Results 1 to 10 of about 1,976 (165)

A Heuristic Method for the Reduction of the Outage Rate of High-Voltage Substations Due to Atmospheric Overvoltages

open access: yesApplied Sciences (Switzerland), 2018
The adequate protection against lightning surges and the limitation of the expected annual failure rate of high-voltage substations are critical issues, in an effort to secure the safety of the equipment and the personnel.
Christos A Christodoulou   +2 more
exaly   +3 more sources

Numerical Analysis of Transient Performance of Grounding Grid with Lightning Rod Installed on Multi-Grounded Frame

open access: yesEnergies, 2021
In large substations, many lightning rods are installed on multi-grounded frames. The lightning rods, the frame, the grounding grid and the soil form a whole body, and the lightning current will be discharged from many grounding points.
Zhuoran Liu, Weidong Shi, Bo Zhang
doaj   +1 more source

Upgradation of Existing Substation into a Smart Substation

open access: yesAdvances in Research, 2020
The evolution of existing grids to smart grids for power supply is technologically the most prominent research area. It is one of the hot projects considered to contribute in national economy, also at the top priority for the country and involves hefty investments, although the entire research and development area is still immature.
Preetinder Singh, Veena Kumari
openaire   +2 more sources

Ensuring safe operating conditions for power transformers under thermal effects of short-circuit curre

open access: yesAdvanced Engineering Research, 2018
Introduction. Power transformers are the basic equipment of the industrial power systems. One of the key indicators of determining the service lifetime of the transformer including its performance characteristics is the condition and residual life of its
A. V. Kostyukov   +2 more
doaj   +1 more source

A Novel Partial Discharge Localization Method in Substation Based on a Wireless UHF Sensor Array

open access: yesSensors, 2017
Effective Partial Discharge (PD) localization can detect the insulation problems of the power equipment in a substation and improve the reliability of power systems.
Zhen Li   +4 more
doaj   +1 more source

Active Reduction of Short-Circuit Current in Power Distribution Systems

open access: yesEnergies, 2020
In this paper, a new concept of short-circuit current (SCC) reduction for power distribution systems is presented and analyzed. Conventional fault current limiters (FCLs) are connected in series with a circuit breaker (CB) that is required to limit the ...
Esteban Pulido   +3 more
doaj   +1 more source

Selecting Communication Technologies for an Electrical Substation Based on the AHP

open access: yesIEEE Access, 2023
Traditional communication technologies for distribution substations will soon have difficulties meeting the needs of emerging applications. This is due to exponential population growth and future energy demands, necessitating a reliable and fast response
Nayli Adriana Azhar   +9 more
doaj   +1 more source

Study on clearance optimisation and altitude correction of 750 kV AC side for UHVDC converter transformer

open access: yesThe Journal of Engineering, 2019
AC system which ±800 kV converter station access to commonly used 500 kV voltage level. With the construction of the Northwest Energy Base, a large number of ultra-high-voltage direct current (UHVDC) project are constructing.
Yujian Ding   +3 more
doaj   +1 more source

Analysis of resonant characteristics of Yunnan power grid under different operating modes of AC/DC hybrid systems

open access: yesThe Journal of Engineering, 2018
Resonance or harmonic amplification occurs when the frequency of the harmonics generated by the converter station is near the inherent resonance frequency of the substation.
Liu Helin, Wen Jun, Yu Shiyou, Li Jiaqi
doaj   +1 more source

Research for shielding effect of three-phase air-core reactors in substation by using different materials

open access: yesThe Journal of Engineering, 2018
To research the magnetic field interference on cables nearby three-phase air-core reactors and the shielding effect of different materials, this study analysed the influence on spatial magnetic field by using high-conductivity materials and high ...
Tao Wenbiao   +4 more
doaj   +1 more source

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