Algorithm of object localization applied on high-voltage power transmission lines based on line stereo matching

2021 ◽  
Vol 60 (02) ◽  
Author(s):  
Fashuai Tang ◽  
Qi Gao ◽  
Zongzhan Du
Keyword(s):  
High Voltage ◽  
Transmission Lines ◽  
Stereo Matching ◽  
Power Transmission ◽  
Object Localization ◽  
Power Transmission Lines ◽  
On Line

scholarly journals Do High-Voltage Power Transmission Lines Affect Forest Landscape and Vegetation Growth: Evidence from a Case for Southeastern of China

Forests ◽  
2019 ◽  
Vol 10 (2) ◽  
pp. 162 ◽  
Author(s):  
Xiang Li ◽  
Yuying Lin
Keyword(s):  
High Voltage ◽  
Transmission Lines ◽  
Vegetation Index ◽  
Normalized Difference Vegetation Index ◽  
Power Transmission ◽  
Mesh Size ◽  
Forest Landscape ◽  
Power Transmission Lines ◽  
Vegetation Growth ◽  
Landscape Types

The rapid growth of the network of high-voltage power transmission lines (HVPTLs) is inevitably covering more forest domains. However, no direct quantitative measurements have been reported of the effects of HVPTLs on vegetation growth. Thus, the impacts of HVPTLs on vegetation growth are uncertain. Taking one of the areas with the highest forest coverage in China as an example, the upper reaches of the Minjiang River in Fujian Province, we quantitatively analyzed the effect of HVPTLs on forest landscape fragmentation and vegetation growth using Landsat imageries and forest inventory datasets. The results revealed that 0.9% of the forests became edge habitats assuming a 150 m depth-of-edge-influence by HVPTLs, and the forest plantations were the most exposed to HVPTLs among all the forest landscape types. Habitat fragmentation was the main consequence of HVPTL installation, which can be reduced by an increase in the patch density and a decrease in the mean patch area (MA), largest patch index (LPI), and effective mesh size (MESH). In all the landscape types, the forest plantation and the non-forest land were most affected by HVPTLs, with the LPI values decreasing by 44.1 and 20.8%, respectively. The values of MESH decreased by 44.2 and 32.2%, respectively. We found an obvious increasing trend in the values of the normalized difference vegetation index (NDVI) in 2016 and NDVI growth during the period of 2007 to 2016 with an increase in the distance from HVPTL. The turning points of stability were 60 to 90 meters for HVPTL corridors and 90 to 150 meters for HVPTL pylons, which indicates that the pylons have a much greater impact on NDVI and its growth than the lines. Our research provides valuable suggestions for vegetation protection, restoration, and wildfire management after the construction of HVPTLs.

scholarly journals Remote Monitoring of Joints Status on In-Service High-Voltage Overhead Lines

Energies ◽  
2019 ◽  
Vol 12 (6) ◽  
pp. 1004 ◽  
Author(s):  
Carlo Olivieri ◽  
Francesco de Paulis ◽  
Antonio Orlandi ◽  
Giorgio Giannuzzi ◽  
Roberto Salvati ◽  
...  
Keyword(s):  
High Voltage ◽  
Transmission Lines ◽  
Remote Monitoring ◽  
Power Transmission ◽  
Measurement Data ◽  
Time Domain Reflectometry ◽  
Overhead Line ◽  
Voltage Transformer ◽  
Remote Monitoring System ◽  
On Line

This work presents the feasibility study of an on-line monitoring technique aimed to discover unwanted variations of longitudinal impedance along the line (also named “impedance discontinuities”) and, possibly, incipient faults typically occurring on high voltage power transmission lines, like those generated by oxidated midspan joints or bolted joints usually present on such lines. In this paper, the focus is placed on the application and proper customization of a technique based on the time-domain reflectometry (TDR) technique when applied to an in-service high-voltage overhead line. An extensive set of numerical simulations are provided in order to highlight the critical points of this particular application scenario, especially those that concern the modeling of both the TDR signal injection strategy and the required high-voltage coupling devices, and to plan a measurement activity. The modeling and simulation approach followed for the study of either the overhead line or the on-line TDR system is fully detailed, discussing three main strategies. Furthermore, some measurement data that were used to characterize the specific coupling device selected for this application at high frequency—that is, a capacitive voltage transformer (CVT)—are presented and discussed too. This work sets the basic concepts underlying the implementation of an on-line remote monitoring system based on reflectometric principles for in-service lines, showing how much impact is introduced by the high-voltage coupling strategy on the amplitude of the detected reflected voltage waves (also named “voltage echoes”).

