Long-term audible noise and radio noise performance from an operating 400 kV transmission line

1988 ◽  
Vol 3 (4) ◽  
pp. 1842-1846 ◽  
Author(s):  
C. Larsson ◽  
B. Hallberg ◽  
S. Israelsson
Keyword(s):  
Transmission Line ◽  
Noise Performance ◽  
Radio Noise

Long Term Audible Noise and Radio Noise Performance of American Electric Power's Operating 765 KV Lines

1979 ◽  
Vol PAS-98 (6) ◽  
pp. 1853-1859 ◽  
Author(s):  
N. Kolcio ◽  
J. DiPlacido ◽  
R. Haas ◽  
D. Nichols
Keyword(s):  
Noise Performance ◽  
Radio Noise

Long-Term Averages of Globally-Measured ELF/VLF Radio Noise

1992 ◽  
Author(s):  
M. M. Bowen ◽  
A. C. Fraser-Smith ◽  
P. R. McGill
Keyword(s):  
Radio Noise

scholarly journals Simulasi Pengaruh Variasi Konduktor Berkas Terhadap Gangguan Berisik Dan Radio Interferensi Pada Saluran Udara Tegangan Ekstra Tinggi 275kV

2020 ◽  
Vol 17 (2) ◽  
pp. 139
Author(s):  
Sonong Sonong ◽  
Herman Nawir ◽  
Fitrawati Suharti ◽  
Insan Kamil
Keyword(s):  
Transmission Line ◽  
High Voltage ◽  
Noise Level ◽  
Voltage Drop ◽  
Radio Interference ◽  
Radio Noise ◽  
Noise Interference ◽  
Design Guide ◽  
Extra High Voltage ◽  
Maximum Limit

The use of extra-high voltage lines can increase efficiency and reduce voltage drop but cause corona generation. Corona that occurs increases channeling losses and causes disruption to the environment in the form of Audible Noise (AN) and Radio Interference (RI). Audible Noise (AN) and Radio Interference (RI) that are too large will disturb the community around the transmission line. The use of a bundle conductor is a way to reduce the risk of corona. This paper discusses the effect of variations in the bundle conductor on noise interference and radio interference in 275kV extra-high-voltage air lines (SUTET). The types of variations include variations in the number of beams, variations in the distance between sub-conductors, and variations in diameter of the conductor. Next, the Audible Noise (AN) and Radio interference (RI) values are calculated for the Latuppa (Palopo) - Pomana channel planning. The results of the calculation of AN and RI values on SUTET 275kV are still included as safe criteria because the value is still below the criteria limits of Perry and SPLN 46-1-1981 concerning the Noise Level Limitation Guidelines and the IEEE Radio Noise Design Guide about the maximum limit of RI.

scholarly journals Noise Performance and Long-Term Stability of Near- and Mid-IR Gas-Filled Fiber Raman Lasers

2021 ◽  
pp. 1-1
Author(s):  
Yazhou Wang ◽  
Abubakar Adamu ◽  
Manoj Kumar Dasa ◽  
Jose Enrique Antonio-Lopez ◽  
Md Selim Habib ◽  
...  
Keyword(s):  
Noise Performance ◽  
Term Stability ◽  
Long Term Stability ◽  
Raman Lasers

scholarly journals Monitoring System of Transmission Line in Mountainous Area Based on LPWAN

Energies ◽  
2020 ◽  
Vol 13 (18) ◽  
pp. 4898
Author(s):  
Han Zeng ◽  
Pengqi Zuo ◽  
Fangming Deng ◽  
Pei Zhang
Keyword(s):  
Transmission Line ◽  
Monitoring System ◽  
Transmission Lines ◽  
Online Monitoring ◽  
High Reliability ◽  
Mountainous Area ◽  
Area Network ◽  
Wide Area Network ◽  
Mountainous Areas

In light of the difficulty of the inspection and maintenance of a transmission line condition monitoring system in remote mountainous areas, this paper proposes a long-term online monitoring scheme based on a low power wide area network (LPWAN). Considering different failure rates, three monitoring periods of transmission lines in mountainous areas are proposed. An online monitoring framework of transmission lines in mountainous areas was designed based on long range radio (LoRa) and a cellular mobile network, and a dynamic group network model of LoRa was established. The multi-objective particle swarm optimization algorithm can be used to optimize the energy and delay of the system, and then the suitable working mode for the three monitoring periods can be obtained. The simulation results showed that the minimum packet loss rate of the system could be less than 1%, the energy consumption of the system was 80% lower than the existing monitoring system, and the service life of the system can reach 15.13 years under the normal failure rate. Compared with the existing schemes, the proposed work shows the advantages of high reliability transmission, low cost and long-term monitoring, which is especially for transmission line monitoring in mountainous areas.

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