Results 51 to 60 of about 3,739 (205)

Calculation and protection on the lighting intruding waves of 550 kv GIS substation

The Journal of Engineering, 2018
Electromagnetic Transient Programme has been used to calculate the lightning intruding wave of 550 kV GIS substation. The effects of mode operation, surge impedance and length of cable have been considered in the process of calculation.
Dongpeng Sui, Fucun Huang, Danyi Chi, Yanan Wang, Jiyang Kang, Dan Zhao   +5 more
doaj   +1 more source

Short‐Term Multi‐Horizon Line Loss Rate Forecasting of a Distribution Network Using Attention‐GCN‐LSTM

CAAI Transactions on Intelligence Technology, EarlyView.
ABSTRACT Accurately predicting line loss rates is crucial for effective management in distribution networks, particularly for short‐term multihorizon forecasts ranging from 1 hour to 1 week. In this study, we propose attention‐GCN–LSTM, a novel method that integrates graph convolutional networks (GCN), long short‐term memory (LSTM) and a three‐level ...
Jie Liu, Yijia Cao, Yong Li, Yixiu Guo, Wei Deng   +4 more
wiley   +1 more source

Optimal Sizing of a Hybrid Renewable Energy System for Auxiliary Services in Substations Through Genetic Algorithm and Variable Neighborhood Search

IEEE Access
Auxiliary services in substations are fundamental systems for the operation and coordination of power electrical systems. Because of their importance, backup systems are utilized to support critical loads during main power supply failures.
Matheus Holzbach, John Fredy Franco Baquero, Mariana Resener   +2 more
doaj   +1 more source

Classification of common discharges in outdoor insulation using acoustic signals and artificial neural network

High Voltage, 2019
Condition monitoring of outdoor insulation systems is crucial to the integrity of distribution and transmission overhead lines and substations. The objective of this study is to use a commercial acoustic sensor along with artificial neural network (ANN),
Satish Polisetty, Ayman El-Hag, Ayman El-Hag, Shesha Jayram, Shesha Jayram   +4 more
doaj   +1 more source

Regional Infrared and Visible Image Registration for Distribution Substation Areas With Wide Depth of Field

High Voltage, EarlyView.
ABSTRACT Infrared and visible image registration is a key task in automated distribution network inspection. Previous approaches typically apply a single homography to align infrared and visible images leading to local misalignment. To address this, this study proposes a novel region‐based registration algorithm specifically designed for wide‐depth ...
Yingchen Zhang, Bo Wang, Fei Tang
wiley   +1 more source

Assessment method for identification of electrical connectivity and thermal stability of power grid

The Journal of Engineering, 2019
Primary equipment failure in substation has a significant impact on the reliability of the power supply, and even threatens the thermal stability of power grid.
Yao-Yu Xu, Liang-Shu Li, Shuang-Zan Ren, Yuan Li, Ning Liu, Guan-Jun Zhang   +5 more
doaj   +1 more source

An Improved Fast Computational Method for Vibration Characteristic Analysis of Dry‐Type Iron Core Reactor

High Voltage, EarlyView.
ABSTRACT Structural mechanics field simulation plays a critical role in the vibration characteristic analysis of electrical equipment. Existing structural field analysis of equipment based on numerical simulation faces challenges such as convergence difficulties and prolonged computational time, failing to meet the demand for real‐time prediction of ...
Wanqing Wang, Caibo Liao, Bang Liu, Kai Li, Wenyu Liu, Zhaoguo Li, Xianfa Tian   +6 more
wiley   +1 more source

Analysis of the Restoration of Distribution Substations: A Case Study of the Central–Western Division of Mexico

Energies
The studies on strategies for improving restoration times in electrical distribution systems are extensive. They have theoretically explored the application of mathematical models, the implementation of remotely controlled systems, and the use of digital
Carlos Sánchez-Ixta, Juan Rodrigo Vázquez-Abarca, Luis Bernardo López-Sosa, Iman Golpour   +3 more
doaj   +1 more source

Research and Application of One-key Sequence Control Technology for Substations [PDF]

E3S Web of Conferences, 2019
The substations are important parts of modern electrical grids. In this sense, it is necessary to enhance the management efficiency and robustness of the substations.
Li-Qing Ge, Jian-Feng Wang, Jing-Yu Teng, Ming Yang   +3 more
doaj   +1 more source

Comparison of Dielectric Recovery After Arc Burning in SF6 Gas and Its Potential Alternatives

High Voltage, EarlyView.
ABSTRACT Although sulphur hexafluoride (SF6) exhibits exceptional insulating properties, it is a potent greenhouse gas. Therefore, studying alternatives to SF6 is critical for developing environmentally friendly high‐voltage electrical equipment.
Ziqi Liu, Hao Sun, Yi Wu, Mingzhe Rong, Zeyuan Luo   +4 more
wiley   +1 more source