Results 11 to 20 of about 13,024 (250)

Overvoltage Mechanism of 66 kV Submarine Cable Transmission System for Offshore Wind Farm

Zhongguo dianli, 2023
Overvoltage level is the key parameter of the offshore wind power transmission system, which has significant impact on the system design and equipment selection.
Xiaohe WANG, Haichao YANG, Shuang SONG, Yuxin YANG, Gui YIN, Ke WANG   +5 more
doaj   +1 more source

Comparative Simulation Analysis of Selected Medium and High Voltage Surge Protection Devices

Energies, 2022
The aim of the article is to present and analyze the processes occurring as a result of installing a long flashover arrester (LFA) and a multi-chamber arrester (MCA) as overvoltage protection of power networks. The numerical models of LFA and MCA will be
Michał Borecki, Yevhen Kharchenko
doaj   +1 more source

Testing of Selected Surge Protection Devices in the Context of the Possibility of Ensuring the Reliability of Power Grids

Energies, 2023
The paper aims to analyze the parameters of prototypes of new overvoltage protection devices for power grids—a multi-chamber insulator arrester (MCA) and a long flashover arrester (LFA). The article presents the research results on determining the actual
Michał Borecki, Maciej Ciuba
doaj   +1 more source

A further look at dynamic electro-geometrical model: Its fundamentals and implementation

Ain Shams Engineering Journal, 2020
The rolling sphere method for air termination placement on a structure is easy to apply, but it cannot be used to determine the probability of lightning strike to different points on the structure.
Aderibigbe Israel Adekitan, Michael Rock
doaj   +1 more source

Generator step up transformer overvoltage protection in EPS power plants [PDF]

Zbornik Radova: Elektrotehnički Institut "Nikola Tesla", 2015
This paper presents the current state of the overvoltage protection of generator transformers in power plants of the Power Company of Serbia (EPS) and gives a critical overview of their overvoltage protection.
Mrvić Jovan, Vukelja Petar, Simić Ninoslav   +2 more
doaj   +1 more source

Insulator fault feature extraction system of substation equipment based on machine vision

IET Networks, EarlyView., 2022
Abstract The artificial intelligence technology and intelligent automation are more and more widely used, the insulators play a supporting and insulating role in the operation of the grid. The use of machine vision inspection technology to detect insulator faults has become an inevitable trend of the times.
Keruo Jiang, Qiaoqun Xia, Lijun Ma, Xin Xu, Zhipeng Shao   +4 more
wiley   +1 more source

Harmonic elimination of a fifteen‐level inverter with reduced number of switches using genetic algorithm

IET Power Electronics, EarlyView., 2023
This article presents a Fifteen‐level inverter topology that has a lesser number of switches (12) and can accommodate isolated DC sources. The total harmonic elimination (THD) of the proposed topology using genetic algorithm is within the IEEE 519 standards. Further, the fifteen‐level inverter is implemented in Hardware and firing pulses were generated
Yogesh Joshi, Shimi Sudha Letha, Farhad Ilahi Bakhsh, Gopal Lal Jaat, Suyash Tilak   +4 more
wiley   +1 more source

Simulation and Protection of Reignition Overvoltage in Wind Farm Considering Microscopic Dielectric Recovery Process of Vacuum Circuit Breaker

Energies, 2023
The high amplitude and steep overvoltage generated by the breaking of the vacuum circuit breaker in the wind farm damages the inter-turn insulation of the transformer.
Ziheng Pu, Hao Liu, Yaoqiang Wang, Xinyun Yu, Tian Wu   +4 more
doaj   +1 more source

Effect of the drop out fuse connection scheme on the overvoltage and the surge arrester in a distribution system

Energy Reports, 2023
Overvoltage is a critical problem of Thailand’ distribution system. The electrical protection device in the distribution system needs to be able to support this level of overvoltage.
Chaiyaporn Lothongkam, Theerasak Patcharoen, Suntiti Yoomak   +2 more
doaj   +1 more source

Study on lightning protection scheme of multi-terminal MMC-MVDC distribution system

High Voltage, 2020
Based on a ±10 kV three-terminal MMC-MVDC (medium voltage DC distribution system based on modular multilevel converter) system, in this study, the authors mainly study on the influencing factors and protection schemes of the lightning intruding ...
Yuqun Gao, Yongxia Han, Fanglei Xiao, Changfu Chen, Jinghan Zhang, Jie Zhang, Yaqi Zhang, Licheng Li   +7 more
doaj   +1 more source