The application of fault location system for 220kV overhead power line in China

2012 ◽  
Author(s):  
H. Yuasa ◽  
S. Niihara ◽  
M. Nakanishi ◽  
Y. Chen ◽  
T. Imagawa ◽  
...  
Keyword(s):  
Fault Location ◽  
Power Line ◽  
Location System ◽  
Overhead Power Line

scholarly journals Analysis of influence of external atmospheric factors on the accuracy of fault location on overhead power lines

2020 ◽  
Vol 178 ◽  
pp. 01057
Author(s):  
Olga Ahmedova ◽  
Anatoliy Soshinov ◽  
Natalia Shevchenko
Keyword(s):  
Fault Location ◽  
Short Circuit ◽  
Power Line ◽  
Power Lines ◽  
Electrical Grids ◽  
Short Circuits ◽  
Atmospheric Factors ◽  
Overhead Power Lines ◽  
Overhead Power Line ◽  
Emergency Mode

Devices of fault location are widespread in electrical grids. In overhead power lines of voltages of 10 kV and higher, such devices are based on measurements of parameters in emergency mode. These devices can be divided into two main groups: designed to determine fault location of short circuits and of ground short circuit. In both cases, when detecting fault location, analyzed are not only the current and voltage parameters at the accident time, but also the parameters of overhead power line. When analyzing equivalent circuits of power lines, approximate tabular values of direct and quadrature parameters are used. It was revealed, that the line parameters are significantly affected by external atmospheric factors: ambient temperature, soil moisture, wind strength and direction, ice formation, etc. To accurately determine the fault location, it is necessary to evaluate the influence of these factors on the linear parameters of the overhead line. The paper presents analysis of the influence of changes in atmospheric factors on parameters of overhead power line. A methodology for calculating the operation setpoints of the device for fault location in power line is given.

Calculating the Capacitive Current Flowing Off from an Overhead Power Line Energized with the Voltage Induced by the Influencing Overhead Line Located at Different Distances from the Former

Vestnik MEI ◽  
2018 ◽  
Vol 3 (3) ◽  
pp. 37-43
Author(s):  
Ilya V. Korolev ◽  
◽  
Olga S. Shcherbacheva ◽  
Victor T. Medvedev ◽  
Dmitriy A. Burdyukov ◽  
...  
Keyword(s):  
Power Line ◽  
Overhead Line ◽  
Capacitive Current ◽  
Overhead Power Line

Comparison of electromagnetic fields emitted by typical overhead power line towers

2020 ◽  
Author(s):  
Jozef Bendík ◽  
Matej Cenký ◽  
Žaneta Eleschová ◽  
Anton Beláň ◽  
Boris Cintula ◽  
...  
Keyword(s):  
Electromagnetic Fields ◽  
Power Line ◽  
Overhead Power Line
Sign in / Sign up

Export Citation Format

Share Document