scholarly journals Electric Field Mitigation Near Over Head Power Lines Using Voltage Unbalance

2021 ◽  
Vol 4 (1) ◽  
pp. 155-165
Author(s):  
Mohammad Abd-Ellatif ◽  
Amr Gody ◽  
El-Sayed Tag El Din ◽  
Khaled Ibrahim
Keyword(s):  
Electric Field ◽  
Power Lines ◽  
Voltage Unbalance

scholarly journals Dynamic Line Rating—An Effective Method to Increase the Safety of Power Lines

2021 ◽  
Vol 11 (2) ◽  
pp. 492
Author(s):  
Levente Rácz ◽  
Bálint Németh
Keyword(s):  
Expert System ◽  
Electric Field ◽  
High Voltage ◽  
Low Frequency ◽  
Power Line ◽  
Power Lines ◽  
Design Parameters ◽  
Monitoring Methods ◽  
Limit Value ◽  
Potential Applications

Exceeding the electric field’s limit value is not allowed in the vicinity of high-voltage power lines because of both legal and safety aspects. The design parameters of the line must be chosen so that such cases do not occur. However, analysis of several operating power lines in Europe found that the electric field strength in many cases exceeds the legally prescribed limit for the general public. To illustrate this issue and its importance, field measurement and finite element simulation results of the low-frequency electric field are presented for an active 400 kV power line. The purpose of this paper is to offer a new, economical expert system based on dynamic line rating (DLR) that utilizes the potential of real-time power line monitoring methods. The article describes the expert system’s strengths and benefits from both technical and financial points of view, highlighting DLR’s potential for application. With our proposed expert system, it is possible to increase a power line’s safety and security by ensuring that the electric field does not exceed its limit value. In this way, the authors demonstrate that DLR has other potential applications in addition to its capacity-increasing effect in the high voltage grid.

Comparison of electric field exposure measurement methods under power lines

2013 ◽  
Vol 158 (2) ◽  
pp. 221-223 ◽  
Author(s):  
L. Korpinen ◽  
H. Kuisti ◽  
H. Tarao ◽  
R. Paakkonen ◽  
J. Elovaara
Keyword(s):  
Electric Field ◽  
Measurement Methods ◽  
Power Lines ◽  
Exposure Measurement ◽  
Field Exposure

Study of the Shielding Ability of Mesh Metal Materials from the Electromagnetic Field of Industrial Frequency Power Lines in Urban Environments

2021 ◽  
Vol 25 (2) ◽  
pp. 28-33
Author(s):  
N.A. Litvinova ◽  
I.S. Kyrie
Keyword(s):  
Electromagnetic Field ◽  
Electric Field ◽  
Urban Environments ◽  
Residential Facilities ◽  
Power Lines ◽  
Iron Aluminum ◽  
Metal Materials ◽  
Shielding Material ◽  
Frequency Power ◽  
Industrial Frequency

The results of studies of the practice of use in the construction of residential facilities located next to power lines, mesh metal materials, which have the shielding ability On the example of mesh metal materials (iron, aluminum, copper) used as a shielding material together with the roof of a building and in external walls, indicators reflecting the effectiveness of electromagnetic shielding are obtained. Also, according to the results of the study, it was found that when shielding an electric field of industrial frequency, it is important to take into account not only the material from which the screen is made, but also its.

Stray electric field energy harvesting technology using MEMS switch from insulated AC power lines

2014 ◽  
Vol 50 (17) ◽  
pp. 1236-1238 ◽  
Author(s):  
Hoseong Kim ◽  
Dongkil Choi ◽  
Sungmin Gong ◽  
Kyungjin Park
Keyword(s):  
Energy Harvesting ◽  
Electric Field ◽  
Power Lines ◽  
Field Energy ◽  
Mems Switch ◽  
Ac Power

scholarly journals Adaptation of power lines fault location methods to voltage characteristics deviations

2019 ◽  
Vol 139 ◽  
pp. 01042
Author(s):  
Mixail Obalin ◽  
Georgij Majstrenko
Keyword(s):  
Fault Location ◽  
Supply Voltage ◽  
Power Grid ◽  
Line Length ◽  
Power Line ◽  
Power Lines ◽  
Normal Operation ◽  
Voltage Unbalance ◽  
Error Distributions ◽  
Location Methods

The influence of voltage characteristics deviations, acceptable in normal operation of power grid, at power lines emergency state fault location methods precision is considered. The error distributions of emergency state fault location methods across power line length under frequency deviation, single rapid voltage changing and supply voltage unbalance variation are received. The way of emergency state fault location adaptation to voltage characteristics deviations is offered.

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