The Analysis and Research on Electromagnetic Radiation Pollution of High Voltage Transmission Line

2011 ◽  
Vol 374-377 ◽  
pp. 8-13
Author(s):  
Di Lu ◽  
Jian Xin Wang
Keyword(s):  
Electromagnetic Radiation ◽  
High Voltage ◽  
Transmission Lines ◽  
Urban Areas ◽  
National Standard ◽  
Residential Areas ◽  
High Voltage Transmission Line ◽  
Electricity Power ◽  
High Voltage Transmission ◽  
Controlling Measures

With the development of China's power industry, many cities had renovated, expanded electricity power network ,110、220 kV and above the high voltage overhead transmission lines all around the urban areas and residential areas. As the electromagnetic radiation of high-voltage transmission lines inevitability pollute on urban environment, according to the Investigation, monitoring and analysis of high voltage, based on national standard of electromagnetic radiation, this paper proposed the controlling measures and recommendations of electromagnetic radiation. Therefore, the research that the electromagnetic radiation impact on the environmental has a very high value and academic significance.

Numerical Analysis of the Corrosion of Buried Pipes near High Voltage Transmission Lines

2021 ◽  
Vol 35 (11) ◽  
pp. 1376-1377
Author(s):  
Dario Arango Angarita ◽  
Daniel Vargas Medina ◽  
Javier Araque Quijano
Keyword(s):  
High Voltage ◽  
Transmission Lines ◽  
Environmental Parameters ◽  
Corrosion Process ◽  
Physical Analysis ◽  
Buried Pipe ◽  
High Voltage Transmission Line ◽  
Analysis And Design ◽  
Typical Situation ◽  
High Voltage Transmission

We present the multi-physical analysis of the induction-corrosion process undergone by a buried pipe subject to electromagnetic induction from a nearby High Voltage Transmission Line (HVTL). The scenario analyzed models a typical situation found in Colombia by using realistic characteristics of the pipe, the HVTL, and environmental parameters such as soil resistivity. The results presented provide a quantitative view of the corrosion process and constitute a useful tool for the analysis and design of the increasingly common situation of pipelines running near HVTLs.

scholarly journals Characteristics of Rainfall in Wind Field of a Downburst and Its Effects on Motion of High-Voltage Transmission Line

2017 ◽  
Vol 2017 ◽  
pp. 1-11
Author(s):  
Chao Zhou ◽  
Li Li ◽  
Yibing Liu
Keyword(s):  
High Voltage ◽  
Transmission Lines ◽  
Unit Length ◽  
Transmission Tower ◽  
High Voltage Transmission Line ◽  
Vibration Model ◽  
Wind Velocities ◽  
Aerodynamic Property ◽  
High Voltage Transmission ◽  
Observation Results

Despite most weather-related failures of high-voltage transmission lines (HVTLs) being attributed to the downbursts accompanied by heavy rainfall, research works mainly focused on the behaviors of the high-voltage transmission tower-line structures under dry downburst winds. This paper thus presents a preliminary study to discuss the characteristics of rainfall in the downbursts and their effects on responses of HVTLs. Based on Vicroy model, the velocities of raindrops and their loads and pressure ratios of downburst wind-driven rain and only downburst wind on the surface of HVTLs per unit length are obtained. A downburst wind-rain induced vibration model is established to calculate the effects of the rainfall intensity and wind velocities on the motions of HVTLs. To verify the feasibility and accuracy of the model, the model is applied to evaluate responses of HVTLs with measured aerodynamic coefficients. The responses of HVTLs from the evaluated (the model) and the field observation results are compared. The results indicated that the model is feasible and can capture main features of the rainfall acting on HVTLs in the downbursts. Furthermore, the effects of rainfall cannot be neglected, and more attention should be paid to the wet downbursts and their effects on aerodynamic property of HVTLs.

A New High Voltage Transmission Lines Deicer Based on Vibrations Principle

2013 ◽  
Vol 772 ◽  
pp. 604-607
Author(s):  
Jing Nie
Keyword(s):  
High Voltage ◽  
Transmission Lines ◽  
Social Benefits ◽  
Lead Wire ◽  
Ice Melting ◽  
Paper Briefly ◽  
Basic Principles ◽  
High Voltage Transmission Line ◽  
Pros And Cons ◽  
High Voltage Transmission

In recent years, for the high voltage transmission lines suffered serious Icing lead wire dancing, break and tower collapsed, domestic and foreign strengthened the study of high-voltage overhead line deicing methods and put forward a variety of line deicing methods. This paper first introduced thermal ice-melting method, mechanical deicing method, natural deicing method and several common deicing methods and analyzed the pros and cons of various deicing program. Based on the analysis of deicing methods for the high voltage transmission lines, a new and simple high voltage transmission line deicer is brought forward. This paper briefly discussed the basic principles and advantages of the device, providing a new way of thinking for the high voltage transmission lines deicing and having a certain value and social benefits.

