueta G.   +3 more
core   +1 more source

Adaptive Local Multigrid Methods for the Solution of Time Harmonic Eddy Current Problems [PDF]

, 2005
The efficient computation of large eddy current problems with finite elements requires adaptive methods and fast optimal iterative solvers like multigrid methods.
Hauser, Andreas, Sterz, Oliver, Wittum, Gabriel   +2 more
core   +1 more source

Research Status of Substation Vulnerability Under the Coupling Effect of Earthquake and Strong Wind

Advances in Civil Engineering, Volume 2026, Issue 1, 2026.
With the progressive advancement of China’s power industry toward higher voltage levels and larger capacity, substations have become critical infrastructures whose resilience to natural disasters requires urgent enhancement. In particular, under the coupled effects of multiple hazards such as earthquakes and strong winds, the optimization of substation
Yihua Gao, Hong Liu, Yijie Wang, Bo Wen, Jiajun Fu, Yi Shan   +5 more
wiley   +1 more source