Electric field mitigation under extra high voltage power lines

Radwan, R.M.; Mahdy, A.M.; Abdel‐Salam, M.; Samy, Mohamed

doi:10.1109/tdei.2013.6451341

Cited by 38 publications

(12 citation statements)

References 18 publications

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“…Obviously, the calculation accuracy of the simplified model is hardly satisfactory. Thus, based on the catenary equation of overhead conductors, the threedimensional electric field calculation models are established in [13]- [19]. Furthermore, the unequal suspension height and uneven span are taken into consideration in [20]- [22].…”

Section: Introductionmentioning

confidence: 99%

Improved Three-Dimension Mathematical Model for Voltage Inversion of AC Overhead Transmission Lines

Xiao

Zhao

et al. 2019

IEEE Access

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The voltages on the AC overhead transmission lines (OTLs) can be calculated inversely based on the measured electric field around the lines, which will much contribute to the non-contact condition monitoring of OTLs. To more realistically simulate the actual operating state of OTLs in the wild, a refined catenary equation of OTL with consideration of the vertical suspension and horizontal deflection is established, and the according improved three-dimensional electric field mathematical model are proposed. Furthermore, the OTLs' voltages are calculated based on an improved optimization algorithm that combines particle swarm algorithm and genetic algorithm. Some simulation and experiment cases by setting different measurement errors and wind speeds are employed to verify the improving effect of the proposed model. The analysis results shown that the three-phase maximum amplitude error is 6.48% and maximum phase error is 6.26 • when the electric field measuring error is as high as 20% (beyond the normal level); on the other hand, the maximum amplitude error and phase error are 2.54% and 0.96 • respectively when the wind speed is set to the strong wind of 15m/s. The results demonstrate the accuracy and robustness of the proposed model. INDEX TERMS Overhead transmission lines (OTLs), three-dimension electric field mathematical model, accuracy of inversion, non-contact condition monitoring.

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Section: Introductionmentioning

confidence: 99%

Improved Three-Dimension Mathematical Model for Voltage Inversion of AC Overhead Transmission Lines

Xiao

Zhao

et al. 2019

IEEE Access

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“…The EMF below the transmission line conductors is high for higher operating voltages. The analysis and reduction of electric fields at ground level is the most direct objective of efforts to minimize the field effects of EHVAC transmission lines [5]. In fact, most electric field effects occur close to ground level and are function of magnitude of the still electric field at two meters above ground [6].…”

Section: Introductionmentioning

confidence: 99%

Optimal Design of 1200 kV UHV AC Transmission Lines in India using Newly Developed Standalone MATLAB GUI

Vyas¹,

Jamnani²

2019

IJRTE

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Owing to tremendous growth in requirement of electrical power in the country, technological advancement in transmission systems is essential for transmission of bulk amount of power over long distances. Deciding value of corridor width for transmission lines are greatly influenced by magnitudes of electric and magnetic fields along its length. The precise evaluation of the electromagnetic fields and effects of corona like Radio Interference and Audible Noise generated by overhead transmission lines are thus of greater interest. This paper presents implementation of a novel GUI based technique to compute the fields generated by power transmission lines using three dimensional techniques. Actual case of Ultra High Voltage AC (UHVAC) line is considered for study. Transmission lines are analyzed by using newly developed software that facilitates computation and plotting of electromagnetic fields and corona effects in 3D coordinates. MATLAB is used as platform for development of GUI based software to analyze the fields along the entire length of transmission lines under study. It uses concept of charge simulation method (CSM) along with most fundamental Maxwell’s potential coefficient theory and 3D integration techniques.

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“…An efficient method to reduce the field consists of using grounded shield wires under transmission lines [2]. Shield wires of single, double and triple configuration have been used for the analysis [3], [4]. Safety limit violations of magnetic fields for various transmission line configurations, at various Surge Impedance Loading (SIL) levels is necessary to set our safety level for different conditions.…”

Section: Introductionmentioning

confidence: 99%

Calculation of electric and magnetic field safety limits under UHV AC transmission lines

Baishya

Kishore

Bhuyan³

2014

2014 Eighteenth National Power Systems Conference (NPSC)

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With the ever burgeoning population rate and rapid industrialisation, the demand for power has increased manifold. Ultra High Voltage AC transmission is one of the measures to arrest this increasing energy demands. This paper evaluates the safety limits for electric and magnetic fields generated around the UHV AC transmission lines. Shielding methods are also evaluated to reduce the electric field at ground level. Moreover surface current density for human beings has also been calculated.

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Electric field mitigation under extra high voltage power lines

Cited by 38 publications

References 18 publications

Improved Three-Dimension Mathematical Model for Voltage Inversion of AC Overhead Transmission Lines

Improved Three-Dimension Mathematical Model for Voltage Inversion of AC Overhead Transmission Lines

Optimal Design of 1200 kV UHV AC Transmission Lines in India using Newly Developed Standalone MATLAB GUI

Calculation of electric and magnetic field safety limits under UHV AC transmission lines

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