scholarly journals An IoT-Based System for Monitoring the Health of Guyed Towers in Overhead Power Lines

Sensors ◽  
2021 ◽  
Vol 21 (18) ◽  
pp. 6173
Author(s):  
Claudio Ferreira Dias ◽  
Juliane Regina de Oliveira ◽  
Lucas D. de Mendonça ◽  
Larissa M. de Almeida ◽  
Eduardo R. de Lima ◽  
...  
Keyword(s):  
Remote Monitoring ◽  
Mesh Network ◽  
Lossy Networks ◽  
Multiple Sensors ◽  
Stay Cables ◽  
Preventive Actions ◽  
Multiple Input ◽  
Guyed Towers ◽  
Overhead Power Lines ◽  
Overhead Power Line

The collapse of overhead power line guyed towers is one of the leading causes of power grid failures, subjecting electricity companies to pay considerable, high-value fines. In this way, the current work proposes a novel and complete framework for the remote monitoring of mechanical stresses in guyed towers. The framework method comprises a mesh network for data forwarding and neural networks to improve the performance of Low-Power and Lossy Networks. The method also considers the use of multiple sensors in the sensor fusion technique. As a result, the risk of collapse of guyed cable towers reduces, due to the remote monitoring and preventive actions promoted by the framework. Furthermore, the proposed method uses multiple input variable fusions, such as accelerometers and tension sensors, to estimate the tower’s displacement. These estimations help address the structural health of the tower against failures (i.e., loosening of the stay cables, displacement, and vibrations) that can cause catastrophic events, such as tower collapse or even cable rupture.

scholarly journals Evaluation of Multivariable Modeling Methods for Monitoring the Health of Guyed Towers in Overhead Power Lines

Sensors ◽  
2021 ◽  
Vol 21 (18) ◽  
pp. 6144
Author(s):  
Alexandre Schalch Mendes ◽  
Janito Vaqueiro Ferreira ◽  
Pablo Siqueira Meirelles ◽  
Eurípedes Guilherme de Oliveira Nóbrega ◽  
Eduardo Rodrigues de Lima ◽  
...  
Keyword(s):  
Transmission Line ◽  
Normal Limit ◽  
Power Transmission ◽  
Central Position ◽  
Power Transmission Line ◽  
Relevant Research ◽  
Average Value ◽  
Stay Cables ◽  
Guyed Towers ◽  
Overhead Power Lines

This article proposes a methodology for monitoring the structural stability of each tower of an electric power transmission line through sensor measurements which estimates the different situations that may indicate the need for intervention to prevent the structure collapsing. The extended Kalman filter was adopted to predict the failures, considering sensor fusion techniques such as the displacements of the upper central position of the tower above certain limits. The load of the stay cables is calculated from the natural frequencies, which are determined by the accelerometers connected to the cables. The average value of these forces, which must be higher than a normal limit, were calculated to predict a failure. All guyed towers of a power transmission line thousands of kilometers long will be individually monitored considering the methodology described in this study, which makes this article one of the first relevant research studies in this area. Typically, guyed towers must often be manually inspected to ensure that the stay cables have acceptable pretension to prevent a lack of stability in the transmission line towers.

scholarly journals STUDY OF OVERHEAD POWER LINE CORRIDORS ON THE TERRITORY OF PSKOV REGION (RUSSIA) BASED ON SATELLITE SOUNDING DATA

2019 ◽  
Vol 1 ◽  
pp. 164
Author(s):  
Sergei Mikhalap ◽  
Sergei Trashenkov ◽  
Vera Vasilyeva
Keyword(s):  
Radar Data ◽  
National Standards ◽  
Multispectral Images ◽  
Synthetic Aperture Radar Data ◽  
Local Topography ◽  
Pskov Region ◽  
Pass Through ◽  
Overhead Power Lines ◽  
Overhead Power Line ◽  
Dynamics Of Vegetation

Overhead power lines (OPL) form the basis of a power grid. Reliable energy supply depends on no-failure operation of these long-length elements of energy infrastructure. More than 12,000 km out of 45,000 km of OPL in Pskov region (Russia) pass through forests. This study investigates the possibilities of using satellite-sensing data to assess the conditions of corridors for OPL with different voltage levels. Authors evaluated compliance of actual data with requirements of national standards. The dynamics of vegetation and local topography based on synthetic aperture radar data and multispectral images were taken into account.