Synthesis of MnO2 nanoparticles and their effective utilization as UV protectors for outdoor high voltage polymeric insulators used in power transmission lines

2016 ◽  
Vol 18 (48) ◽  
pp. 32876-32890 ◽  
Author(s):  
Dipankar Ghosh ◽  
Subhendu Bhandari ◽  
Dipak Khastgir
Keyword(s):  
Uv Radiation ◽  
High Voltage ◽  
Transmission Lines ◽  
Power Transmission ◽  
Uv Protection ◽  
Power Transmission Lines ◽  
Effective Utilization ◽  
Mno2 Nanoparticles ◽  
Polymeric Insulators ◽  
Outdoor Insulators

The mechanism of the UV protection of polymers by MnO2 where UV radiation is absorbed by MnO2 particles present in the PDMS/EVA–MnO2 composite used in high voltage outdoor insulators for power transmission lines.

scholarly journals THE ANALYSIS OF LANDS IN SECURITY ZONES OF HIGH-VOLTAGE POWER LINES (POWER LINE) ON THE EXAMPLE OF THE FERGANA REGION

2020 ◽  
pp. 55-58
Author(s):  
Abdullayev Ibrohim Numanovich ◽  
Marupov Azizxon Abbosxonovich
Keyword(s):  
Land Use ◽  
Real Estate ◽  
High Voltage ◽  
Transmission Lines ◽  
Power Transmission ◽  
Negative Impact ◽  
Time Frame ◽  
Power Lines ◽  
Power Transmission Lines ◽  
High Voltage Power Lines

Practice shows that the lack or late receipt of information with special conditions for the use of territories often has a negative impact not only on the budget and time frame for the construction of a real estate facility, but also on the fate of the built facility in general. The protection areas of underground and above-ground engineering communications play an important role for the future in land use. And also, when using these lands for agricultural needs, with the correct organization of cadastral relations represents the relevance of the issue under study. In the present, as an example, a section of high-voltage power transmission lines (power lines) of 1 km length is presented. KEY WORDS: security zones, land plot, information about zones, high-voltage zones, power transmission lines, pipelines, gas pipelines, bonality score, engineering networks, construction of buildings and structures.

scholarly journals Quantitative Analysis of Plant Growth Exposed to Electric Fields

2015 ◽  
Vol 16 (2) ◽  
pp. 207
Author(s):  
Hussein Ahmad ◽  
Mohd Hafizi Ahmad ◽  
Noor 'Aliaa Awang ◽  
Izzah Hazirah Zakaria
Keyword(s):  
Quantitative Analysis ◽  
Electric Field ◽  
Electric Fields ◽  
High Voltage ◽  
Transmission Lines ◽  
Power Transmission ◽  
Germination Rate ◽  
Power Transmission Lines ◽  
High Power Transmission ◽  
Electromagnetic Radiations

<p>Electromagnetic radiations present in the environment has a profound effect on the growth of vegetable plant primarily grown under the high power transmission lines. The high electric field generated due to ultra high voltage causes the increase and reduction in the size of the plants. Numerous research have been carried out to investigate the effect of electric field on the plants. However, the knowledge in term of quantitative analysis on the effect of electric field on the growth of vegetables is not entirely understood. Thus, this paper presents a study conducted to investigate the effect of high voltage DC electric fields on the young vegetables growth namely ‘Choy Sam’ and bean sprout. The experimental setup was designed which composed of two parallel plate electrodes. This research was focused on the percentage of germination and growing rate of young vegetables. The growth of the young vegetables during exposure was calculated by using statistical methods. The analysis of the results showed that the electric fields and the electric fields treated water have influenced the germination rate and height of stems of both young vegetables causing the increase in stem height.</p><p> </p>

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