Corona power loss determination on multi-phase power transmission lines

Power transmission network system plays an important role in distributing power, especially in 150 kV power transmission lines. In 2013, the was a change in term of conductor type in in 150 kV transmission lines of Garuda Sakti – Balai Pungut, from ACSR to ACCC, because of the growing number of power plants in Riau and power distribution in every conductor supplying higher current, when given higher current, ACCC conductor is capable of transmitting power twice the ACSR conductor. The single line diagram of UPT Pekanbaru, data from power station (GI) Garuda Sakti – Balai Pungut, conductor data and load data are all data necessary for the study and calculation on ACCC conductor. The result shows that the amount of voltage drop power losses of ACCC conductor is 5.098 kV, while the power loss is 479,187 with the sagging value is 6.950 m, compared to the old conductor, the ACSR type, with the voltage drop of 7.517 kV, power loss of 828.863 kW, and the sagging value of 9.010 m, all measured in 150 kV power transmission lines of PT. PLN PERSERO UPT Pekanbaru.

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METHOD OF SYNTHESIS OF CLOSED-LOOP SYSTEMS OF ACTIVE SHIELDING MAGNETIC FIELD OF POWER TRANSMISSION LINES

Tekhnichna Elektrodynamika ◽

10.15407/techned2016.04.008 ◽

2016 ◽

Vol 2016 (4) ◽

pp. 8-10 ◽

Cited By ~ 1

Author(s):

B.I. Kuznetsov ◽

◽

A.N. Turenko ◽

T.B. Nikitina ◽

A.V. Voloshko ◽

...

Keyword(s):

Magnetic Field ◽

Transmission Lines ◽

Closed Loop ◽

Power Transmission ◽

Power Transmission Lines ◽

Closed Loop Systems ◽

Active Shielding

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THE ANALYSIS OF METHODS OF INCREASING OF THE ELECTRICAL POWER TRANSMISSION EFFICIENCY IN 330-750 kV MAIN POWER TRANSMISSION LINES

Scientific bulletin of the Tavria Agrotechnological State University ◽

10.31388/2220-8674-2019-1-21 ◽

2019 ◽

Vol 9 (1) ◽

Author(s):

�. �� ◽

◽

�. �� ◽

Keyword(s):

Transmission Lines ◽

Power Transmission ◽

Electrical Power ◽

Transmission Efficiency ◽

Power Transmission Lines

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

Energies ◽

10.3390/en14061561 ◽

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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