Research on Electromagnetic Energy Absorbed by Human Body in the Vicinity of High-Voltage Transmission Line

2014 ◽  
Vol 1022 ◽  
pp. 155-158
Author(s):  
Ao Wang ◽  
Zi Wei Chen ◽  
Rui Guan ◽  
Yu Hui Zhu ◽  
Lian Qing Zhao
Keyword(s):  
Electromagnetic Field ◽  
High Voltage ◽  
Transmission Lines ◽  
Field Energy ◽  
High Voltage Transmission Line ◽  
The People ◽  
High Voltage Transmission ◽  
Ac Transmission ◽  
Electromagnetic Field Energy ◽  
Uhv Transmission Lines

When the building is located near high-voltage transmission lines, the people working or living in the building will absorb a certain amount of electromagnetic field energy. When the limit is exceeded, it will have an impact on human health. We studied people in surrounding buildings of 500kV EHV AC transmission lines and 1000kV AC UHV transmission lines and discussed electromagnetic field energy they absorbed.

scholarly journals Influences of Cross-Sea High-Voltage Transmission Lines on Navigational Aids

CONVERTER ◽  
2021 ◽  
pp. 112-118
Author(s):  
Qinglong Hao, Jie Zhang, Xueyuan Zhu
Keyword(s):  
Electromagnetic Radiation ◽  
Electric Power ◽  
High Voltage ◽  
Transmission Lines ◽  
Electric Power Industry ◽  
Control Measures ◽  
Interference Phenomenon ◽  
Safety Control ◽  
Ship Navigation ◽  
High Voltage Transmission

With the development of high-voltage electric power industry and the construction of cross-sea transmission projects in coastal ports, the interference of cross-sea high-voltage transmission lines on the performance of ship navigation aids gains considerable attention.  The navigation safety control measures for ships crossing the waters of high-voltage transmission lines are proposed to study the navigational safety of the waters for the construction of high-voltage transmission lines across the sea. Conclusions with certain reliability are also drawn based on the analysis of the reasons and mechanisms of the interference phenomenon for the reference of maritime and scientific researchers. The images or signals of interference under the electromagnetic radiation from maritime shore-based radars, shipborne radars, shipborne VHF and GPS equipment through high-voltage transmission lines are obtained through on-site and actual ship testing.

scholarly journals A Time-Domain Explicit Integration Algorithm for Fast Overvoltage Computation of High-Voltage Transmission Line

2020 ◽  
Vol 2020 ◽  
pp. 1-11
Author(s):  
Lei Zhang ◽  
Zhongyi Xu ◽  
Jing Ye
Keyword(s):  
Transmission Line ◽  
High Voltage ◽  
Transmission Lines ◽  
Multiple Time ◽  
Explicit Integration ◽  
Time Step ◽  
Integration Algorithm ◽  
High Voltage Transmission Line ◽  
High Voltage Transmission ◽  
Explicit Integration Algorithm

This paper presents a multiple time-step solver based on a time-domain explicit integration algorithm for improving the computational speed of high-voltage transmission line electromagnetic transient (EMT) simulation. For weakly rigid EMT models of high-voltage transmission lines, the previous precise Runge-Kutta integration method with a small time step is adopted; for strongly rigid nonlinear EMT models of high-voltage transmission lines, a an improved precise integration method using a large time step is used for the solver of EMT simulation. Practical simulations for overvoltages of high-voltage transmission line show that multiple time-step EMT solver can be applied to different cases of EMT simulation for transmission line.

scholarly journals INFLUENCE ESTIMATION OF ASYMMETRY EXTRA HIGH VOLTAGE TRANSMISSION LINE ON DETERMINATION OF COMPENSATING REACTOR PARAMETERS

2020 ◽  
Vol 2020 (57) ◽  
pp. 15-25
Author(s):  
Vladislav Kuchanskyy ◽  
◽  
Denys Malakhatka ◽  
Keyword(s):  
Transmission Line ◽  
High Voltage ◽  
Transmission Lines ◽  
Single Phase ◽  
Power Transmission ◽  
Power Transmission Lines ◽  
High Voltage Transmission Line ◽  
Longitudinal Asymmetry ◽  
High Voltage Transmission ◽  
Extra High Voltage

