Results 21 to 30 of about 6,833,731 (285)

Real-Time Monitoring & Adaptive Protection of Power Transformer to Enhance Smart Grid Reliability

Electrical, Control and Communication Engineering, 2019
Power transformer is one of the most important pieces of equipment in the grid to reliably and efficiently transmit power to the consumers. Asset management and protection are the best concepts for prolongation of transformer lifespan as well as for the ...
Raichura Maulik, Chothani N. G., Patel Dharmesh   +2 more
doaj   +1 more source

Power Transformers and Environmental Protection

IFAC-PapersOnLine, 2016
Abstract: Power transformers are among the most expensive equipment installed in power plants and substations. Generally, they contain large quantities of combustible material which can, in the event of ignition, spread fire to adjacent installations.
Leoš Valenta, Ivan Černý, Anna Maternik-Demontoux   +2 more
openaire   +1 more source

Protecting power equipment against magnetohydrodynamic effects (MHD) of electromagnetic pulses (EMP) [PDF]

Serbian Journal of Electrical Engineering, 2015
The article is devoted to the effects of geomagnetic-induced currents (GIC) on electrical equipment of power systems and analyzes technical measures for protection against such effects.
Gurevich Vladimir
doaj   +1 more source

Research on the structure and safety of transformer bushing tap adapter

Zhejiang dianli, 2022
Tap adapter is necessary in online monitoring of transformer bushings to induct current connected to bushing tap. In this paper， earthing structures of transformer bushings in one provincial power grid are investigated.
XIA Jian, ZUO Jie
doaj   +1 more source

Analysis of Backup Protection Action of a Transformer Caused by Improper Implementation of Voltage Regulation Measures [PDF]

E3S Web of Conferences, 2021
It is an effective measure for power enterprises to improve the voltage level of the system by raising and lowering the tap position of the main transformer.
Chen Yu, Ding Hongcheng, Zhang Junwei, Ding Ganghui, Cui Jun, Hu Shengzhi   +5 more
doaj   +1 more source

A new scheme of zero-sequence overcurrent protection of converter transformer based on zero-mode inrush current characteristics in station area

Energy Reports, 2022
Under the development trend of AC/DC hybrid power grids, converter transformers are indispensable as AC/DC conversion equipment, whose safety and stability are particularly important.
Yuanlin Pan, Zhichang Liu, Xin Yin, Wei Xi, Xianggen Yin, Binyan Liu   +5 more
doaj   +1 more source

Improving the Protection of Step-Down Transformers by Utilizing Percentage Differential Protection and Scale-Dependent Intrinsic Entropy

Entropy
Transformer operations are susceptible to both internal and external faults. This study primarily employed software to construct a power system simulation model featuring a step-down transformer.
Chia-Wei Huang, Chih-Chiang Fang, Wei-Tai Hsu, Chih-Chung Yang, Li-Ting Zhou   +4 more
doaj   +1 more source

Thermal field modeling and characteristic analysis based on oil immersed transformer

Frontiers in Energy Research, 2023
Oil-immersion transformer plays an important role in the operation of power system, and its reliable operation is the basis of the safe and economic operation of power system.
Chao Gao, Lijun Huang, Yuhui Feng, Erya Gao, Zhongqing Yang, Kai Wang   +5 more
doaj   +1 more source

Low-frequency transformer protection method based on sinusoidal fitting residuals of differential currents

International Journal of Electrical Power & Energy Systems
Offshore wind power low-frequency transmission system locally presents 100% power electronics and both sides are controlled system, by the influence of bilateral power electronic power control strategy, offshore wind power low-frequency transmission ...
Shuping Gao, Zhe Quan, Xinyu Wu, Guobing Song, Chenqing Wang   +4 more
doaj   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source