scholarly journals Reduction in the Electromagnetic Interference Generated by AC Overhead Power Lines on Buried Metallic Pipelines with Screening Conductors

Electricity ◽  
2021 ◽  
Vol 2 (3) ◽  
pp. 316-329
Author(s):  
Arturo Popoli ◽  
Leonardo Sandrolini ◽  
Andrea Cristofolini
Keyword(s):  
Electromagnetic Interference ◽  
Numerical Study ◽  
Unit Length ◽  
Soil Surface ◽  
Power Lines ◽  
Induced Voltage ◽  
Element Analysis ◽  
Cylindrical Steel ◽  
Overhead Power Lines ◽  
Overhead Power Line

This paper presents a numerical study on the reduction in the voltage and current induced on a 13.5 km buried metallic pipeline by an overhead power line. The mitigation effectiveness of different configurations and cross-section shapes of screening conductors is computed by means of a methodology that combines a 2D Finite Element Analysis with circuital analysis. A 35.72% reduction of the maximum induced voltage is obtained when 4 cylindrical steel screening conductors with 8 mm radius are buried 0.25m below the soil surface, along the pipeline path. The maximum induced pipeline current is reduced by 26.98%. A parametric study is also performed, to assess the influence of the per-unit-length admittance to earth of the screening conductors on the mitigation efficacy. The results show that screening conductors may help in reducing the inductive coupling between overhead power lines and buried metallic pipelines, and that the assumption of perfectly insulated screening conductors leads to an underestimation of the produced mitigation effect.

Mathematical model of a remote monitoring module by mechanical impact measuring channels on an overhead power line

2021 ◽  
Vol 2 ◽  
pp. 41-45
Author(s):  
Vitaly Akulichev ◽  
Valery Nepomnyashchy ◽  
Sergey Visich ◽  
Mikhail Panarin ◽  
Anna Maslova
Keyword(s):  
Mathematical Model ◽  
Power Supply ◽  
Remote Monitoring ◽  
Power Line ◽  
Electric Power Supply ◽  
Mechanical Impact ◽  
Half Wave ◽  
Wire Vibration ◽  
Monitoring Module ◽  
Overhead Power Line

This paper focuses on developing a mathematical model of a remote monitoring module by mechanical impact measuring channels on an overhead power line.The mathematical model simulatessag angle monitoring,wire break, wire vibration, and conductor gallopingprovided that one half-wave is forming at one power line span. The proposedmathematical model has been implemented as part of control tools at an electric power supply company.

scholarly journals Inclinometric method for determining the mechanical state of an overhead power transmission line

2019 ◽  
Vol 124 ◽  
pp. 05022
Author(s):  
M.F. Sadykov ◽  
D.A. Yaroslavsky ◽  
D.A. Ivanov ◽  
V.A. Tyurin ◽  
T.G. Galiyeva ◽  
...  
Keyword(s):  
Transmission Line ◽  
Power Line ◽  
Power Lines ◽  
Wire Temperature ◽  
Overhead Transmission Line ◽  
The Status ◽  
Control Devices ◽  
The Wire ◽  
Overhead Power Lines ◽  
Overhead Power Line

Mechanical deformations when a wire is stretched causes its rotation around its axis, which allows obtaining additional information about the wire behavior in an overhead transmission line and considering it no longer as a group of sections from one span but as a whole interconnected section with redistribution of mechanical loads between spans. To determine the tensile strength of wire by its torsion, a method for determining the mechanical parameters of an overhead transmission line was developed. It is based on the inclinometric method and the theory of force calculation of steel ropes. This technique takes into account the torsion, the angle of inclination and the wire temperature. The technique is implemented in the system for monitoring the status of overhead power lines. It takes into account the torsion angle of the wire and helps to prevent emergencies on the overhead power line by determining the tensile strength of the wire, checking for defects in wires of the overhead power line and defects in the suspension armature. The monitoring system includes control devices, data collection and data processing center, a dispatcher software package. Control devices are installed directly on the wire/ground wire of an overhead power line and are used to measure the angle of rotation, the angle of inclination and the wire temperature. The data collection and data processing station processes them according to the developed methodology in specialized software. The system for monitoring the status of overhead power lines based on the inclinometric method helps to prevent emergencies and reduce the economic costs of maintaining and restoring overhead power lines.

