scholarly journals Analysis of HVDC Power Transmission Line with Unique Power Control Room

2017 ◽  
Vol 6 (1) ◽  
pp. 1465-1471
Keyword(s):  
Power Control ◽  
Transmission Line ◽  
Power Transmission ◽  
Power Transmission Line ◽  
Control Room ◽  
Unique Power

scholarly journals Analysis of Hvdc Power Transmission Line with Unique Power Control Room

2017 ◽  
Vol 16 (02) ◽  
pp. 28-37
Author(s):  
Sharad Chandra Rajpoot ◽  
Prashant Singh Rajpoot ◽  
Kishan Gupta
Keyword(s):  
Power Control ◽  
Transmission Line ◽  
Power Transmission ◽  
Power Transmission Line ◽  
Control Room ◽  
Unique Power

DEVELOPMENT OF A DEVICE FOR DIAGNOSTICS OF INSULATORS

2021 ◽  
Vol 3 (1) ◽  
pp. 080-084
Author(s):  
N. A. TERESCHENKO ◽  
◽  
M. A. KHOLMOV ◽  
V. Y. MIROSHNIK ◽  
K. I. NIKITIN ◽  
...  
Keyword(s):  
Transmission Line ◽  
Leakage Current ◽  
Power Transmission ◽  
Digital Signal ◽  
Power Transmission Line ◽  
Operating Voltage ◽  
Insulation Resistance ◽  
Control Room ◽  
Diagnostic Device ◽  
Overhead Power Transmission Line

The article proposes an invention that makes it possible to diagnose a damaged insulator under the operating voltage of an overhead power transmission line (OHL) by monitoring the leakage current. A prototype of a diagnostic device was made with which experiments were carried out. The leakage current taken from the shunt structure is converted into a digital signal for processing, transmission and further processing at the substation control room. The monitored value of the leakage current corresponds to the value of the insulation resistance of the insulator.

Stabilization of a Power Transmission Line Oscillations

2002 ◽  
Vol 29 (3-4) ◽  
pp. 9
Author(s):  
M. I. Kazakevitch ◽  
Ye. V. Horokhov ◽  
M. S. Khorol'sky ◽  
S. V. Turbin
Keyword(s):  
Transmission Line ◽  
Power Transmission ◽  
Power Transmission Line

scholarly journals Time-Multiplexed Self-Powered Wireless Current Sensor for Power Transmission Lines

Energies ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1561
Author(s):  
Hao Chen ◽  
Zhongnan Qian ◽  
Chengyin Liu ◽  
Jiande Wu ◽  
Wuhua Li ◽  
...  
Keyword(s):  
Energy Harvesting ◽  
Transmission Line ◽  
Transmission Lines ◽  
Power Transmission ◽  
Current Measurement ◽  
Current Sensor ◽  
Power Transmission Line ◽  
Power Transmission Lines ◽  
Current Sensing ◽  
Self Powered

Current measurement is a key part of the monitoring system for power transmission lines. Compared with the conventional current sensor, the distributed, self-powered and contactless current sensor has great advantages of safety and reliability. By integrating the current sensing function and the energy harvesting function of current transformer (CT), a time-multiplexed self-powered wireless sensor that can measure the power transmission line current is presented in this paper. Two operating modes of CT, including current sensing mode and energy harvesting mode, are analyzed in detail. Through the design of mode-switching circuit, harvesting circuit and measurement circuit are isolated using only one CT secondary coil, which eliminates the interference between energy harvesting and current measurement. Thus, the accurate measurement in the current sensing mode and the maximum energy collection in the energy harvesting mode are both realized, all of which simplify the online power transmission line monitoring. The designed time-multiplexed working mode allows the sensor to work at a lower transmission line current, at the expense of a lower working frequency. Finally, the proposed sensor is verified by experiments.

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