The article shows the urgency of the problem of studying resonant processes in extra high voltage power lines. The research of processes in extra high voltage power transmission lines is carried out to develop and implement measures to prevent overvoltages. Resonant overvoltages arising because of open phase modes of operation of the extra high voltage transmission line are considered. The paper shows the influence of the levels of longitudinal asymmetry on the calculation of the resistances of compensating reactors to reduce the values of overvoltages in the pause of single-phase automatic reclose. The degree of influence of the wire transposition scheme on the choice of the resistance of the compensation reactor and on the values of resonant overvoltages in the cycle of single-phase automatic reclose is considered. Estimation of asymmetry coefficients for different transposition schemes is performed. To select the resistance of the compensation reactor, the data of the existing high-voltage transmission lines of 750 kV were taken. Recommendations for the implementation of measures to prevent and limit resonant overvoltages are given. The current theoretical and practical problems of operation of the extra high voltage power line are considered and the ways of further research are shown. References 14, figures 5, tables 2.

scholarly journals Research on Recognition of Electricity Fittings in High Voltage Transmission Lines

2021 ◽  
Vol 257 ◽  
pp. 01074
Author(s):  
He-dong Lei ◽  
Qing-feng Gao ◽  
Dong-rui Lv
Keyword(s):  
High Voltage ◽  
Transmission Lines ◽  
Deep Neural Network ◽  
Power Transmission ◽  
Image Features ◽  
Power Transmission Lines ◽  
High Voltage Transmission Line ◽  
High Voltage Transmission ◽  
Inspection Robots ◽  
Identification Model

On the basis of analyzing the structure of common power fittings in high-voltage transmission lines and their image features, combined with the DNN deep neural network in machine learning, we proposed a model suitable for high-voltage transmission line inspection robots to identify the types of electric power fittings on the transmission lines. And design a fast ROI generation method suitable for recognizing fittings on power transmission lines. Then we verify the feasibility and rationality of the fitting identification model.

scholarly journals Gas SF 6 (Sulfur Hexa Fluorida) Sebagai Pemadam Busur Api Pada Pemutus Tenaga (PMT) Di Saluran Transmisi Tegangan Tinggi

METANA ◽  
2018 ◽  
Vol 13 (1) ◽  
pp. 1
Author(s):  
Iman Setiono
Keyword(s):  
Transmission Line ◽  
High Voltage ◽  
Transmission Lines ◽  
Circuit Breaker ◽  
Electricity Distribution ◽  
Power Station ◽  
Power Circuit ◽  
High Voltage Transmission Line ◽  
High Voltage Transmission ◽  
Extra High Voltage

Keberadaan Pemutus Tenaga (PMT) pada saluran transmisi mutlak diperlukan, karena untuk menyalurkan dan memutuskan sistem penyaluran tenaga listrik dari pusat pembangkitan sampai ke konsumen harus bisa di atur dengan menggunakan PMT ini. PMT adalah sebuah alat yang berfungsi untuk memutus-hubungkan aliraan listrik yang melalui saluran transmisi tegangan tinggi. Karena faktor tegangan tinggi , yaitu untuk Saluran Udara Tegangan Tinggi (SUTT)  adalah 150 KV dan untuk Saluran Udara Tegangan Extra Tinggi (SUTET) adalah 500 KV, maka setiap kali menghubungkan dan memutuskan kontak di dalam PMT  gesekan pada kontak-kontak tersebut yang terbuat dari logam. Akibat dari gesekan ini akan muncul bunga api yang sangat berbahaya dapat menimbulkan kebakaran dan kerusakan peralatan. Untuk memadamkan bunga api ini , maka di gunakan gas SF6 yang bersifat isolator , sehingga bunga api padam dan dapat mencegah terjadinya kebakaran dan kerusakan peralatan.  Gas SF6 (Hexa Fluoride Sulfur) As Fire Extinguisher On Power Breaker (PMT) On High Voltage Transmission Channel The existence of Power Circuit breaker (PMT) in the transmission line is absolutely necessary, because to channel and decide the system of electricity distribution from the power station  to the consumer must be managed by using this PMT. PMT is a device that serves to break-up the electricity supply through high voltage transmission lines. Due to the high voltage factor, that is for High Voltage transmission line (SUTT) is 150 KV and for Extra High Voltage Transmission line (SUTET) is 500 KV, then every time connect and disconnect the contact inside the friction PMT on those contacts made from metal. As a result of this friction will appear very dangerous sparks can cause fire and equipment damage. To extinguish this spark, then in use SF6 gas that is an isolator, so the sparks out and can prevent the occurrence of fire and equipment damage.

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