Effects of the rainfall rate on corona onset voltage gradient of bundled conductors in alternating current transmission lines in high-altitude areas

2021 ◽  
Vol 200 ◽  
pp. 107461
Author(s):  
Huang Shilong ◽  
Ye Zijian ◽  
Liu Yunpeng ◽  
Yan Xiaoliang ◽  
Liu Chen ◽  
...  
Keyword(s):  
High Altitude ◽  
Transmission Lines ◽  
Alternating Current ◽  
Rainfall Rate ◽  
Voltage Gradient ◽  
Current Transmission ◽  
Onset Voltage

The science of alternating current-induced corrosion: a review of literature on pipeline corrosion induced due to high-voltage alternating current transmission pipelines

2020 ◽  
Vol 38 (6) ◽  
pp. 463-472
Author(s):  
Ajit Kumar Thakur ◽  
Adarsh Kumar Arya ◽  
Pushpa Sharma
Keyword(s):  
High Voltage ◽  
Transmission Lines ◽  
Significant Risk ◽  
Alternating Current ◽  
Review Of Literature ◽  
Transmission Networks ◽  
Current Transmission ◽  
Pipeline Networks ◽  
Major Factors ◽  
Pipeline Corrosion

AbstractThe state of art in alternating current (AC)-induced corrosion in pipelines is reviewed. Growing pipeline networks and their co-location with high-voltage (HV) transmission networks have brought into focus the issue of induced AC corrosion on the pipeline networks. Induced AC corrosion may quickly and severely affect the integrity of pipeline networks, especially considering that a number of such pipelines are transporting huge quantities of hazardous fluids. Any breach in pipeline integrity due to AC corrosion may result in disastrous consequences. In the last 30 years, it has been established that the induced AC corrosion can affect the buried pipeline integrity severely. During operations, the resistive as well as inductive coupling with transmission lines pose a significant risk of pipeline corrosion. The literature is reviewed to put together various issues and factors responsible for AC-induced corrosion in pipelines. The various publications on induced AC corrosion are reviewed to identify characteristics of AC-induced corrosion and major factors that determine the severity and impact of AC-induced corrosion. The areas have been identified wherein scope exists for additional studies on AC corrosion.

scholarly journals Low frequency electric field radiation level around high-voltage transmission lines and impact of increased voltage values on the corona onset voltage gradient

2018 ◽  
Vol 33 (2) ◽  
pp. 201-207 ◽  
Author(s):  
Adnan Carsimamovic ◽  
Adnan Mujezinovic ◽  
Zijad Bajramovic ◽  
Irfan Turkovic ◽  
Milodrag Kosarac
Keyword(s):  
Electric Field ◽  
High Voltage ◽  
Transmission Lines ◽  
Low Frequency ◽  
Voltage Gradient ◽  
Radiation Level ◽  
Field Radiation ◽  
Onset Voltage ◽  
Frequency Electric Field ◽  
High Voltage Transmission

In this article the summary of measurement and calculation values of low frequency electric field radiation around the high-voltage transmission lines and impact of the increased voltage values on the AC corona onset voltage gradient are presented. The measurements of the low frequency electric field radiation level were performed under the 400 kV transmission lines of horizontal configuration with standard and compact dimensions. In all cases analyzed in this article, the measurements are performed in the middle of the span, because at this point the conductors are closest to the ground. The analysis in this article has been initiated by the increased voltage values of long duration that have been registered in nodes of the 400 kV network in Bosnia and Herzegovina and the neighbouring countries during the last years. The calculation of the low frequency electric field radiation of the different configuration of the high-voltage transmission lines will be useful for determining the non-ionization radiation exposure levels of the general public in the future as well as to determine their impact on the AC corona onset voltage gradient.

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