scholarly journals COMPOSITE SUPPORTS OF OVERHEAD POWER LINES

2020 ◽  
Author(s):  
Kostiantyn Kartalapov
Keyword(s):  
Power Line ◽  
Power Lines ◽  
Restoration Work ◽  
Overhead Power Lines ◽  
Overhead Power Line

The article considers the feasibility of using composite supports during the replacement of overhead power lines, analyzes the relevance of these technologies. The advantages of composite overhead power line towers for construction, modernization and restoration work over traditional wooden and metal towers are substantiated.

scholarly journals Analysis of influence of external atmospheric factors on the accuracy of fault location on overhead power lines

2020 ◽  
Vol 178 ◽  
pp. 01057
Author(s):  
Olga Ahmedova ◽  
Anatoliy Soshinov ◽  
Natalia Shevchenko
Keyword(s):  
Fault Location ◽  
Short Circuit ◽  
Power Line ◽  
Power Lines ◽  
Electrical Grids ◽  
Short Circuits ◽  
Atmospheric Factors ◽  
Overhead Power Lines ◽  
Overhead Power Line ◽  
Emergency Mode

Devices of fault location are widespread in electrical grids. In overhead power lines of voltages of 10 kV and higher, such devices are based on measurements of parameters in emergency mode. These devices can be divided into two main groups: designed to determine fault location of short circuits and of ground short circuit. In both cases, when detecting fault location, analyzed are not only the current and voltage parameters at the accident time, but also the parameters of overhead power line. When analyzing equivalent circuits of power lines, approximate tabular values of direct and quadrature parameters are used. It was revealed, that the line parameters are significantly affected by external atmospheric factors: ambient temperature, soil moisture, wind strength and direction, ice formation, etc. To accurately determine the fault location, it is necessary to evaluate the influence of these factors on the linear parameters of the overhead line. The paper presents analysis of the influence of changes in atmospheric factors on parameters of overhead power line. A methodology for calculating the operation setpoints of the device for fault location in power line is given.

scholarly journals Exploring Internet of Things (IoT) in Safety and Security Environment

2017 ◽  
Author(s):  
Indrani Palanisamy
Keyword(s):  
Internet Of Things ◽  
Work Environment ◽  
Remote Monitoring ◽  
Technological Development ◽  
New Technology ◽  
Preventive Measure ◽  
The Internet ◽  
Multiple Sensors ◽  
Keywords Internet ◽  
The Internet Of Things

  Internet of things (IoT) is new technology aimed to achieve the goals of daily life because every transaction via the Internet and we have to live with it. The aim of this study is to enhance the security and safety objectives to virtually monitor the organizations before the problem occurs as a preventive measure by implementing new monitoring technology using multiple sensors. Internet of things is a new technology in security and safety environment. In this study the implementation of this new technique will focus on the Office of Security and Safety Affairs, which allows them to monitoring through the screen about the work environment in the company and inform the management about the incident such as fire or suffocation in a room by sending an email and also by notification in the screen. In each room, we have implemented sensors and through which the data are sent to the servers. This technological development contributes to the organizational growth by controlling any remote device and to take quick decisions in an unforeseen event and provide proper protection during such occurrence. This technological evolution in the name of the Internet of things (IoT) in our regular work environment helps to increase remote monitoring and roaming capabilities. This exploratory study based solution is implemented to use new things in the raspberry pi3 device and the sensor that is connected through the internet. This Sensor will monitor occurring in their location and the data is sent to the server in order to monitor security and safety of the organization from control Centre located remotely. This technology also enables communication with the Office of Security and Safety notified about any event and can send an email alert or notification through their Monitoring screen. This study is an innovative advent with regard to safety and security, helping to communicate with the human and the network. Internet of Things is nearly the things that can control remotely over the internet. This technology helps companies that need the work environment to integrate with the Internet of Things, which will help them through it in safety and security matters.     Keywords: Internet of Things (IoT), Remote Monitoring, Safety & Security, Sensors.

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