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# Calculation of electro magnetic field (EMF) around T&D overhead lines

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## Electro-magnetic field (EMF)

Calculation of Electro-Magnetic Field EMF) is one of the factors which must be considered during the design process, especially for high voltage transmission lines. It is common that based on those calculations, the designer or planner may determine the Right of Row (ROW) of the power line.

Moreover, the results of simulations prepared in the designing phase can indicate the impact on the environment which ensures that the proceeding solution will not be dangerous for the people and surrounding nature.

It is matter-of-fact as in the worst case the wrong decision can even block the realization of investment. Because of the alleged reasons, it is important to take into consideration EMF calculations in order to utilize the best solution concerning both economic and environmental aspects.

The presented software states a tool which allows conducting calculations of EMF around transmission and distribution overhead lines. The results of calculations are presented on graphical charts as EMF distribution.

It is allowed to calculate EMF for 1 circuit line as well as two circuit lines. In each of the cases, ground wires may be considered. Moreover using different cases it is possible to mix and create major examples of power lines where two independent lines interact with each other.

Electro-Magnetic Field is calculated in accordance with the analytical approach described in EPRI Red Book “Transmission Line Reference Book”. The accuracy of these EMF calculations was checked with other commercial software.

### Passive loop wire (PLW) and audible noise (AN) distribution

Apart from the EMF calculations there are also added other extra functionalities:

Model of Passive Loop Wire (PLW) intended for mitigation of magnetic field purposes. It provides a possibility to simulate the influence of the passive loop which is suspended below live conductors in span. Magnetic Field is mitigated by means of induced current which flows through the closed-loop.

Based on the literature this solution was tested in some real applications so it can be considered as a magnetic field limiting measure.

Audible Noise (AN) distribution around transmission lines. The calculation of Audible Noise is strictly connected with EMF because the level of Audible Noise is another factor that influences on proper line design process. This program allows making calculations in accordance with three different methods determined by three independent authors. EPRI, BPA, and PN-N-01339:2000 (polish standard).

Results of calculations are presented as a cross-section distribution where different curves are depicted and represent different values of indicators.

In combination with EMF calculations designer receives full range of information about environmental impact on surrounding of the transmission line as well as it may indicate building constraints.

 Software: Calculation of electro magnetic field (EMF) around transmission and distribution overhead lines Version: v.01 (includes english and polish version plus user manual in PDF) Developer: Mr. Michal Liszka (liszka.mliszk AT GMAIL DOT-COM) Size: 2.20 MB (.zip) Price: Free Download: Right here | Video Courses | Membership | Download Updates

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1. Said MASHATE
Oct 14, 2020

THANKS

2. David Sheldon
Jul 30, 2018

cannot open the file format or extension is not valid?? . xlsm

3. AQIL NOOR KHAN
Jul 10, 2018

Calculation of electro magnetic field (EMF) around transmission and distribution overhead lines

The information in the subject is very imperative to kept in mind during the selection of Right Of Way ( ROW) of a new HV Transmission Line passing nearby the residential , Industrial , Agricultural areas to cater the environmental issues.

4. M.HUSSAIN BAIG
Nov 28, 2017

Very good helps me a lot

txs

5. NITIN
Mar 16, 2017

NICE TOPIC…GREAT BEST EXCEL TOOL TILL DATE

THANKS