Development and Control of an Autonomously Obstacle-Navigation Inspection Robot for Extra-High Voltage Power Transmission Lines

2006 ◽  
Author(s):  
Ludan Wang ◽  
Lijin Fang ◽  
Hongguang Wang ◽  
Mingyang Zhao
Keyword(s):  
High Voltage ◽  
Transmission Lines ◽  
Power Transmission ◽  
Power Transmission Lines ◽  
Inspection Robot ◽  
Extra High Voltage ◽  
And Control

scholarly journals Mathematical model of a part of an opened extra-high voltage electrical grid

2019 ◽  
Vol 84 ◽  
pp. 02005
Author(s):  
Marek Lis ◽  
Andriy Chaban ◽  
Andrzej Szafraniec ◽  
Radosław Figura ◽  
Vitaliy Levoniuk
Keyword(s):  
Mathematical Model ◽  
High Voltage ◽  
Transmission Lines ◽  
Power Transmission ◽  
Transient Processes ◽  
Power Transmission Lines ◽  
Ongoing Research ◽  
Electrical Grid ◽  
Interdisciplinary Approaches ◽  
Extra High Voltage

In the paper, based on interdisciplinary approaches to modeling, a mathematical model of a part of an opened extra-high voltage electrical grid, which key elements are two long power transmission lines with distributed constants is presented. Within this framework the analysis of transient processes in power transmission lines in a single-line arrangement is carried out. The results of transient processes are displayed by means of figures; they are under ongoing research.

scholarly journals INFLUENCE ESTIMATION OF ASYMMETRY EXTRA HIGH VOLTAGE TRANSMISSION LINE ON DETERMINATION OF COMPENSATING REACTOR PARAMETERS

2020 ◽  
Vol 2020 (57) ◽  
pp. 15-25
Author(s):  
Vladislav Kuchanskyy ◽  
◽  
Denys Malakhatka ◽  
Keyword(s):  
Transmission Line ◽  
High Voltage ◽  
Transmission Lines ◽  
Single Phase ◽  
Power Transmission ◽  
Power Transmission Lines ◽  
High Voltage Transmission Line ◽  
Longitudinal Asymmetry ◽  
High Voltage Transmission ◽  
Extra High Voltage

The article shows the urgency of the problem of studying resonant processes in extra high voltage power lines. The research of processes in extra high voltage power transmission lines is carried out to develop and implement measures to prevent overvoltages. Resonant overvoltages arising because of open phase modes of operation of the extra high voltage transmission line are considered. The paper shows the influence of the levels of longitudinal asymmetry on the calculation of the resistances of compensating reactors to reduce the values of overvoltages in the pause of single-phase automatic reclose. The degree of influence of the wire transposition scheme on the choice of the resistance of the compensation reactor and on the values of resonant overvoltages in the cycle of single-phase automatic reclose is considered. Estimation of asymmetry coefficients for different transposition schemes is performed. To select the resistance of the compensation reactor, the data of the existing high-voltage transmission lines of 750 kV were taken. Recommendations for the implementation of measures to prevent and limit resonant overvoltages are given. The current theoretical and practical problems of operation of the extra high voltage power line are considered and the ways of further research are shown. References 14, figures 5, tables 2.

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