High Voltage Overhead Power Lines - Spyrou Kyprianou Street, Geroskipou, Paphos

 

This report was prepared by the Electromagnetics and Novel Applications Laboratory (Electromagnetics and Novel Applications Lab) of the University of Cyprus within the framework of measuring and assessing the magnetic and electric field levels by AC power systems at the location of interest:

·         Overhead Power Line 17 in direct proximity to Residence at Spyrou Kyprianou Street, Geroskipou, Paphos on the 18/11/2016 from 10:00 am until 12:00 pm.

The measurements were performed according to the measurement procedures with regard to public exposure (IEC 62110:2009). More specifically, the largest electric and magnetic field level is found under conductors at the point on the span where the conductors are closest to the ground. Therefore, the position where the field level is the maximum was found by first measuring at 1.0 m above the ground along the path parallel to the overhead line under conductors where possible at appropriate intervals (longitudinal profile), in the range of 5 Hz – 32 kHz using the EFA-300 Isotropic Field Analyser. Then, in order to discover whether another peak occurs, measurements were performed at 1.0 m above the ground along the path perpendicular to the overhead line, at the point of the longitudinal profile maximum (lateral profile).

In addition, three-point measurements were performed to assess the fields at the position of interest (assuming non-uniform fields). The measurements were performed at the position of interest at three heights 0.5 m, 1 m and 1.5 m. above the ground or floor level of the building. Beside power equipment or in a building, measurement was performed at a horizontal distance of 0.2 m and 2 m from its surface or boundary wall.

The recorded measurements were compared to the reference levels described in the Council Recommendation of 12th July 1999 on the limitation of exposure of the general public to electromagnetic fields (0 Hz to 300 GHz), 1999/519/EC. Respect to the recommended reference levels will ensure respect to the basic restrictions. The reference levels of exposure provided in 1999/519/EC are in accordance to the Cypriot Legislation.

The magnetic and electric field measurements performed at the position of interest were below the recommended reference levels of exposure provided in 1999/519/EC.

The highest electric and magnetic field values measured along the longitudinal and lateral profiles of the overhead power lines and at the location of interest are summarized in the following Tables.

 

Starting Point

Measurement height (m)

Magnetic field level (µT)

Frequency (Hz)

ICNIRP General Public (%)

Distance from centre point (m)

-2

1

0.36

51

0.37

-1

1

0.36

50

0.36

0

1

0.45

50

0.45

1

1

0.38

51

0.39

2

1

0.43

50

0.43

Starting Point

Measurement height (m)

Electric field level (V/m)

Frequency (Hz)

ICNIRP General Public (%)

Distance from centre point (m)

-2

1

257.89

51

5.26

-1

1

258.23

50

5.16

0

1

274.13

51

5.59

1

1

282.86

50

5.66

2

1

287.48

50

5.75

Magnetic field level measurements overhead power lines, longitudinal profile.

 

Starting Point

Measurement height (m)

Magnetic field level (µT)

Frequency (Hz)

ICNIRP General Public (%)

Distance from centre point (m)

-2

1

0.39

51

0.39

-1

1

0.38

51

0.39

0

1

0.45

50

0.45

1

1

0.39

50

0.39

2

1

0.46

46

0.42

Starting Point

Measurement height (m)

Electric field level (V/m)

Frequency (Hz)

ICNIRP General Public (%)

Distance from centre point (m)

-2

1

264.55

50

5.29

-1

1

266.93

50

5.34

0

1

274.13

51

5.59

1

1

271.34

50

5.43

2

1

304.50

51

6.21

Magnetic field level measurements overhead power lines, lateral profile.

 

Point No.

Measurement height (m)

Magnetic field level (µT)

Frequency (Hz)

ICNIRP General Public (%)

 

0.3

0.31

7

0.04

1 (outdoor)

1

0.12

7

0.02

 

1.5

0.20

5

0.01

 

0.3

0.08

5

0.00

2 (indoor)

1

0.13

5

0.01

 

1.5

0.16

5

0.01

Point No.

Measurement height (m)

Electric field level (V/m)

Frequency (Hz)

ICNIRP General Public (%)

1 (outdoor)

1

1.01

58

0.02

2 (indoor)

1

0.70

40

0.01

Point measurements at the location of interest (residential plot).